ffmpeg/Changelog

Entries are sorted chronologically from oldest to youngest within each release,
releases are sorted from youngest to oldest.


version 5.1.6:
 avcodec/snow: Fix off by 1 error in run_buffer
 avcodec/utils: apply the same alignment to YUV410 as we do to YUV420 for snow
 swsresample/swresample: error out on invalid layouts
 Update for 5.1.6
 avdevice/dshow: Don't skip audio devices if no video device is present
 avcodec/cfhdenc: Height of 16 is not supported
 avcodec/cfhdenc: Allocate more space
 avcodec/vaapi_encode: Check hwctx
 avcodec/proresdec: Consider negative bits left
 avcodec/alsdec: Clear shift_value
 avcodec/hevc/hevcdec: Do not allow slices to depend on failed slices
 avutil/slicethread: Check pthread_*_init() for failure
 avutil/frame: Check log2_crop_align
 avutil/buffer: Check ff_mutex_init() for failure
 avformat/xmv: Check this_packet_size
 avformat/ty: rec_size seems to only need 32bit
 avformat/tty: Check avio_size()
 avformat/siff: Basic pkt_size check
 avformat/sauce: Check avio_size() for failure
 avformat/sapdec: Check ffurl_get_file_handle() for error
 avformat/nsvdec: Check asize for PCM
 avformat/mp3dec: Check header_filesize
 avformat/mp3dec; Check for avio_size() failure
 avformat/mov: Use 64bit for str_size
 avformat/mm: Check length
 avformat/hnm: Check *chunk_size
 avformat/hlsenc: Check ret
 avformat/bintext: Check avio_size() return
 avformat/asfdec_o: Check size of index object
 avfilter/vf_scale: Check ff_scale_adjust_dimensions() for failure
 avfilter/scale_eval: Use 64bit, check values in ff_scale_adjust_dimensions()
 avfilter/vf_lut3d: Check av_scanf()
 avfilter/vf_elbg: Use unsigned for shifting into the top bit
 avfilter/vf_deshake_opencl: Ensure that the first iteration initializes the best variables
 swscale/output: Fix integer overflows in yuv2rgba64_X_c_template
 avformat/mxfdec: Reorder elements of expression in bisect loop
 avutil/timecode: Use a 64bit framenum internally
 avcodec/pnmdec: Use 64bit for input size check
 avcodec/mpeg12enc: Use av_rescale() in vbv_buffer_size computation
 avcodec/utvideoenc: Use unsigned shift to build flags
 avcodec/vc2enc: Fix overflows with storing large values
 avcodec/mpegvideo_enc: Do not duplicate pictures on shifting
 avdevice/dshow_capture: Fix error handling in ff_dshow_##prefix##_Create()
 avcodec/tiff: Check value on positive signed targets
 avfilter/vf_convolution_opencl: Assert that the filter name is one of the filters
 avfilter/vf_bm3d: Dont round MSE2SSE to an integer
 avdevice/dshow: Remove NULL check on pin
 avdevice/dshow: check ff_dshow_pin_ConnectionMediaType() for failure
 avdevice/dshow: Check device_filter_unique_name before use
 avdevice/dshow: Cleanup also on av_log case
 avdevice/dshow_filter: Use wcscpy_s()
 avcodec/flac_parser: Assert that we do not overrun the link_penalty array
 avcodec/pixlet: Simplify pfx computation
 avcodec/motion_est: Fix score squaring overflow
 avcodec/loco: Check loco_get_rice() for failure
 avcodec/loco: check get_ur_golomb_jpegls() for failure
 avcodec/imm4: check cbphi for error
 avcodec/iff: Use signed count
 avcodec/golomb: Assert that k is in the supported range for get_ur/sr_golomb()
 avcodec/golomb: Document return for get_ur_golomb_jpegls() and get_sr_golomb_flac()
 avcodec/dxv: Fix type in get_opcodes()
 avcodec/cri: Check length
 avcodec/xsubdec: Check parse_timecode()
 avutil/imgutils: av_image_check_size2() ensure width and height fit in 32bit
 doc/examples/mux: remove nop
 avcodec/proresenc_kostya: use unsigned alpha for rotation
 avformat/rtpenc_rfc4175: Use 64bit in computation if copy_offset
 avformat/rtmppkt: Simplify and deobfuscate amf_tag_skip() slightly
 avformat/rmdec: use 64bit for audio_framesize checks
 avutil/wchar_filename: Correct sizeof
 avutil/hwcontext_d3d11va: correct sizeof IDirect3DSurface9
 avutil/hwcontext_d3d11va: Free AVD3D11FrameDescriptor on error
 avutil/hwcontext_d3d11va: correct sizeof AVD3D11FrameDescriptor
 doc/examples/vaapi_encode: Try to check fwrite() for failure
 avformat/tls_schannel: Initialize ret
 avformat/subfile: Assert that whence is a known case
 avformat/subfile: Merge if into switch()
 avformat/rtsp: Check that lower transport is handled in one of the if()
 avformat/rtsp: initialize reply1
 avformat/rtsp: use < 0 for error check
 avformat/rtpenc_vc2hq: Check sizes
 avfilter/af_aderivative: Free out on error
 swscale/swscale: Use ptrdiff_t for linesize computations
 avfilter/af_pan: check nb_output_channels before use
 cbs_av1: Reject thirty-two zero bits in uvlc code
 avfilter/af_mcompand: compute half frequency in double
 avfilter/af_channelsplit: Assert that av_channel_layout_channel_from_index() succeeds
 avfilter/af_aresample: Cleanup on av_channel_layout_copy() failure
 tools/coverity: Phase 1 study of anti-halicogenic for coverity av_rescale()
 avfilter/vf_avgblur: Check plane instead of AVFrame
 avfilter/drawutils: Fix depthb computation
 avformat/rdt: Check pkt_len
 avformat/mpeg: Check len in mpegps_probe()
 avdevice/dshow: Check ICaptureGraphBuilder2_SetFiltergraph() for failure
 avcodec/mfenc: check IMFSample_ConvertToContiguousBuffer() for failure
 avcodec/vc1_loopfilter: Factor duplicate code in vc1_b_h_intfi_loop_filter()
 avformat/img2dec: assert no pipe on ts_from_file
 avcodec/cbs_jpeg: Try to move the read entity to one side in a test
 avformat/mov: Check edit list for overflow
 fftools/ffmpeg: Check read() for failure
 swscale/output: Avoid undefined overflow in yuv2rgb_write_full()
 swscale/output: alpha can become negative after scaling, use multiply
 avcodec/targaenc: Allocate space for the palette
 avcodec/r210enc: Use av_rescale for bitrate
 avcodec/jfdctint_template: Fewer integer anomalies
 avcodec/snowenc: MV limits due to mv_penalty table size
 avformat/mxfdec: Check container_ul->desc before use
 MAINTAINERS: Update the entries for the release maintainer for FFmpeg

version 5.1.5:
 doc/developer: Provide information about git send-email and gmail
 avfilter/vf_rotate: Check ff_draw_init2() return value
 avformat/mov: Use int64_t in intermediate for corrected_dts
 avformat/mov: Use 64bit in intermediate for current_dts
 avformat/matroskadec: Assert that num_levels is non negative
 avformat/libzmq: Check av_strstart()
 avformat/img2dec: Little JFIF / Exif cleanup
 avformat/img2dec: Move DQT after unrelated if()
 avdevice/xcbgrab: Check sscanf() return
 fftools/cmdutils: Add protective () to FLAGS
 avformat/sdp: Check before appending ","
 avcodec/ilbcdec: Remove dead code
 avcodec/vp8: Check cond init
 avcodec/vp8: Check mutex init
 avcodec/pcm-dvdenc: 64bit pkt-size
 avcodec/notchlc: Check init_get_bits8() for failure
 avcodec/tests/dct: Use 64bit in intermediate for error computation
 avcodec/scpr3: Check add_dec() for failure
 avcodec/rv34: assert that size is not 0 in rv34_gen_vlc_ext()
 avcodec/wavpackenc: Use unsigned for potential 31bit shift
 avcodec/tests/jpeg2000dwt: Use 64bit in comparission
 avcodec/tests/jpeg2000dwt: Use 64bit in err2 computation
 avformat/fwse: Remove always false expression
 avcodec/sga: Make it clear that the return is intentionally not checked
 avformat/asfdec_f: Use 64bit for preroll computation
 avformat/argo_asf: Use 64bit in offset intermediate
 avformat/ape: Use 64bit for final frame size
 avdevice/pulse_audio_enc: Use av_rescale() to avoid integer overflow
 avcodec/tiff: Assert init_get_bits8() success in unpack_gray()
 avcodec/tiff: Assert init_get_bits8() success in horizontal_fill()
 swscale/yuv2rgb: Use 64bit for brightness computation
 swscale/x86/swscale: use a clearer name for INPUT_PLANER_RGB_A_FUNC_CASE
 avutil/tests/opt: Check av_set_options_string() for failure
 avutil/tests/dict: Check av_dict_set() before get for failure
 avdevice/dshow: fix badly indented line
 avformat/demux: resurrect dead stores
 avcodec/mscc & mwsc: Check loop counts before use
 avcodec/mpegvideo_enc: Fix potential overflow in RD
 avcodec/mpeg4videodec: assert impossible wrap points
 avcodec/mpeg12dec: Use 64bit in bit computation
 avcodec/vble: Check av_image_get_buffer_size() for failure
 avcodec/vp3: Replace check by assert
 avcodec/jpeg2000dec: remove ST=3 case
 avcodec/qsvdec: Check av_image_get_buffer_size() for failure
 avcodec/exr: Fix preview overflow
 avcodec/fmvc: remove dead assignment
 avcodec/h264_slice: Remove dead sps check
 avcodec/lpc: copy levenson coeffs only when they have been computed
 avutil/tests/base64: Check with too short output array
 libavutil/base64: Try not to write over the array end
 avcodec/cbs_av1: Avoid shift overflow
 fftools/ffplay: Check return of swr_alloc_set_opts2()
 tools/opt_common: Check for malloc failure
 doc/examples/demux_decode: Simplify loop
 avformat/concatdec: Check file
 avcodec/mpegvideo_enc: Fix 1 line and one column images
 swscale/output: Fix integer overflow in yuv2rgba64_full_1_c_template()
 swscale/output: Fix integer overflow in yuv2rgba64_1_c_template
 avcodec/avs3_parser: assert the return value of init_get_bits()
 avcodec/avs2_parser: Assert init_get_bits8() success with const size 15
 avformat/mxfdec: Check body_offset
 avformat/kvag: Check sample_rate
 avcodec/ac3_parser: Check init_get_bits8() for failure
 avcodec/pngdec: Check last AVFrame before deref
 avcodec/hevcdec: Check ref frame
 doc/examples/vaapi_transcode: Simplify loop
 avfilter/vf_thumbnail_cuda: Set ret before checking it
 avfilter/signature_lookup: Dont copy uninitialized stuff around
 avfilter/signature_lookup: Fix 2 differences to the refernce SW
 (origin/release/5.1, github/release/5.1) lavc/vp9: reset segmentation fields when segmentation isn't enabled
 configure: enable ffnvcodec, nvenc, nvdec for FreeBSD
 avcodec/x86/vp3dsp_init: Set correct function pointer, fix crash
 avutil/ppc/cpu: Also use the machdep.altivec sysctl on NetBSD
 lavd/v4l2: Use proper field type for second parameter of ioctl() with BSD's
 Update for 5.1.5
 fate/subtitles: Ignore line endings for sub-scc test
 avformat/mxfdec: Check index_edit_rate
 swscale/utils: Fix xInc overflow
 avformat/isom: Uninit layout in ff_mp4_read_dec_config_descr()
 avcodec/exr: Dont use 64bits to hold 6bits
 avcodec/exr: Check for remaining bits in huf_unpack_enc_table()
 avformat/mpegts: Reset local nb_prg on add_program() failure
 avformat/aiffdec: Check for previously set channels
 avformat/mxfdec: Make edit_unit_byte_count unsigned
 avformat/movenc: Check that cts fits in 32bit
 avformat/mxfdec: Check first case of offset_temp computation for overflow
 avfilter/vf_signature: Dont crash on no frames
 avformat/westwood_vqa: Fix 2g packets
 avformat/matroskadec: Check timescale
 avformat/wavdec: satuarte next_tag_ofs, data_end
 avformat/sbgdec: Check for negative duration
 avformat/rpl: Use 64bit for total_audio_size and check it
 avformat/timecode: use 64bit for intermediate for rounding in fps_from_frame_rate()
 avformat/mov: use 64bit for intermediate for rounding
 avformat/jacosubdec: Use 64bit for abs
 avformat/concatdec: Check user_duration sum
 avcodec/truemotion1: Height not being a multiple of 4 is unsupported
 avcodec/hcadec: do not set hfr_group_count to invalid values
 avformat/concatdec: clip outpoint - inpoint overflow in get_best_effort_duration()
 avformat/jacosubdec: clarify code
 avformat/cafdec: Check that data chunk end fits within 64bit
 avformat/iff: Saturate avio_tell() + 12
 avformat/dxa: Adjust order of operations around block align
 avformat/cafdec: dont seek beyond 64bit
 avformat/id3v2: read_uslt() check for the amount read
 avcodec/proresenc_kostya: Remove bug similarity text
 avcodec/vorbisdec: Check remaining data in vorbis_residue_decode_internal()
 avformat/concatdec: Check in and outpoints to be to produce a positive representable duration
 libswscale/utils: Fix bayer to yuvj
 swscale/swscale: Check srcSliceH for bayer
 swscale/utils: Allocate more dithererror
 avcodec/indeo3: Round dimensions up in allocate_frame_buffers()
 avutil/rational: Document what is to be expected from av_d2q() of doubles representing rational numbers
 avfilter/signature_lookup: Do not dereference NULL pointers after malloc failure
 avfilter/signature_lookup: dont leave uncleared pointers in sll_free()
 avcodec/mpegvideo_enc: Use ptrdiff_t for stride
 libavformat/hlsenc.c: Populate OTI using AAC profile in write_codec_attr.
 avcodec/mpegvideo_enc: Dont copy beyond the image
 avfilter/vf_minterpolate: Check pts before division
 avformat/flacdec: Avoid double AVERRORS
 avfilter/vf_vidstabdetect: Avoid double AVERRORS
 avfilter/vf_swaprect: round coordinates down
 avfilter/vf_swaprect: Use height for vertical variables
 avfilter/vf_swaprect: assert that rectangles are within memory
 avfilter/af_alimiter: Check nextpos before use
 avfilter/f_reverse: Apply PTS compensation only when pts is available
 avfilter/af_stereowiden: Check length
 avfilter/vf_weave: Fix odd height handling
 avfilter/vf_gradfun: Do not overread last line
 avfilter/avf_showspectrum: fix off by 1 error
 avformat/mov: do not set sign bit for chunk_offsets
 avcodec/jpeglsdec: Check Jpeg-LS LSE
 configure: Enable section_data_rel_ro for FreeBSD and NetBSD aarch64 / arm
 avcodec/av1dec: Fix resolving zero divisor
 avformat/mov: Ignore duplicate ftyp
 avformat/mov: Fix integer overflow in mov_read_packet().
 avformat/mov: Check if a key is longer than the atom containing it
 avfilter/buffersrc: fix overriding unknown channel layouts with negotiated one
 avfilter/af_channelmap: disallow channel index 64
 avfilter/af_channelmap: fix mapping if in_channel was a string but out_channel was not specified
 avfilter/af_channelmap: fix error message if FL source channel was missing
 avcodec/nvdec: reset bitstream_len/nb_slices when resetting bitstream pointer
 avformat/mov: don't abort on duplicate Mastering Display Metadata boxes
 fftools/ffplay: use correct buffersink channel layout parameters
 swresample/resample: fix rounding errors with filter_size=1 and phase_shift=0
 avformat/mxfdec: remove resolve_strong_ref usage with AnyType
 avformat/libsrt: use SRT_EPOLL_IN for waiting for an incoming connection
 avformat/mxfdec: do not use AnyType when resolving Descriptors and MultipleDescriptors
 avformat/mxfdec: move resolving Descriptors to the multi descriptor resolve function
 avcodec/av1dec: fix matrix coefficients exposed by codec context
 avformat/mov_chan: never override number of channels based on chan atom
 avformat/mov_chan: do not assume channels are in native order
 avcodec/nvdec: don't free NVDECContext->bitstream
 fftools/ffmpeg_enc: apply -top to individual encoded frames
 fftools/ffprobe: support 2D arrays in print_list_fmt()

version 5.1.4:
 avcodec/4xm: Check for cfrm exhaustion
 avformat/mov: Disallow FTYP after streams
 doc/html: fix styling issue with Texinfo 7.0
 doc/html: support texinfo 7.0
 avfilter/buffersink: fix order of operation with = and <0
 tools/target_dec_fuzzer: Adjust threshold for CSCD
 avcodec/dovi_rpu: Use 64 bit in get_us/se_coeff()
 avformat/mov: Check that is_still_picture_avif has no trak based streams
 avformat/matroskadec: Fix declaration-after-statement warnings
 avformat/rtsp: Use rtsp_st->stream_index
 avcodec/jpeg2000dec: Check image offset
 avformat/mxfdec: Check klv offset
 libavutil/ppc/cpu.c: check that AT_HWCAP2 is defined
 avcodec/h2645_parse: Avoid EAGAIN
 avcodec/xvididct: Make c* unsigned to avoid undefined overflows
 avformat/tmv: Check video chunk size
 avcodec/h264_parser: saturate dts a bit
 avformat/asfdec_f: Saturate presentation time in marker
 avformat/xwma: sanity check bits_per_coded_sample
 avformat/matroskadec: Check prebuffered_ns for overflow
 avformat/wavdec: Check left avio_tell for overflow
 avformat/tta: Better totalframes check
 avformat/rpl: Check for number_of_chunks overflow
 avformat/mov: compute absolute dts difference without overflow in mov_find_next_sample()
 avformat/jacosubdec: Check timeres
 avformat/jacosubdec: avoid signed integer overflows in get_shift()
 avformat/jacosubdec: Factorize code in get_shift() a bit
 avformat/sbgdec: Check for negative duration or un-representable end pts
 avcodec/escape124: Do not return random numbers
 avcodec/apedec: Fix an integer overflow in predictor_update_filter()
 tools/target_dec_fuzzer: Adjust wmapro threshold
 avformat/avs: Check if return code is representable
 avcodec/lcldec: Make PNG filter addressing match the code afterwards
 avformat/westwood_vqa: Check chunk size
 avformat/sbgdec: Check for period overflow
 avformat/concatdec: Check in/outpoint for overflow
 avformat/mxfdec: Remove this_partition
 avcodec/xvididct: Fix integer overflow in idct_row()
 avcodec/celp_math: avoid overflow in shift
 tools/target_dec_fuzzer: Adjust threshold for rtv1
 avformat/hls: reduce default max reload to 3
 avformat/format: Stop reading data at EOF during probing
 avcodec/jpeg2000dec: jpeg2000 has its own lowres option
 avcodec/huffyuvdec: avoid undefined behavior with get_vlc2() failure
 avcodec/cscd: Fix "CamStudio Lossless Codec 1.0" gzip files
 avcodec/cscd: Check for CamStudio Lossless Codec 1.0 behavior in end check of LZO files
 avcodec/mpeg4videodec: consider lowres in dest_pcm[]
 avcodec/hevcdec: Fix undefined memcpy()
 avcodec/mpeg4videodec: more unsigned in amv computation
 avcodec/tta: fix signed overflow in decorrelate
 avcodec/apedec: Fix 48khz 24bit below insane level
 avcodec/apedec: Fix CRC for 24bps and bigendian
 avcodec/xvididct: Fix integer overflow in idct_row()
 avformat/avr: Check sample rate
 avformat/imf_cpl: Replace NULL content_title_utf8 by ""
 avformat/imf_cpl: xmlNodeListGetString() can return NULL
 avcodec/pcm: allow Changing parameters
 avcodec/jpeg2000dec: Check for reduction factor and image offset
 avutil/softfloat: Basic documentation for av_sincos_sf()
 avutil/softfloat: fix av_sincos_sf()
 tools/target_dec_fuzzer: Adjust threshold for speex
 avcodec/utils: fix 2 integer overflows in get_audio_frame_duration()
 avcodec/hevcdec: Avoid null pointer dereferences in MC
 avcodec/takdsp: Fix integer overflows
 avcodec: Ignoring errors is only possible before the input end
 avformat/jpegxl_probe: Forward error codes
 avformat/jpegxl_probe: check length instead of blindly reading
 avformat/jpegxl_probe: Remove intermediate macro obfuscation around get_bits*()
 avcodec/noise_bsf: Check for wrapped frames
 avformat/oggparsetheora: clip duration within 64bit
 avformat/wavdec: Check that smv block fits in available space
 avcodec/tiff: add a zero DNG_LINEARIZATION_TABLE check
 avcodec/tak: Check remaining bits in ff_tak_decode_frame_header()
 avcodec/sonic: Fix two undefined integer overflows
 avcodec/utils: the IFF_ILBM implementation assumes that there are a multiple of 16 allocated
 avcodec/exr: Cleanup befor return
 avcodec/pngdec: Do not pass AVFrame into global header decode
 avcodec/pngdec: remove AVFrame argument from decode_iccp_chunk()
 avcodec/vorbisdec: Check codebook float values to be finite
 avcodec/g2meet: Replace fake allocation avoidance for framebuf
 avutil/tx_priv: Use unsigned in BF() to avoid signed overflows
 avcodec/lcldec: More space for rgb24
 avcodec/lcldec: Support 4:1:1 and 4:2:2 with odd width
 libavcodec/lcldec: width and height should not be unsigned
 avformat/imf: fix invalid resource handling
 avcodec/escape124: Check that blocks are allocated before use
 avcodec/huffyuvdec: Fix undefined behavior with shift
 avcodec/j2kenc: Replace RGB24 special case by generic test
 avcodec/j2kenc: Replace BGR48 / GRAY16 test by test for number of bits
 avcodec/j2kenc: simplify pixel format setup
 avcodec/j2kenc: Fix funky bpno errors on decoding
 avcodec/j2kenc: remove misleading pred value
 avcodec/j2kenc: fix 5/3 DWT identifer
 avcodec/vp3: Check width to avoid assertion failure
 avcodec/g729postfilter: Limit shift in long term filter
 configure: update copyright year
 Changelog: Add forgotten line
 libavformat/riffec: Zero-initialize channels in ff_get_wav_header
 avcodec/x86/mathops: clip constants used with shift instructions within inline assembly
 avcodec/libsvtav1: use larger of bit rate and max rate for buffer size
 avcodec/libsvtav1: only set max_buf_sz if both bitrate and rc_buf_sz is set
 avcodec/libsvtav1: remove compressed_ten_bit_format and simplify alloc_buffer
 avcodec/libsvtav1: replace vbv_bufsize with maximum_buffer_size_ms
 avcodec/vdpau_mpeg4: fix order of quant matrix coefficients
 avcodec/vdpau_mpeg12: fix order of quant matrix coefficients
 avcodec/nvdec_mpeg4: fix order of quant matrix coefficients
 avcodec/nvdec_mpeg2: fix order of quant matrix coefficients
 fftools/ffmpeg: avoid possible invalid reads with short -tag values
 avcodec/mp_cmp: reject invalid comparison function values
 avcodec/aacpsy: clip global_quality within the psy_vbr_map array boundaries
 avutil/wchar_filename: propagate MultiByteToWideChar() and WideCharToMultiByte() failures
 avformat/concatf: check if any nodes were allocated
 avcodec/nvenc: fix b-frame DTS behavior with fractional framerates

version 5.1.3:
- avcodec/tests/snowenc: Fix 2nd test
- avcodec/tests/snowenc: return a failure if DWT/IDWT mismatches
- avcodec/snowenc: Fix visual weight calculation
- avcodec/tests/snowenc: unbreak DWT tests
- avfilter/vf_untile: swap the chroma shift values used for plane offsets
- update for 5.1.3
- avcodec/mpeg12dec: Check input size
- avcodec/escape124: Fix some return codes
- avcodec/escape124: fix signdness of end of input check
- Use https for repository links
- avcodec/rpzaenc: stop accessing out of bounds frame
- avcodec/smcenc: stop accessing out of bounds frame
- avcodec/motionpixels: Mask pixels to valid values
- avcodec/xpmdec: Check size before allocation to avoid truncation
- avcodec/bink: Avoid undefined out of array end pointers in binkb_decode_plane()
- avcodec/bink: Fix off by 1 error in ref end
- avcodec/utils: Ensure linesize for SVQ3
- avcodec/utils: allocate a line more for VC1 and WMV3
- avcodec/videodsp_template: Adjust pointers to avoid undefined pointer things
- avcodec/pngdec: dont skip/read chunk twice
- avcodec/pngdec: Check deloco index more exactly
- avcodec/ffv1dec: Check that num h/v slices is supported
- avformat/mov: Check samplesize and offset to avoid integer overflow
- lavu/vulkan: fix handle type for 32-bit targets
- vulkan: Fix win/i386 calling convention
- avcodec/pictordec: Remove mid exit branch
- avcodec/eac3dec: avoid float noise in fixed mode addition to overflow
- avcodec/utils: use 32pixel alignment for bink
- avcodec/scpr3: Check bx
- avcodec/012v: Order operations for odd size handling
- avcodec/eatgq: : Check index increments in tgq_decode_block()
- avcodec/h274: fix include
- avcodec/scpr: Test bx before use
- avformat/mxfdec: Use 64bit in remainder
- avcodec/sunrast: Fix maplength check
- avcodec/wavpack: Avoid undefined shift in get_tail()
- avcodec/wavpack: Check for end of input in wv_unpack_dsd_high()
- avformat/id3v2: Check taglen in read_uslt()
- avcodec/tiff: Ignore tile_count
- avcodec/ffv1dec: restructure slice coordinate reading a bit
- avcodec/mlpdec: Check max matrix instead of max channel in noise check
- avutil/tx: Use unsigned in ff_tx_fft_sr_combine() to avoid undefined behavior
- swscale/input: Use more unsigned intermediates
- avcodec/alsdec: Check bits left before block decoding in non multi channel coding loop
- avcodec/alsdec: The minimal block is at least 7 bits
- avformat/replaygain: avoid undefined / negative abs
- swscale/output: Bias 16bps output calculations to improve non overflowing range for GBRP16/GBRPF32
- swscale/output: Bias 16bps output calculations to improve non overflowing range
- avcodec/speedhq: Check buf_size to be big enough for DC
- avcodec/ffv1dec: Fail earlier if prior context is corrupted
- avcodec/speexdec: Check channels > 2
- avformat/vividas: Check packet size
- hwcontext_vulkan: remove optional encode/decode extensions from the list
- avcodec/libjxldec: fix gamma22 and gamma28 recognition
- avcodec/mpeg12dec: use init_get_bits8 and check the return value
- avcodec/nvenc: fix vbv buffer size in cq mode
- avcodec/mjpegenc: take into account component count when writing the SOF header size
- swscale: aarch64: Fix yuv2rgb with negative strides
- avcodec/atrac3plus: reorder channels to match the output layout
- avcodec/aacdec: fix parsing streams with channel configuration 11
- libswscale: force a minimum size of the slide for bayer sources
- lavf/async: Fix ring_write return value
- avcodec/audiotoolboxenc: return AVERROR_EXTERNAL immediately when encode error
- avcodec/libjxlenc: avoid hard failure with unspecified primaries

version 5.1.2:
- avcodec/dstdec: Check for overflow in build_filter()
- avformat/spdifdec: Use 64bit to compute bit rate
- avformat/rpl: Use 64bit for duration computation
- avformat/xwma: Use av_rescale() for duration computation
- avformat/sdsdec: Use av_rescale() to avoid intermediate overflow in duration calculation
- avformat/sbgdec: Check ts_int in genrate_intervals
- avformat/sbgdec: clamp end_ts
- avformat/rmdec: check tag_size
- avformat/nutdec: Check fields
- avformat/flvdec: Use 64bit for sum_flv_tag_size
- avformat/jacosubdec: Fix overflow in get_shift()
- avformat/genh: Check nb_channels for IMA ADPCM
- avformat/dxa: avoid bpc overflows
- avformat/dhav: Use 64bit seek_back
- avformat/cafdec: Check that nb_frasmes fits within 64bit
- avformat/asfdec_o: Limit packet offset
- avformat/apm: Use 64bit for bit_rate computation
- avformat/ape: Check frames size
- avformat/icodec: Check nb_pal
- avformat/aiffdec: Use 64bit for block_duration use
- avformat/aiffdec: Check block_duration
- avformat/mxfdec: only probe max run in
- avformat/mxfdec: Check run_in is within 65536
- avcodec/mjpegdec: Check for unsupported bayer case
- avcodec/apedec: Fix integer overflow in filter_3800()
- avcodec/tta: Check 24bit scaling for overflow
- avcodec/mobiclip: Check quantizer for overflow
- avcodec/exr: Check preview psize
- avcodec/tiff: Fix loop detection
- libavformat/hls: Free keys
- avcodec/fmvc: Move frame allocation to a later stage
- avfilter/vf_showinfo: remove backspaces
- avcodec/speedhq: Check width
- avcodec/bink: disallow odd positioned scaled blocks
- avformat/cafenc: derive Opus frame size from the relevant stream parameters
- avformat/dashdec: Fix crash on invalid input/ENOMEM, fix leak
- lavc/videotoolbox: do not pass AVCodecContext to decoder output callback
- lavc/pthread_frame: always transfer stashed hwaccel state
- avcodec/arm/sbcenc: avoid callee preserved vfp registers
- avformat/riffdec: don't unconditionally overwrite WAVEFORMATEXTENSIBLE layout
- avfilter/vf_scale: overwrite the width and height expressions with the original values
- lavc/pthread_frame: avoid leaving stale hwaccel state in worker threads
- avutil/tests/.gitignore: Add channel_layout testtool


version 5.1.1:
- avformat/asfdec_o: limit recursion depth in asf_read_unknown()
- avformat/mov: Check count sums in build_open_gop_key_points()
- doc/git-howto.texi: Document commit signing
- libavcodec/8bps: Check that line lengths fit within the buffer
- avcodec/midivid: Perform lzss_uncompress() before ff_reget_buffer()
- libavformat/iff: Check for overflow in body_end calculation
- avformat/avidec: Prevent entity expansion attacks
- avcodec/h263dec: Sanity check against minimal I/P frame size
- avcodec/hevcdec: Check s->ref in the md5 path similar to hwaccel
- avcodec/mpegaudiodec_template: use unsigned shift in handle_crc()
- avformat/subviewerdec: Make read_ts() more flexible
- avcodec/mjpegdec: bayer and rct are incompatible
- MAINTAINERS: Add ED25519 key for signing my commits in the future
- avcodec/pngdec: Fix APNG_DISPOSE_OP_BACKGROUND
- avcodec/libvpx: fix assembling vp9 packets with alpha channel
- fftools/ffmpeg_opt: try to propagate the requested output channel layout
- avcodec/libsvtav1: properly initialize the flush EbBufferHeaderType struct
- configure: enable the av1_frame_split bsf for the av1 decoder
- swresample/swresample: fill the correct buffer to print the output layout string
- ffprobe: restore reporting error code for failed inputs
- ipfsgateway: Remove default gateway
- avcodec/libspeexdec: Fix use of uninitialized value
- avformat/avisynth: use ch_layout.nb_channels for channel count
- fate/lavf-image: Disable file checksums for exr tests
- tests/fate-run: Allow to skip file checksums for lavf_image
- fate/imf: Rename IMF fate-target
- avcodec/alac: don't fail if channels aren't set during init() when extradata is valid
- configure: properly require libx264 if enabled


version 5.1:
- add ipfs/ipns protocol support
- dialogue enhance audio filter
- dropped obsolete XvMC hwaccel
- pcm-bluray encoder
- DFPWM audio encoder/decoder and raw muxer/demuxer
- SITI filter
- Vizrt Binary Image encoder/decoder
- avsynctest source filter
- feedback video filter
- pixelize video filter
- colormap video filter
- colorchart video source filter
- multiply video filter
- PGS subtitle frame merge bitstream filter
- blurdetect filter
- tiltshelf audio filter
- QOI image format support
- ffprobe -o option
- virtualbass audio filter
- VDPAU AV1 hwaccel
- PHM image format support
- remap_opencl filter
- added chromakey_cuda filter


version 5.0:
- ADPCM IMA Westwood encoder
- Westwood AUD muxer
- ADPCM IMA Acorn Replay decoder
- Argonaut Games CVG demuxer
- Argonaut Games CVG muxer
- Concatf protocol
- afwtdn audio filter
- audio and video segment filters
- Apple Graphics (SMC) encoder
- hsvkey and hsvhold video filters
- adecorrelate audio filter
- atilt audio filter
- grayworld video filter
- AV1 Low overhead bitstream format muxer
- swscale slice threading
- MSN Siren decoder
- scharr video filter
- apsyclip audio filter
- morpho video filter
- amr parser
- (a)latency filters
- GEM Raster image decoder
- asdr audio filter
- speex decoder
- limitdiff video filter
- xcorrelate video filter
- varblur video filter
- huesaturation video filter
- colorspectrum source video filter
- RTP packetizer for uncompressed video (RFC 4175)
- bitpacked encoder
- VideoToolbox VP9 hwaccel
- VideoToolbox ProRes hwaccel
- support loongarch.
- aspectralstats audio filter
- adynamicsmooth audio filter
- libplacebo filter
- vflip_vulkan, hflip_vulkan and flip_vulkan filters
- adynamicequalizer audio filter
- yadif_videotoolbox filter
- VideoToolbox ProRes encoder
- anlmf audio filter
- IMF demuxer (experimental)


version 4.4:
- AudioToolbox output device
- MacCaption demuxer
- PGX decoder
- chromanr video filter
- VDPAU accelerated HEVC 10/12bit decoding
- ADPCM IMA Ubisoft APM encoder
- Rayman 2 APM muxer
- AV1 encoding support SVT-AV1
- Cineform HD encoder
- ADPCM Argonaut Games encoder
- Argonaut Games ASF muxer
- AV1 Low overhead bitstream format demuxer
- RPZA video encoder
- ADPCM IMA MOFLEX decoder
- MobiClip FastAudio decoder
- MobiClip video decoder
- MOFLEX demuxer
- MODS demuxer
- PhotoCD decoder
- MCA demuxer
- AV1 decoder (Hardware acceleration used only)
- SVS demuxer
- Argonaut Games BRP demuxer
- DAT demuxer
- aax demuxer
- IPU decoder, parser and demuxer
- Intel QSV-accelerated AV1 decoding
- Argonaut Games Video decoder
- libwavpack encoder removed
- ACE demuxer
- AVS3 demuxer
- AVS3 video decoder via libuavs3d
- Cintel RAW decoder
- VDPAU accelerated VP9 10/12bit decoding
- afreqshift and aphaseshift filters
- High Voltage Software ADPCM encoder
- LEGO Racers ALP (.tun & .pcm) muxer
- AV1 VAAPI decoder
- adenorm filter
- ADPCM IMA AMV encoder
- AMV muxer
- NVDEC AV1 hwaccel
- DXVA2/D3D11VA hardware accelerated AV1 decoding
- speechnorm filter
- SpeedHQ encoder
- asupercut filter
- asubcut filter
- Microsoft Paint (MSP) version 2 decoder
- Microsoft Paint (MSP) demuxer
- AV1 monochrome encoding support via libaom >= 2.0.1
- asuperpass and asuperstop filter
- shufflepixels filter
- tmidequalizer filter
- estdif filter
- epx filter
- Dolby E parser
- shear filter
- kirsch filter
- colortemperature filter
- colorcontrast filter
- PFM encoder
- colorcorrect filter
- binka demuxer
- XBM parser
- xbm_pipe demuxer
- colorize filter
- CRI parser
- aexciter audio filter
- exposure video filter
- monochrome video filter
- setts bitstream filter
- vif video filter
- OpenEXR image encoder
- Simbiosis IMX decoder
- Simbiosis IMX demuxer
- Digital Pictures SGA demuxer and decoders
- TTML subtitle encoder and muxer
- identity video filter
- msad video filter
- gophers protocol
- RIST protocol via librist


version 4.3:
- v360 filter
- Intel QSV-accelerated MJPEG decoding
- Intel QSV-accelerated VP9 decoding
- Support for TrueHD in mp4
- Support AMD AMF encoder on Linux (via Vulkan)
- IMM5 video decoder
- ZeroMQ protocol
- support Sipro ACELP.KELVIN decoding
- streamhash muxer
- sierpinski video source
- scroll video filter
- photosensitivity filter
- anlms filter
- arnndn filter
- bilateral filter
- maskedmin and maskedmax filters
- VDPAU VP9 hwaccel
- median filter
- QSV-accelerated VP9 encoding
- AV1 encoding support via librav1e
- AV1 frame merge bitstream filter
- AV1 Annex B demuxer
- axcorrelate filter
- mvdv decoder
- mvha decoder
- MPEG-H 3D Audio support in mp4
- thistogram filter
- freezeframes filter
- Argonaut Games ADPCM decoder
- Argonaut Games ASF demuxer
- xfade video filter
- xfade_opencl filter
- afirsrc audio filter source
- pad_opencl filter
- Simon & Schuster Interactive ADPCM decoder
- Real War KVAG demuxer
- CDToons video decoder
- siren audio decoder
- Rayman 2 ADPCM decoder
- Rayman 2 APM demuxer
- cas video filter
- High Voltage Software ADPCM decoder
- LEGO Racers ALP (.tun & .pcm) demuxer
- AMQP 0-9-1 protocol (RabbitMQ)
- Vulkan support
- avgblur_vulkan, overlay_vulkan, scale_vulkan and chromaber_vulkan filters
- ADPCM IMA MTF decoder
- FWSE demuxer
- DERF DPCM decoder
- DERF demuxer
- CRI HCA decoder
- CRI HCA demuxer
- overlay_cuda filter
- switch from AvxSynth to AviSynth+ on Linux
- mv30 decoder
- Expanded styling support for 3GPP Timed Text Subtitles (movtext)
- WebP parser
- tmedian filter
- maskedthreshold filter
- Support for muxing pcm and pgs in m2ts
- Cunning Developments ADPCM decoder
- asubboost filter
- Pro Pinball Series Soundbank demuxer
- pcm_rechunk bitstream filter
- scdet filter
- NotchLC decoder
- gradients source video filter
- MediaFoundation encoder wrapper
- untile filter
- Simon & Schuster Interactive ADPCM encoder
- PFM decoder
- dblur video filter
- Real War KVAG muxer


version 4.2:
- tpad filter
- AV1 decoding support through libdav1d
- dedot filter
- chromashift and rgbashift filters
- freezedetect filter
- truehd_core bitstream filter
- dhav demuxer
- PCM-DVD encoder
- GIF parser
- vividas demuxer
- hymt decoder
- anlmdn filter
- maskfun filter
- hcom demuxer and decoder
- ARBC decoder
- libaribb24 based ARIB STD-B24 caption support (profiles A and C)
- Support decoding of HEVC 4:4:4 content in nvdec and cuviddec
- removed libndi-newtek
- agm decoder
- KUX demuxer
- AV1 frame split bitstream filter
- lscr decoder
- lagfun filter
- asoftclip filter
- Support decoding of HEVC 4:4:4 content in vdpau
- colorhold filter
- xmedian filter
- asr filter
- showspatial multimedia filter
- VP4 video decoder
- IFV demuxer
- derain filter
- deesser filter
- mov muxer writes tracks with unspecified language instead of English by default
- add support for using clang to compile CUDA kernels


version 4.1:
- deblock filter
- tmix filter
- amplify filter
- fftdnoiz filter
- aderivative and aintegral audio filters
- pal75bars and pal100bars video filter sources
- support mbedTLS based TLS
- adeclick filter
- adeclip filter
- libtensorflow backend for DNN based filters like srcnn
- vc1 decoder is now bit-exact
- ATRAC9 decoder
- lensfun wrapper filter
- colorconstancy filter
- AVS2 video decoder via libdavs2
- IMM4 video decoder
- Brooktree ProSumer video decoder
- MatchWare Screen Capture Codec decoder
- WinCam Motion Video decoder
- 1D LUT filter (lut1d)
- RemotelyAnywhere Screen Capture decoder
- cue and acue filters
- support for AV1 in MP4
- transpose_npp filter
- AVS2 video encoder via libxavs2
- amultiply filter
- Block-Matching 3d (bm3d) denoising filter
- acrossover filter
- ilbc decoder
- audio denoiser as afftdn filter
- AV1 parser
- SER demuxer
- sinc audio filter source
- chromahold filter
- setparams filter
- vibrance filter
- decoding S12M timecode in h264
- xstack filter
- pcm vidc decoder and encoder
- (a)graphmonitor filter
- yadif_cuda filter


version 4.0:
- Bitstream filters for editing metadata in H.264, HEVC and MPEG-2 streams
- Dropped support for OpenJPEG versions 2.0 and below. Using OpenJPEG now
  requires 2.1 (or later) and pkg-config.
- VDA dropped (use VideoToolbox instead)
- MagicYUV encoder
- Raw AMR-NB and AMR-WB demuxers
- TiVo ty/ty+ demuxer
- Intel QSV-accelerated MJPEG encoding
- PCE support for extended channel layouts in the AAC encoder
- native aptX and aptX HD encoder and decoder
- Raw aptX and aptX HD muxer and demuxer
- NVIDIA NVDEC-accelerated H.264, HEVC, MJPEG, MPEG-1/2/4, VC1, VP8/9 hwaccel decoding
- Intel QSV-accelerated overlay filter
- mcompand audio filter
- acontrast audio filter
- OpenCL overlay filter
- video mix filter
- video normalize filter
- audio lv2 wrapper filter
- VAAPI MJPEG and VP8 decoding
- AMD AMF H.264 and HEVC encoders
- video fillborders filter
- video setrange filter
- nsp demuxer
- support LibreSSL (via libtls)
- AVX-512/ZMM support added
- Dropped support for building for Windows XP. The minimum supported Windows
  version is Windows Vista.
- deconvolve video filter
- entropy video filter
- hilbert audio filter source
- aiir audio filter
- aiff: add support for CD-ROM XA ADPCM
- Removed the ffserver program
- Removed the ffmenc and ffmdec muxer and demuxer
- VideoToolbox HEVC encoder and hwaccel
- VAAPI-accelerated ProcAmp (color balance), denoise and sharpness filters
- Add android_camera indev
- codec2 en/decoding via libcodec2
- muxer/demuxer for raw codec2 files and .c2 files
- Moved nvidia codec headers into an external repository.
  They can be found at http://git.videolan.org/?p=ffmpeg/nv-codec-headers.git
- native SBC encoder and decoder
- drmeter audio filter
- hapqa_extract bitstream filter
- filter_units bitstream filter
- AV1 Support through libaom
- E-AC-3 dependent frames support
- bitstream filter for extracting E-AC-3 core
- Haivision SRT protocol via libsrt
- segafilm muxer
- vfrdet filter
- SRCNN filter


version 3.4:
- deflicker video filter
- doubleweave video filter
- lumakey video filter
- pixscope video filter
- oscilloscope video filter
- config.log and other configuration files moved into ffbuild/ directory
- update cuvid/nvenc headers to Video Codec SDK 8.0.14
- afir audio filter
- scale_cuda CUDA based video scale filter
- librsvg support for svg rasterization
- crossfeed audio filter
- spec compliant VP9 muxing support in MP4
- remove the libnut muxer/demuxer wrappers
- remove the libschroedinger encoder/decoder wrappers
- surround audio filter
- sofalizer filter switched to libmysofa
- Gremlin Digital Video demuxer and decoder
- headphone audio filter
- superequalizer audio filter
- roberts video filter
- The x86 assembler default switched from yasm to nasm, pass
  --x86asmexe=yasm to configure to restore the old behavior.
- additional frame format support for Interplay MVE movies
- support for decoding through D3D11VA in ffmpeg
- limiter video filter
- libvmaf video filter
- Dolby E decoder and SMPTE 337M demuxer
- unpremultiply video filter
- tlut2 video filter
- floodfill video filter
- pseudocolor video filter
- raw G.726 muxer and demuxer, left- and right-justified
- NewTek NDI input/output device
- Some video filters with several inputs now use a common set of options:
  blend, libvmaf, lut3d, overlay, psnr, ssim.
  They must always be used by name.
- FITS demuxer and decoder
- FITS muxer and encoder
- add --disable-autodetect build switch
- drop deprecated qtkit input device (use avfoundation instead)
- despill video filter
- haas audio filter
- SUP/PGS subtitle muxer
- convolve video filter
- VP9 tile threading support
- KMS screen grabber
- CUDA thumbnail filter
- V4L2 mem2mem HW assisted codecs
- Rockchip MPP hardware decoding
- vmafmotion video filter
- use MIME type "G726" for little-endian G.726, "AAL2-G726" for big-endian G.726


version 3.3:
- CrystalHD decoder moved to new decode API
- add internal ebur128 library, remove external libebur128 dependency
- Pro-MPEG CoP #3-R2 FEC protocol
- premultiply video filter
- Support for spherical videos
- configure now fails if autodetect-libraries are requested but not found
- PSD Decoder
- 16.8 floating point pcm decoder
- 24.0 floating point pcm decoder
- Apple Pixlet decoder
- QDMC audio decoder
- NewTek SpeedHQ decoder
- MIDI Sample Dump Standard demuxer
- readeia608 filter
- Sample Dump eXchange demuxer
- abitscope multimedia filter
- Scenarist Closed Captions demuxer and muxer
- threshold filter
- midequalizer filter
- Optimal Huffman tables for (M)JPEG encoding
- VAAPI-accelerated MPEG-2 and VP8 encoding
- FM Screen Capture Codec decoder
- native Opus encoder
- ScreenPressor decoder
- incomplete ClearVideo decoder
- Intel QSV video scaling and deinterlacing filters
- Support MOV with multiple sample description tables
- XPM decoder
- Removed the legacy X11 screen grabber, use XCB instead
- MPEG-7 Video Signature filter
- Removed asyncts filter (use af_aresample instead)
- Intel QSV-accelerated VP8 video decoding
- VAAPI-accelerated deinterlacing


version 3.2:
- libopenmpt demuxer
- tee protocol
- Changed metadata print option to accept general urls
- Alias muxer for Ogg Video (.ogv)
- VP8 in Ogg muxing
- curves filter doesn't automatically insert points at x=0 and x=1 anymore
- 16-bit support in curves filter and selectivecolor filter
- OpenH264 decoder wrapper
- MediaCodec H.264/HEVC/MPEG-4/VP8/VP9 hwaccel
- True Audio (TTA) muxer
- crystalizer audio filter
- acrusher audio filter
- bitplanenoise video filter
- floating point support in als decoder
- fifo muxer
- maskedclamp filter
- hysteresis filter
- lut2 filter
- yuvtestsrc filter
- CUDA CUVID H.263/VP8/VP9/10 bit HEVC (Dithered) Decoding
- vaguedenoiser filter
- added threads option per filter instance
- weave filter
- gblur filter
- avgblur filter
- sobel and prewitt filter
- MediaCodec HEVC/MPEG-4/VP8/VP9 decoding
- Meridian Lossless Packing (MLP) / TrueHD encoder
- Non-Local Means (nlmeans) denoising filter
- sdl2 output device and ffplay support
- sdl1 output device and sdl1 support removed
- extended mov edit list support
- libfaac encoder removed
- Matroska muxer now writes CRC32 elements by default in all Level 1 elements
- sidedata video and asidedata audio filter
- Changed mapping of rtp MIME type G726 to codec g726le.
- spec compliant VAAPI/DXVA2 VC-1 decoding of slices in frame-coded images


version 3.1:
- DXVA2-accelerated HEVC Main10 decoding
- fieldhint filter
- loop video filter and aloop audio filter
- Bob Weaver deinterlacing filter
- firequalizer filter
- datascope filter
- bench and abench filters
- ciescope filter
- protocol blacklisting API
- MediaCodec H264 decoding
- VC-2 HQ RTP payload format (draft v1) depacketizer and packetizer
- VP9 RTP payload format (draft v2) packetizer
- AudioToolbox audio decoders
- AudioToolbox audio encoders
- coreimage filter (GPU based image filtering on OSX)
- libdcadec removed
- bitstream filter for extracting DTS core
- ADPCM IMA DAT4 decoder
- musx demuxer
- aix demuxer
- remap filter
- hash and framehash muxers
- colorspace filter
- hdcd filter
- readvitc filter
- VAAPI-accelerated format conversion and scaling
- libnpp/CUDA-accelerated format conversion and scaling
- Duck TrueMotion 2.0 Real Time decoder
- Wideband Single-bit Data (WSD) demuxer
- VAAPI-accelerated H.264/HEVC/MJPEG encoding
- DTS Express (LBR) decoder
- Generic OpenMAX IL encoder with support for Raspberry Pi
- IFF ANIM demuxer & decoder
- Direct Stream Transfer (DST) decoder
- loudnorm filter
- MTAF demuxer and decoder
- MagicYUV decoder
- OpenExr improvements (tile data and B44/B44A support)
- BitJazz SheerVideo decoder
- CUDA CUVID H264/HEVC decoder
- 10-bit depth support in native utvideo decoder
- libutvideo wrapper removed
- YUY2 Lossless Codec decoder
- VideoToolbox H.264 encoder


version 3.0:
- Common Encryption (CENC) MP4 encoding and decoding support
- DXV decoding
- extrastereo filter
- ocr filter
- alimiter filter
- stereowiden filter
- stereotools filter
- rubberband filter
- tremolo filter
- agate filter
- chromakey filter
- maskedmerge filter
- Screenpresso SPV1 decoding
- chromaprint fingerprinting muxer
- ffplay dynamic volume control
- displace filter
- selectivecolor filter
- extensive native AAC encoder improvements and removal of experimental flag
- ADPCM PSX decoder
- 3dostr, dcstr, fsb, genh, vag, xvag, ads, msf, svag & vpk demuxer
- zscale filter
- wve demuxer
- zero-copy Intel QSV transcoding in ffmpeg
- shuffleframes filter
- SDX2 DPCM decoder
- vibrato filter
- innoHeim/Rsupport Screen Capture Codec decoder
- ADPCM AICA decoder
- Interplay ACM demuxer and audio decoder
- XMA1 & XMA2 decoder
- realtime filter
- anoisesrc audio filter source
- IVR demuxer
- compensationdelay filter
- acompressor filter
- support encoding 16-bit RLE SGI images
- apulsator filter
- sidechaingate audio filter
- mipsdspr1 option has been renamed to mipsdsp
- aemphasis filter
- mips32r5 option has been removed
- mips64r6 option has been removed
- DXVA2-accelerated VP9 decoding
- SOFAlizer: virtual binaural acoustics filter
- VAAPI VP9 hwaccel
- audio high-order multiband parametric equalizer
- automatic bitstream filtering
- showspectrumpic filter
- libstagefright support removed
- spectrumsynth filter
- ahistogram filter
- only seek with the right mouse button in ffplay
- toggle full screen when double-clicking with the left mouse button in ffplay
- afftfilt filter
- convolution filter
- libquvi support removed
- support for dvaudio in wav and avi
- libaacplus and libvo-aacenc support removed
- Cineform HD decoder
- new DCA decoder with full support for DTS-HD extensions
- significant performance improvements in Windows Television (WTV) demuxer
- nnedi deinterlacer
- streamselect video and astreamselect audio filter
- swaprect filter
- metadata video and ametadata audio filter
- SMPTE VC-2 HQ profile support for the Dirac decoder
- SMPTE VC-2 native encoder supporting the HQ profile


version 2.8:
- colorkey video filter
- BFSTM/BCSTM demuxer
- little-endian ADPCM_THP decoder
- Hap decoder and encoder
- DirectDraw Surface image/texture decoder
- ssim filter
- optional new ASF demuxer
- showvolume filter
- Many improvements to the JPEG 2000 decoder
- Go2Meeting decoding support
- adrawgraph audio and drawgraph video filter
- removegrain video filter
- Intel QSV-accelerated MPEG-2 video and HEVC encoding
- Intel QSV-accelerated MPEG-2 video and HEVC decoding
- Intel QSV-accelerated VC-1 video decoding
- libkvazaar HEVC encoder
- erosion, dilation, deflate and inflate video filters
- Dynamic Audio Normalizer as dynaudnorm filter
- Reverse video and areverse audio filter
- Random filter
- deband filter
- AAC fixed-point decoding
- sidechaincompress audio filter
- bitstream filter for converting HEVC from MP4 to Annex B
- acrossfade audio filter
- allyuv and allrgb video sources
- atadenoise video filter
- OS X VideoToolbox support
- aphasemeter filter
- showfreqs filter
- vectorscope filter
- waveform filter
- hstack and vstack filter
- Support DNx100 (1440x1080@8)
- VAAPI hevc hwaccel
- VDPAU hevc hwaccel
- framerate filter
- Switched default encoders for webm to VP9 and Opus
- Removed experimental flag from the JPEG 2000 encoder


version 2.7:
- FFT video filter
- TDSC decoder
- DTS lossless extension (XLL) decoding (not lossless, disabled by default)
- showwavespic filter
- DTS decoding through libdcadec
- Drop support for nvenc API before 5.0
- nvenc HEVC encoder
- Detelecine filter
- Intel QSV-accelerated H.264 encoding
- MMAL-accelerated H.264 decoding
- basic APNG encoder and muxer with default extension "apng"
- unpack DivX-style packed B-frames in MPEG-4 bitstream filter
- WebM Live Chunk Muxer
- nvenc level and tier options
- chorus filter
- Canopus HQ/HQA decoder
- Automatically rotate videos based on metadata in ffmpeg
- improved Quickdraw compatibility
- VP9 high bit-depth and extended colorspaces decoding support
- WebPAnimEncoder API when available for encoding and muxing WebP
- Direct3D11-accelerated decoding
- Support Secure Transport
- Multipart JPEG demuxer


version 2.6:
- nvenc encoder
- 10bit spp filter
- colorlevels filter
- RIFX format for *.wav files
- RTP/mpegts muxer
- non continuous cache protocol support
- tblend filter
- cropdetect support for non 8bpp, absolute (if limit >= 1) and relative (if limit < 1.0) threshold
- Camellia symmetric block cipher
- OpenH264 encoder wrapper
- VOC seeking support
- Closed caption Decoder
- fspp, uspp, pp7 MPlayer postprocessing filters ported to native filters
- showpalette filter
- Twofish symmetric block cipher
- Support DNx100 (960x720@8)
- eq2 filter ported from libmpcodecs as eq filter
- removed libmpcodecs
- Changed default DNxHD colour range in QuickTime .mov derivatives to mpeg range
- ported softpulldown filter from libmpcodecs as repeatfields filter
- dcshift filter
- RTP depacketizer for loss tolerant payload format for MP3 audio (RFC 5219)
- RTP depacketizer for AC3 payload format (RFC 4184)
- palettegen and paletteuse filters
- VP9 RTP payload format (draft 0) experimental depacketizer
- RTP depacketizer for DV (RFC 6469)
- DXVA2-accelerated HEVC decoding
- AAC ELD 480 decoding
- Intel QSV-accelerated H.264 decoding
- DSS SP decoder and DSS demuxer
- Fix stsd atom corruption in DNxHD QuickTimes
- Canopus HQX decoder
- RTP depacketization of T.140 text (RFC 4103)
- Port MIPS optimizations to 64-bit


version 2.5:
- HEVC/H.265 RTP payload format (draft v6) packetizer
- SUP/PGS subtitle demuxer
- ffprobe -show_pixel_formats option
- CAST128 symmetric block cipher, ECB mode
- STL subtitle demuxer and decoder
- libutvideo YUV 4:2:2 10bit support
- XCB-based screen-grabber
- UDP-Lite support (RFC 3828)
- xBR scaling filter
- AVFoundation screen capturing support
- ffserver supports codec private options
- creating DASH compatible fragmented MP4, MPEG-DASH segmenting muxer
- WebP muxer with animated WebP support
- zygoaudio decoding support
- APNG demuxer
- postproc visualization support


version 2.4:
- Icecast protocol
- ported lenscorrection filter from frei0r filter
- large optimizations in dctdnoiz to make it usable
- ICY metadata are now requested by default with the HTTP protocol
- support for using metadata in stream specifiers in fftools
- LZMA compression support in TIFF decoder
- H.261 RTP payload format (RFC 4587) depacketizer and experimental packetizer
- HEVC/H.265 RTP payload format (draft v6) depacketizer
- added codecview filter to visualize information exported by some codecs
- Matroska 3D support thorugh side data
- HTML generation using texi2html is deprecated in favor of makeinfo/texi2any
- silenceremove filter


version 2.3:
- AC3 fixed-point decoding
- shuffleplanes filter
- subfile protocol
- Phantom Cine demuxer
- replaygain data export
- VP7 video decoder
- Alias PIX image encoder and decoder
- Improvements to the BRender PIX image decoder
- Improvements to the XBM decoder
- QTKit input device
- improvements to OpenEXR image decoder
- support decoding 16-bit RLE SGI images
- GDI screen grabbing for Windows
- alternative rendition support for HTTP Live Streaming
- AVFoundation input device
- Direct Stream Digital (DSD) decoder
- Magic Lantern Video (MLV) demuxer
- On2 AVC (Audio for Video) decoder
- support for decoding through DXVA2 in ffmpeg
- libbs2b-based stereo-to-binaural audio filter
- libx264 reference frames count limiting depending on level
- native Opus decoder
- display matrix export and rotation API
- WebVTT encoder
- showcqt multimedia filter
- zoompan filter
- signalstats filter
- hqx filter (hq2x, hq3x, hq4x)
- flanger filter
- Image format auto-detection
- LRC demuxer and muxer
- Samba protocol (via libsmbclient)
- WebM DASH Manifest muxer
- libfribidi support in drawtext


version 2.2:

- HNM version 4 demuxer and video decoder
- Live HDS muxer
- setsar/setdar filters now support variables in ratio expressions
- elbg filter
- string validation in ffprobe
- support for decoding through VDPAU in ffmpeg (the -hwaccel option)
- complete Voxware MetaSound decoder
- remove mp3_header_compress bitstream filter
- Windows resource files for shared libraries
- aeval filter
- stereoscopic 3d metadata handling
- WebP encoding via libwebp
- ATRAC3+ decoder
- VP8 in Ogg demuxing
- side & metadata support in NUT
- framepack filter
- XYZ12 rawvideo support in NUT
- Exif metadata support in WebP decoder
- OpenGL device
- Use metadata_header_padding to control padding in ID3 tags (currently used in
  MP3, AIFF, and OMA files), FLAC header, and the AVI "junk" block.
- Mirillis FIC video decoder
- Support DNx444
- libx265 encoder
- dejudder filter
- Autodetect VDA like all other hardware accelerations
- aliases and defaults for Ogg subtypes (opus, spx)


version 2.1:

- aecho filter
- perspective filter ported from libmpcodecs
- ffprobe -show_programs option
- compand filter
- RTMP seek support
- when transcoding with ffmpeg (i.e. not streamcopying), -ss is now accurate
  even when used as an input option. Previous behavior can be restored with
  the -noaccurate_seek option.
- ffmpeg -t option can now be used for inputs, to limit the duration of
  data read from an input file
- incomplete Voxware MetaSound decoder
- read EXIF metadata from JPEG
- DVB teletext decoder
- phase filter ported from libmpcodecs
- w3fdif filter
- Opus support in Matroska
- FFV1 version 1.3 is stable and no longer experimental
- FFV1: YUVA(444,422,420) 9, 10 and 16 bit support
- changed DTS stream id in lavf mpeg ps muxer from 0x8a to 0x88, to be
  more consistent with other muxers.
- adelay filter
- pullup filter ported from libmpcodecs
- ffprobe -read_intervals option
- Lossless and alpha support for WebP decoder
- Error Resilient AAC syntax (ER AAC LC) decoding
- Low Delay AAC (ER AAC LD) decoding
- mux chapters in ASF files
- SFTP protocol (via libssh)
- libx264: add ability to encode in YUVJ422P and YUVJ444P
- Fraps: use BT.709 colorspace by default for yuv, as reference fraps decoder does
- make decoding alpha optional for prores, ffv1 and vp6 by setting
  the skip_alpha flag.
- ladspa wrapper filter
- native VP9 decoder
- dpx parser
- max_error_rate parameter in ffmpeg
- PulseAudio output device
- ReplayGain scanner
- Enhanced Low Delay AAC (ER AAC ELD) decoding (no LD SBR support)
- Linux framebuffer output device
- HEVC decoder
- raw HEVC, HEVC in MOV/MP4, HEVC in Matroska, HEVC in MPEG-TS demuxing
- mergeplanes filter


version 2.0:

- curves filter
- reference-counting for AVFrame and AVPacket data
- ffmpeg now fails when input options are used for output file
  or vice versa
- support for Monkey's Audio versions from 3.93
- perms and aperms filters
- audio filtering support in ffplay
- 10% faster aac encoding on x86 and MIPS
- sine audio filter source
- WebP demuxing and decoding support
- ffmpeg options -filter_script and -filter_complex_script, which allow a
  filtergraph description to be read from a file
- OpenCL support
- audio phaser filter
- separatefields filter
- libquvi demuxer
- uniform options syntax across all filters
- telecine filter
- interlace filter
- smptehdbars source
- inverse telecine filters (fieldmatch and decimate)
- colorbalance filter
- colorchannelmixer filter
- The matroska demuxer can now output proper verbatim ASS packets. It will
  become the default at the next libavformat major bump.
- decent native animated GIF encoding
- asetrate filter
- interleave filter
- timeline editing with filters
- vidstabdetect and vidstabtransform filters for video stabilization using
  the vid.stab library
- astats filter
- trim and atrim filters
- ffmpeg -t and -ss (output-only) options are now sample-accurate when
  transcoding audio
- Matroska muxer can now put the index at the beginning of the file.
- extractplanes filter
- avectorscope filter
- ADPCM DTK decoder
- ADP demuxer
- RSD demuxer
- RedSpark demuxer
- ADPCM IMA Radical decoder
- zmq filters
- DCT denoiser filter (dctdnoiz)
- Wavelet denoiser filter ported from libmpcodecs as owdenoise (formerly "ow")
- Apple Intermediate Codec decoder
- Escape 130 video decoder
- FTP protocol support
- V4L2 output device
- 3D LUT filter (lut3d)
- SMPTE 302M audio encoder
- support for slice multithreading in libavfilter
- Hald CLUT support (generation and filtering)
- VC-1 interlaced B-frame support
- support for WavPack muxing (raw and in Matroska)
- XVideo output device
- vignette filter
- True Audio (TTA) encoder
- Go2Webinar decoder
- mcdeint filter ported from libmpcodecs
- sab filter ported from libmpcodecs
- ffprobe -show_chapters option
- WavPack encoding through libwavpack
- rotate filter
- spp filter ported from libmpcodecs
- libgme support
- psnr filter


version 1.2:

- VDPAU hardware acceleration through normal hwaccel
- SRTP support
- Error diffusion dither in Swscale
- Chained Ogg support
- Theora Midstream reconfiguration support
- EVRC decoder
- audio fade filter
- filtering audio with unknown channel layout
- allpass, bass, bandpass, bandreject, biquad, equalizer, highpass, lowpass
  and treble audio filter
- improved showspectrum filter, with multichannel support and sox-like colors
- histogram filter
- tee muxer
- il filter ported from libmpcodecs
- support ID3v2 tags in ASF files
- encrypted TTA stream decoding support
- RF64 support in WAV muxer
- noise filter ported from libmpcodecs
- Subtitles character encoding conversion
- blend filter
- stereo3d filter ported from libmpcodecs


version 1.1:

- stream disposition information printing in ffprobe
- filter for loudness analysis following EBU R128
- Opus encoder using libopus
- ffprobe -select_streams option
- Pinnacle TARGA CineWave YUV16 decoder
- TAK demuxer, decoder and parser
- DTS-HD demuxer
- remove -same_quant, it hasn't worked for years
- FFM2 support
- X-Face image encoder and decoder
- 24-bit FLAC encoding
- multi-channel ALAC encoding up to 7.1
- metadata (INFO tag) support in WAV muxer
- subtitles raw text decoder
- support for building DLLs using MSVC
- LVF demuxer
- ffescape tool
- metadata (info chunk) support in CAF muxer
- field filter ported from libmpcodecs
- AVR demuxer
- geq filter ported from libmpcodecs
- remove ffserver daemon mode
- AST muxer/demuxer
- new expansion syntax for drawtext
- BRender PIX image decoder
- ffprobe -show_entries option
- ffprobe -sections option
- ADPCM IMA Dialogic decoder
- BRSTM demuxer
- animated GIF decoder and demuxer
- PVF demuxer
- subtitles filter
- IRCAM muxer/demuxer
- Paris Audio File demuxer
- Virtual concatenation demuxer
- VobSub demuxer
- JSON captions for TED talks decoding support
- SOX Resampler support in libswresample
- aselect filter
- SGI RLE 8-bit / Silicon Graphics RLE 8-bit video decoder
- Silicon Graphics Motion Video Compressor 1 & 2 decoder
- Silicon Graphics Movie demuxer
- apad filter
- Resolution & pixel format change support with multithreading for H.264
- documentation split into per-component manuals
- pp (postproc) filter ported from MPlayer
- NIST Sphere demuxer
- MPL2, VPlayer, MPlayer, AQTitle, PJS and SubViewer v1 subtitles demuxers and decoders
- Sony Wave64 muxer
- adobe and limelight publisher authentication in RTMP
- data: URI scheme
- support building on the Plan 9 operating system
- kerndeint filter ported from MPlayer
- histeq filter ported from VirtualDub
- Megalux Frame demuxer
- 012v decoder
- Improved AVC Intra decoding support


version 1.0:

- INI and flat output in ffprobe
- Scene detection in libavfilter
- Indeo Audio decoder
- channelsplit audio filter
- setnsamples audio filter
- atempo filter
- ffprobe -show_data option
- RTMPT protocol support
- iLBC encoding/decoding via libilbc
- Microsoft Screen 1 decoder
- join audio filter
- audio channel mapping filter
- Microsoft ATC Screen decoder
- RTSP listen mode
- TechSmith Screen Codec 2 decoder
- AAC encoding via libfdk-aac
- Microsoft Expression Encoder Screen decoder
- RTMPS protocol support
- RTMPTS protocol support
- RTMPE protocol support
- RTMPTE protocol support
- showwaves and showspectrum filter
- LucasArts SMUSH SANM playback support
- LucasArts SMUSH VIMA audio decoder (ADPCM)
- LucasArts SMUSH demuxer
- SAMI, RealText and SubViewer demuxers and decoders
- Heart Of Darkness PAF playback support
- iec61883 device
- asettb filter
- new option: -progress
- 3GPP Timed Text encoder/decoder
- GeoTIFF decoder support
- ffmpeg -(no)stdin option
- Opus decoder using libopus
- caca output device using libcaca
- alphaextract and alphamerge filters
- concat filter
- flite filter
- Canopus Lossless Codec decoder
- bitmap subtitles in filters (experimental and temporary)
- MP2 encoding via TwoLAME
- bmp parser
- smptebars source
- asetpts filter
- hue filter
- ICO muxer
- SubRip encoder and decoder without embedded timing
- edge detection filter
- framestep filter
- ffmpeg -shortest option is now per-output file
  -pass and -passlogfile are now per-output stream
- volume measurement filter
- Ut Video encoder
- Microsoft Screen 2 decoder
- smartblur filter ported from MPlayer
- CPiA decoder
- decimate filter ported from MPlayer
- RTP depacketization of JPEG
- Smooth Streaming live segmenter muxer
- F4V muxer
- sendcmd and asendcmd filters
- WebVTT demuxer and decoder (simple tags supported)
- RTP packetization of JPEG
- faststart option in the MOV/MP4 muxer
- support for building with MSVC


version 0.11:

- Fixes: CVE-2012-2772, CVE-2012-2774, CVE-2012-2775, CVE-2012-2776, CVE-2012-2777,
         CVE-2012-2779, CVE-2012-2782, CVE-2012-2783, CVE-2012-2784, CVE-2012-2785,
         CVE-2012-2786, CVE-2012-2787, CVE-2012-2788, CVE-2012-2789, CVE-2012-2790,
         CVE-2012-2791, CVE-2012-2792, CVE-2012-2793, CVE-2012-2794, CVE-2012-2795,
         CVE-2012-2796, CVE-2012-2797, CVE-2012-2798, CVE-2012-2799, CVE-2012-2800,
         CVE-2012-2801, CVE-2012-2802, CVE-2012-2803, CVE-2012-2804,
- v408 Quicktime and Microsoft AYUV Uncompressed 4:4:4:4 encoder and decoder
- setfield filter
- CDXL demuxer and decoder
- Apple ProRes encoder
- ffprobe -count_packets and -count_frames options
- Sun Rasterfile Encoder
- ID3v2 attached pictures reading and writing
- WMA Lossless decoder
- bluray protocol
- blackdetect filter
- libutvideo encoder wrapper (--enable-libutvideo)
- swapuv filter
- bbox filter
- XBM encoder and decoder
- RealAudio Lossless decoder
- ZeroCodec decoder
- tile video filter
- Metal Gear Solid: The Twin Snakes demuxer
- OpenEXR image decoder
- removelogo filter
- drop support for ffmpeg without libavfilter
- drawtext video filter: fontconfig support
- ffmpeg -benchmark_all option
- super2xsai filter ported from libmpcodecs
- add libavresample audio conversion library for compatibility
- MicroDVD decoder
- Avid Meridien (AVUI) encoder and decoder
- accept + prefix to -pix_fmt option to disable automatic conversions.
- complete audio filtering in libavfilter and ffmpeg
- add fps filter
- vorbis parser
- png parser
- audio mix filter
- ffv1: support (draft) version 1.3


version 0.10:

- Fixes: CVE-2011-3929, CVE-2011-3934, CVE-2011-3935, CVE-2011-3936,
         CVE-2011-3937, CVE-2011-3940, CVE-2011-3941, CVE-2011-3944,
         CVE-2011-3945, CVE-2011-3946, CVE-2011-3947, CVE-2011-3949,
         CVE-2011-3950, CVE-2011-3951, CVE-2011-3952
- v410 Quicktime Uncompressed 4:4:4 10-bit encoder and decoder
- SBaGen (SBG) binaural beats script demuxer
- OpenMG Audio muxer
- Timecode extraction in DV and MOV
- thumbnail video filter
- XML output in ffprobe
- asplit audio filter
- tinterlace video filter
- astreamsync audio filter
- amerge audio filter
- ISMV (Smooth Streaming) muxer
- GSM audio parser
- SMJPEG muxer
- XWD encoder and decoder
- Automatic thread count based on detection number of (available) CPU cores
- y41p Brooktree Uncompressed 4:1:1 12-bit encoder and decoder
- ffprobe -show_error option
- Avid 1:1 10-bit RGB Packer codec
- v308 Quicktime Uncompressed 4:4:4 encoder and decoder
- yuv4 libquicktime packed 4:2:0 encoder and decoder
- ffprobe -show_frames option
- silencedetect audio filter
- ffprobe -show_program_version, -show_library_versions, -show_versions options
- rv34: frame-level multi-threading
- optimized iMDCT transform on x86 using SSE for for mpegaudiodec
- Improved PGS subtitle decoder
- dumpgraph option to lavfi device
- r210 and r10k encoders
- ffwavesynth decoder
- aviocat tool
- ffeval tool
- support encoding and decoding 4-channel SGI images


version 0.9:

- openal input device added
- boxblur filter added
- BWF muxer
- Flash Screen Video 2 decoder
- lavfi input device added
- added avconv, which is almost the same for now, except
for a few incompatible changes in the options, which will hopefully make them
easier to use. The changes are:
    * The options placement is now strictly enforced! While in theory the
      options for ffmpeg should be given in [input options] -i INPUT [output
      options] OUTPUT order, in practice it was possible to give output options
      before the -i and it mostly worked. Except when it didn't - the behavior was
      a bit inconsistent. In avconv, it is not possible to mix input and output
      options. All non-global options are reset after an input or output filename.
    * All per-file options are now truly per-file - they apply only to the next
      input or output file and specifying different values for different files
      will now work properly (notably -ss and -t options).
    * All per-stream options are now truly per-stream - it is possible to
      specify which stream(s) should a given option apply to. See the Stream
      specifiers section in the avconv manual for details.
    * In ffmpeg some options (like -newvideo/-newaudio/...) are irregular in the
      sense that they're specified after the output filename instead of before,
      like all other options. In avconv this irregularity is removed, all options
      apply to the next input or output file.
    * -newvideo/-newaudio/-newsubtitle options were removed. Not only were they
      irregular and highly confusing, they were also redundant. In avconv the -map
      option will create new streams in the output file and map input streams to
      them. E.g. avconv -i INPUT -map 0 OUTPUT will create an output stream for
      each stream in the first input file.
    * The -map option now has slightly different and more powerful syntax:
        + Colons (':') are used to separate file index/stream type/stream index
          instead of dots. Comma (',') is used to separate the sync stream instead
          of colon.. This is done for consistency with other options.
        + It's possible to specify stream type. E.g. -map 0:a:2 creates an
          output stream from the third input audio stream.
        + Omitting the stream index now maps all the streams of the given type,
          not just the first. E.g. -map 0:s creates output streams for all the
          subtitle streams in the first input file.
        + Since -map can now match multiple streams, negative mappings were
          introduced. Negative mappings disable some streams from an already
          defined map. E.g. '-map 0 -map -0:a:1' means 'create output streams for
          all the stream in the first input file, except for the second audio
          stream'.
    * There is a new option -c (or -codec) for choosing the decoder/encoder to
      use, which makes it possible to precisely specify target stream(s) consistently with
      other options. E.g. -c:v lib264 sets the codec for all video streams, -c:a:0
      libvorbis sets the codec for the first audio stream and -c copy copies all
      the streams without reencoding. Old -vcodec/-acodec/-scodec options are now
      aliases to -c:v/a/s
    * It is now possible to precisely specify which stream should an AVOption
      apply to. E.g. -b:v:0 2M sets the bitrate for the first video stream, while
      -b:a 128k sets the bitrate for all audio streams. Note that the old -ab 128k
      syntax is deprecated and will stop working soon.
    * -map_chapters now takes only an input file index and applies to the next
      output file. This is consistent with how all the other options work.
    * -map_metadata now takes only an input metadata specifier and applies to
      the next output file. Output metadata specifier is now part of the option
      name, similarly to the AVOptions/map/codec feature above.
    * -metadata can now be used to set metadata on streams and chapters, e.g.
      -metadata:s:1 language=eng sets the language of the first stream to 'eng'.
      This made -vlang/-alang/-slang options redundant, so they were removed.
    * -qscale option now uses stream specifiers and applies to all streams, not
      just video. I.e. plain -qscale number would now apply to all streams. To get
      the old behavior, use -qscale:v. Also there is now a shortcut -q for -qscale
      and -aq is now an alias for -q:a.
    * -vbsf/-absf/-sbsf options were removed and replaced by a -bsf option which
      uses stream specifiers. Use -bsf:v/a/s instead of the old options.
    * -itsscale option now uses stream specifiers, so its argument is only the
      scale parameter.
    * -intra option was removed, use -g 0 for the same effect.
    * -psnr option was removed, use -flags +psnr for the same effect.
    * -vf option is now an alias to the new -filter option, which uses stream specifiers.
    * -vframes/-aframes/-dframes options are now aliases to the new -frames option.
    * -vtag/-atag/-stag options are now aliases to the new -tag option.
- XMV demuxer
- LOAS demuxer
- ashowinfo filter added
- Windows Media Image decoder
- amovie source added
- LATM muxer/demuxer
- Speex encoder via libspeex
- JSON output in ffprobe
- WTV muxer
- Optional C++ Support (needed for libstagefright)
- H.264 Decoding on Android via Stagefright
- Prores decoder
- BIN/XBIN/ADF/IDF text file decoder
- aconvert audio filter added
- audio support to lavfi input device added
- libcdio-paranoia input device for audio CD grabbing
- Apple ProRes decoder
- CELT in Ogg demuxing
- G.723.1 demuxer and decoder
- libmodplug support (--enable-libmodplug)
- VC-1 interlaced decoding
- libutvideo wrapper (--enable-libutvideo)
- aevalsrc audio source added
- Ut Video decoder
- Speex encoding via libspeex
- 4:2:2 H.264 decoding support
- 4:2:2 and 4:4:4 H.264 encoding with libx264
- Pulseaudio input device
- Prores encoder
- Video Decoder Acceleration (VDA) HWAccel module.
- replacement Indeo 3 decoder
- new ffmpeg option: -map_channel
- volume audio filter added
- earwax audio filter added
- libv4l2 support (--enable-libv4l2)
- TLS/SSL and HTTPS protocol support
- AVOptions API rewritten and documented
- most of CODEC_FLAG2_*, some CODEC_FLAG_* and many codec-specific fields in
  AVCodecContext deprecated. Codec private options should be used instead.
- Properly working defaults in libx264 wrapper, support for native presets.
- Encrypted OMA files support
- Discworld II BMV decoding support
- VBLE Decoder
- OS X Video Decoder Acceleration (VDA) support
- compact and csv output in ffprobe
- pan audio filter
- IFF Amiga Continuous Bitmap (ACBM) decoder
- ass filter
- CRI ADX audio format muxer and demuxer
- Playstation Portable PMP format demuxer
- Microsoft Windows ICO demuxer
- life source
- PCM format support in OMA demuxer
- CLJR encoder
- new option: -report
- Dxtory capture format decoder
- cellauto source
- Simple segmenting muxer
- Indeo 4 decoder
- SMJPEG demuxer


version 0.8:

- many many things we forgot because we rather write code than changelogs
- WebM support in Matroska de/muxer
- low overhead Ogg muxing
- MMS-TCP support
- VP8 de/encoding via libvpx
- Demuxer for On2's IVF format
- Pictor/PC Paint decoder
- HE-AAC v2 decoder
- HE-AAC v2 encoding with libaacplus
- libfaad2 wrapper removed
- DTS-ES extension (XCh) decoding support
- native VP8 decoder
- RTSP tunneling over HTTP
- RTP depacketization of SVQ3
- -strict inofficial replaced by -strict unofficial
- ffplay -exitonkeydown and -exitonmousedown options added
- native GSM / GSM MS decoder
- RTP depacketization of QDM2
- ANSI/ASCII art playback system
- Lego Mindstorms RSO de/muxer
- libavcore added (and subsequently removed)
- SubRip subtitle file muxer and demuxer
- Chinese AVS encoding via libxavs
- ffprobe -show_packets option added
- RTP packetization of Theora and Vorbis
- RTP depacketization of MP4A-LATM
- RTP packetization and depacketization of VP8
- hflip filter
- Apple HTTP Live Streaming demuxer
- a64 codec
- MMS-HTTP support
- G.722 ADPCM audio encoder/decoder
- R10k video decoder
- ocv_smooth filter
- frei0r wrapper filter
- change crop filter syntax to width:height:x:y
- make the crop filter accept parametric expressions
- make ffprobe accept AVFormatContext options
- yadif filter
- blackframe filter
- Demuxer for Leitch/Harris' VR native stream format (LXF)
- RTP depacketization of the X-QT QuickTime format
- SAP (Session Announcement Protocol, RFC 2974) muxer and demuxer
- cropdetect filter
- ffmpeg -crop* options removed
- transpose filter added
- ffmpeg -force_key_frames option added
- demuxer for receiving raw rtp:// URLs without an SDP description
- single stream LATM/LOAS decoder
- setpts filter added
- Win64 support for optimized x86 assembly functions
- MJPEG/AVI1 to JPEG/JFIF bitstream filter
- ASS subtitle encoder and decoder
- IEC 61937 encapsulation for E-AC-3, TrueHD, DTS-HD (for HDMI passthrough)
- overlay filter added
- rename aspect filter to setdar, and pixelaspect to setsar
- IEC 61937 demuxer
- Mobotix .mxg demuxer
- frei0r source added
- hqdn3d filter added
- RTP depacketization of QCELP
- FLAC parser added
- gradfun filter added
- AMR-WB decoder
- replace the ocv_smooth filter with a more generic ocv filter
- Windows Televison (WTV) demuxer
- FFmpeg metadata format muxer and demuxer
- SubRip (srt) subtitle encoder and decoder
- floating-point AC-3 encoder added
- Lagarith decoder
- ffmpeg -copytb option added
- IVF muxer added
- Wing Commander IV movies decoder added
- movie source added
- Bink version 'b' audio and video decoder
- Bitmap Brothers JV playback system
- Apple HTTP Live Streaming protocol handler
- sndio support for playback and record
- Linux framebuffer input device added
- Chronomaster DFA decoder
- DPX image encoder
- MicroDVD subtitle file muxer and demuxer
- Playstation Portable PMP format demuxer
- fieldorder video filter added
- AAC encoding via libvo-aacenc
- AMR-WB encoding via libvo-amrwbenc
- xWMA demuxer
- Mobotix MxPEG decoder
- VP8 frame-multithreading
- NEON optimizations for VP8
- Lots of deprecated API cruft removed
- fft and imdct optimizations for AVX (Sandy Bridge) processors
- showinfo filter added
- SMPTE 302M AES3 audio decoder
- Apple Core Audio Format muxer
- 9 bits and 10 bits per sample support in the H.264 decoder
- 9 bits and 10 bits FFV1 encoding / decoding
- split filter added
- select filter added
- sdl output device added
- libmpcodecs video filter support (3 times as many filters than before)
- mpeg2 aspect ratio dection fixed
- libxvid aspect pickiness fixed
- Frame multithreaded decoding
- E-AC-3 audio encoder
- ac3enc: add channel coupling support
- floating-point sample format support to the ac3, eac3, dca, aac, and vorbis decoders.
- H264/MPEG frame-level multi-threading
- All av_metadata_* functions renamed to av_dict_* and moved to libavutil
- 4:4:4 H.264 decoding support
- 10-bit H.264 optimizations for x86
- lut, lutrgb, and lutyuv filters added
- buffersink libavfilter sink added
- Bump libswscale for recently reported ABI break
- New J2K encoder (via OpenJPEG)


version 0.7:

- all the changes for 0.8, but keeping API/ABI compatibility with the 0.6 release


version 0.6:

- PB-frame decoding for H.263
- deprecated vhook subsystem removed
- deprecated old scaler removed
- VQF demuxer
- Alpha channel scaler
- PCX encoder
- RTP packetization of H.263
- RTP packetization of AMR
- RTP depacketization of Vorbis
- CorePNG decoding support
- Cook multichannel decoding support
- introduced avlanguage helpers in libavformat
- 8088flex TMV demuxer and decoder
- per-stream language-tags extraction in asfdec
- V210 decoder and encoder
- remaining GPL parts in AC-3 decoder converted to LGPL
- QCP demuxer
- SoX native format muxer and demuxer
- AMR-NB decoding/encoding, AMR-WB decoding via OpenCORE libraries
- DPX image decoder
- Electronic Arts Madcow decoder
- DivX (XSUB) subtitle encoder
- nonfree libamr support for AMR-NB/WB decoding/encoding removed
- experimental AAC encoder
- RTP depacketization of ASF and RTSP from WMS servers
- RTMP support in libavformat
- noX handling for OPT_BOOL X options
- Wave64 demuxer
- IEC-61937 compatible Muxer
- TwinVQ decoder
- Bluray (PGS) subtitle decoder
- LPCM support in MPEG-TS (HDMV RID as found on Blu-ray disks)
- WMA Pro decoder
- Core Audio Format demuxer
- ATRAC1 decoder
- MD STUDIO audio demuxer
- RF64 support in WAV demuxer
- MPEG-4 Audio Lossless Coding (ALS) decoder
- -formats option split into -formats, -codecs, -bsfs, and -protocols
- IV8 demuxer
- CDG demuxer and decoder
- R210 decoder
- Auravision Aura 1 and 2 decoders
- Deluxe Paint Animation playback system
- SIPR decoder
- Adobe Filmstrip muxer and demuxer
- RTP depacketization of H.263
- Bink demuxer and audio/video decoders
- enable symbol versioning by default for linkers that support it
- IFF PBM/ILBM bitmap decoder
- concat protocol
- Indeo 5 decoder
- RTP depacketization of AMR
- WMA Voice decoder
- ffprobe tool
- AMR-NB decoder
- RTSP muxer
- HE-AAC v1 decoder
- Kega Game Video (KGV1) decoder
- VorbisComment writing for FLAC, Ogg FLAC and Ogg Speex files
- RTP depacketization of Theora
- HTTP Digest authentication
- RTMP/RTMPT/RTMPS/RTMPE/RTMPTE protocol support via librtmp
- Psygnosis YOP demuxer and video decoder
- spectral extension support in the E-AC-3 decoder
- unsharp video filter
- RTP hinting in the mov/3gp/mp4 muxer
- Dirac in Ogg demuxing
- seek to keyframes in Ogg
- 4:2:2 and 4:4:4 Theora decoding
- 35% faster VP3/Theora decoding
- faster AAC decoding
- faster H.264 decoding
- RealAudio 1.0 (14.4K) encoder


version 0.5:

- DV50 AKA DVCPRO50 encoder, decoder, muxer and demuxer
- TechSmith Camtasia (TSCC) video decoder
- IBM Ultimotion (ULTI) video decoder
- Sierra Online audio file demuxer and decoder
- Apple QuickDraw (qdrw) video decoder
- Creative ADPCM audio decoder (16 bits as well as 8 bits schemes)
- Electronic Arts Multimedia (WVE/UV2/etc.) file demuxer
- Miro VideoXL (VIXL) video decoder
- H.261 video encoder
- QPEG video decoder
- Nullsoft Video (NSV) file demuxer
- Shorten audio decoder
- LOCO video decoder
- Apple Lossless Audio Codec (ALAC) decoder
- Winnov WNV1 video decoder
- Autodesk Animator Studio Codec (AASC) decoder
- Indeo 2 video decoder
- Fraps FPS1 video decoder
- Snow video encoder/decoder
- Sonic audio encoder/decoder
- Vorbis audio decoder
- Macromedia ADPCM decoder
- Duck TrueMotion 2 video decoder
- support for decoding FLX and DTA extensions in FLIC files
- H.264 custom quantization matrices support
- ffserver fixed, it should now be usable again
- QDM2 audio decoder
- Real Cooker audio decoder
- TrueSpeech audio decoder
- WMA2 audio decoder fixed, now all files should play correctly
- RealAudio 14.4 and 28.8 decoders fixed
- JPEG-LS decoder
- build system improvements
- tabs and trailing whitespace removed from the codebase
- CamStudio video decoder
- AIFF/AIFF-C audio format, encoding and decoding
- ADTS AAC file reading and writing
- Creative VOC file reading and writing
- American Laser Games multimedia (*.mm) playback system
- Zip Motion Blocks Video decoder
- improved Theora/VP3 decoder
- True Audio (TTA) decoder
- AVS demuxer and video decoder
- JPEG-LS encoder
- Smacker demuxer and decoder
- NuppelVideo/MythTV demuxer and RTjpeg decoder
- KMVC decoder
- MPEG-2 intra VLC support
- MPEG-2 4:2:2 encoder
- Flash Screen Video decoder
- GXF demuxer
- Chinese AVS decoder
- GXF muxer
- MXF demuxer
- VC-1/WMV3/WMV9 video decoder
- MacIntel support
- AviSynth support
- VMware video decoder
- VP5 video decoder
- VP6 video decoder
- WavPack lossless audio decoder
- Targa (.TGA) picture decoder
- Vorbis audio encoder
- Delphine Software .cin demuxer/audio and video decoder
- Tiertex .seq demuxer/video decoder
- MTV demuxer
- TIFF picture encoder and decoder
- GIF picture decoder
- Intel Music Coder decoder
- Zip Motion Blocks Video encoder
- Musepack decoder
- Flash Screen Video encoder
- Theora encoding via libtheora
- BMP encoder
- WMA encoder
- GSM-MS encoder and decoder
- DCA decoder
- DXA demuxer and decoder
- DNxHD decoder
- Gamecube movie (.THP) playback system
- Blackfin optimizations
- Interplay C93 demuxer and video decoder
- Bethsoft VID demuxer and video decoder
- CRYO APC demuxer
- ATRAC3 decoder
- V.Flash PTX decoder
- RoQ muxer, RoQ audio encoder
- Renderware TXD demuxer and decoder
- extern C declarations for C++ removed from headers
- sws_flags command line option
- codebook generator
- RoQ video encoder
- QTRLE encoder
- OS/2 support removed and restored again
- AC-3 decoder
- NUT muxer
- additional SPARC (VIS) optimizations
- Matroska muxer
- slice-based parallel H.264 decoding
- Monkey's Audio demuxer and decoder
- AMV audio and video decoder
- DNxHD encoder
- H.264 PAFF decoding
- Nellymoser ASAO decoder
- Beam Software SIFF demuxer and decoder
- libvorbis Vorbis decoding removed in favor of native decoder
- IntraX8 (J-Frame) subdecoder for WMV2 and VC-1
- Ogg (Theora, Vorbis and FLAC) muxer
- The "device" muxers and demuxers are now in a new libavdevice library
- PC Paintbrush PCX decoder
- Sun Rasterfile decoder
- TechnoTrend PVA demuxer
- Linux Media Labs MPEG-4 (LMLM4) demuxer
- AVM2 (Flash 9) SWF muxer
- QT variant of IMA ADPCM encoder
- VFW grabber
- iPod/iPhone compatible mp4 muxer
- Mimic decoder
- MSN TCP Webcam stream demuxer
- RL2 demuxer / decoder
- IFF demuxer
- 8SVX audio decoder
- non-recursive Makefiles
- BFI demuxer
- MAXIS EA XA (.xa) demuxer / decoder
- BFI video decoder
- OMA demuxer
- MLP/TrueHD decoder
- Electronic Arts CMV decoder
- Motion Pixels Video decoder
- Motion Pixels MVI demuxer
- removed animated GIF decoder/demuxer
- D-Cinema audio muxer
- Electronic Arts TGV decoder
- Apple Lossless Audio Codec (ALAC) encoder
- AAC decoder
- floating point PCM encoder/decoder
- MXF muxer
- DV100 AKA DVCPRO HD decoder and demuxer
- E-AC-3 support added to AC-3 decoder
- Nellymoser ASAO encoder
- ASS and SSA demuxer and muxer
- liba52 wrapper removed
- SVQ3 watermark decoding support
- Speex decoding via libspeex
- Electronic Arts TGQ decoder
- RV40 decoder
- QCELP / PureVoice decoder
- RV30 decoder
- hybrid WavPack support
- R3D REDCODE demuxer
- ALSA support for playback and record
- Electronic Arts TQI decoder
- OpenJPEG based JPEG 2000 decoder
- NC (NC4600) camera file demuxer
- Gopher client support
- MXF D-10 muxer
- generic metadata API
- flash ScreenVideo2 encoder


version 0.4.9-pre1:

- DV encoder, DV muxer
- Microsoft RLE video decoder
- Microsoft Video-1 decoder
- Apple Animation (RLE) decoder
- Apple Graphics (SMC) decoder
- Apple Video (RPZA) decoder
- Cinepak decoder
- Sega FILM (CPK) file demuxer
- Westwood multimedia support (VQA & AUD files)
- Id Quake II CIN playback support
- 8BPS video decoder
- FLIC playback support
- RealVideo 2.0 (RV20) decoder
- Duck TrueMotion v1 (DUCK) video decoder
- Sierra VMD demuxer and video decoder
- MSZH and ZLIB decoder support
- SVQ1 video encoder
- AMR-WB support
- PPC optimizations
- rate distortion optimal cbp support
- rate distorted optimal ac prediction for MPEG-4
- rate distorted optimal lambda->qp support
- AAC encoding with libfaac
- Sunplus JPEG codec (SP5X) support
- use Lagrange multiplier instead of QP for ratecontrol
- Theora/VP3 decoding support
- XA and ADX ADPCM codecs
- export MPEG-2 active display area / pan scan
- Add support for configuring with IBM XLC
- floating point AAN DCT
- initial support for zygo video (not complete)
- RGB ffv1 support
- new audio/video parser API
- av_log() system
- av_read_frame() and av_seek_frame() support
- missing last frame fixes
- seek by mouse in ffplay
- noise reduction of DCT coefficients
- H.263 OBMC & 4MV support
- H.263 alternative inter vlc support
- H.263 loop filter
- H.263 slice structured mode
- interlaced DCT support for MPEG-2 encoding
- stuffing to stay above min_bitrate
- MB type & QP visualization
- frame stepping for ffplay
- interlaced motion estimation
- alternate scantable support
- SVCD scan offset support
- closed GOP support
- SSE2 FDCT
- quantizer noise shaping
- G.726 ADPCM audio codec
- MS ADPCM encoding
- multithreaded/SMP motion estimation
- multithreaded/SMP encoding for MPEG-1/MPEG-2/MPEG-4/H.263
- multithreaded/SMP decoding for MPEG-2
- FLAC decoder
- Metrowerks CodeWarrior suppport
- H.263+ custom pcf support
- nicer output for 'ffmpeg -formats'
- Matroska demuxer
- SGI image format, encoding and decoding
- H.264 loop filter support
- H.264 CABAC support
- nicer looking arrows for the motion vector visualization
- improved VCD support
- audio timestamp drift compensation
- MPEG-2 YUV 422/444 support
- polyphase kaiser windowed sinc and blackman nuttall windowed sinc audio resample
- better image scaling
- H.261 support
- correctly interleave packets during encoding
- VIS optimized motion compensation
- intra_dc_precision>0 encoding support
- support reuse of motion vectors/MB types/field select values of the source video
- more accurate deblock filter
- padding support
- many optimizations and bugfixes
- FunCom ISS audio file demuxer and according ADPCM decoding


version 0.4.8:

- MPEG-2 video encoding (Michael)
- Id RoQ playback subsystem (Mike Melanson and Tim Ferguson)
- Wing Commander III Movie (.mve) file playback subsystem (Mike Melanson
  and Mario Brito)
- Xan DPCM audio decoder (Mario Brito)
- Interplay MVE playback subsystem (Mike Melanson)
- Duck DK3 and DK4 ADPCM audio decoders (Mike Melanson)


version 0.4.7:

- RealAudio 1.0 (14_4) and 2.0 (28_8) native decoders. Author unknown, code from mplayerhq
  (originally from public domain player for Amiga at http://www.honeypot.net/audio)
- current version now also compiles with older GCC (Fabrice)
- 4X multimedia playback system including 4xm file demuxer (Mike
  Melanson), and 4X video and audio codecs (Michael)
- Creative YUV (CYUV) decoder (Mike Melanson)
- FFV1 codec (our very simple lossless intra only codec, compresses much better
  than HuffYUV) (Michael)
- ASV1 (Asus), H.264, Intel indeo3 codecs have been added (various)
- tiny PNG encoder and decoder, tiny GIF decoder, PAM decoder (PPM with
  alpha support), JPEG YUV colorspace support. (Fabrice Bellard)
- ffplay has been replaced with a newer version which uses SDL (optionally)
  for multiplatform support (Fabrice)
- Sorenson Version 3 codec (SVQ3) support has been added (decoding only) - donated
  by anonymous
- AMR format has been added (Johannes Carlsson)
- 3GP support has been added (Johannes Carlsson)
- VP3 codec has been added (Mike Melanson)
- more MPEG-1/2 fixes
- better multiplatform support, MS Visual Studio fixes (various)
- AltiVec optimizations (Magnus Damn and others)
- SH4 processor support has been added (BERO)
- new public interfaces (avcodec_get_pix_fmt) (Roman Shaposhnick)
- VOB streaming support (Brian Foley)
- better MP3 autodetection (Andriy Rysin)
- qpel encoding (Michael)
- 4mv+b frames encoding finally fixed (Michael)
- chroma ME (Michael)
- 5 comparison functions for ME (Michael)
- B-frame encoding speedup (Michael)
- WMV2 codec (unfinished - Michael)
- user specified diamond size for EPZS (Michael)
- Playstation STR playback subsystem, still experimental (Mike and Michael)
- ASV2 codec (Michael)
- CLJR decoder (Alex)

.. And lots more new enhancements and fixes.


version 0.4.6:

- completely new integer only MPEG audio layer 1/2/3 decoder rewritten
  from scratch
- Recoded DCT and motion vector search with gcc (no longer depends on nasm)
- fix quantization bug in AC3 encoder
- added PCM codecs and format. Corrected WAV/AVI/ASF PCM issues
- added prototype ffplay program
- added GOB header parsing on H.263/H.263+ decoder (Juanjo)
- bug fix on MCBPC tables of H.263 (Juanjo)
- bug fix on DC coefficients of H.263 (Juanjo)
- added Advanced Prediction Mode on H.263/H.263+ decoder (Juanjo)
- now we can decode H.263 streams found in QuickTime files (Juanjo)
- now we can decode H.263 streams found in VIVO v1 files(Juanjo)
- preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
- added GOB header for H.263/H.263+ coding on RTP mode (Juanjo)
- now H.263 picture size is returned on the first decoded frame (Juanjo)
- added first regression tests
- added MPEG-2 TS demuxer
- new demux API for libav
- more accurate and faster IDCT (Michael)
- faster and entropy-controlled motion search (Michael)
- two pass video encoding (Michael)
- new video rate control (Michael)
- added MSMPEG4V1, MSMPEGV2 and WMV1 support (Michael)
- great performance improvement of video encoders and decoders (Michael)
- new and faster bit readers and vlc parsers (Michael)
- high quality encoding mode: tries all macroblock/VLC types (Michael)
- added DV video decoder
- preliminary RTP/RTSP support in ffserver and libavformat
- H.263+ AIC decoding/encoding support (Juanjo)
- VCD MPEG-PS mode (Juanjo)
- PSNR stuff (Juanjo)
- simple stats output (Juanjo)
- 16-bit and 15-bit RGB/BGR/GBR support (Bisqwit)


version 0.4.5:

- some header fixes (Zdenek Kabelac <kabi at informatics.muni.cz>)
- many MMX optimizations (Nick Kurshev <nickols_k at mail.ru>)
- added configure system (actually a small shell script)
- added MPEG audio layer 1/2/3 decoding using LGPL'ed mpglib by
  Michael Hipp (temporary solution - waiting for integer only
  decoder)
- fixed VIDIOCSYNC interrupt
- added Intel H.263 decoding support ('I263' AVI fourCC)
- added Real Video 1.0 decoding (needs further testing)
- simplified image formats again. Added PGM format (=grey
  pgm). Renamed old PGM to PGMYUV.
- fixed msmpeg4 slice issues (tell me if you still find problems)
- fixed OpenDivX bugs with newer versions (added VOL header decoding)
- added support for MPlayer interface
- added macroblock skip optimization
- added MJPEG decoder
- added mmx/mmxext IDCT from libmpeg2
- added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
  <celer at shell.scrypt.net>)
- added pixel format conversion layer (e.g. for MJPEG or PPM)
- added deinterlacing option
- MPEG-1/2 fixes
- MPEG-4 vol header fixes (Jonathan Marsden <snmjbm at pacbell.net>)
- ARM optimizations (Lionel Ulmer <lionel.ulmer at free.fr>).
- Windows porting of file converter
- added MJPEG raw format (input/output)
- added JPEG image format support (input/output)


version 0.4.4:

- fixed some std header definitions (Bjorn Lindgren
  <bjorn.e.lindgren at telia.com>).
- added MPEG demuxer (MPEG-1 and 2 compatible).
- added ASF demuxer
- added prototype RM demuxer
- added AC3 decoding (done with libac3 by Aaron Holtzman)
- added decoding codec parameter guessing (.e.g. for MPEG, because the
  header does not include them)
- fixed header generation in MPEG-1, AVI and ASF muxer: wmplayer can now
  play them (only tested video)
- fixed H.263 white bug
- fixed phase rounding in img resample filter
- add MMX code for polyphase img resample filter
- added CPU autodetection
- added generic title/author/copyright/comment string handling (ASF and RM
  use them)
- added SWF demux to extract MP3 track (not usable yet because no MP3
  decoder)
- added fractional frame rate support
- codecs are no longer searched by read_header() (should fix ffserver
  segfault)


version 0.4.3:

- BGR24 patch (initial patch by Jeroen Vreeken <pe1rxq at amsat.org>)
- fixed raw yuv output
- added motion rounding support in MPEG-4
- fixed motion bug rounding in MSMPEG4
- added B-frame handling in video core
- added full MPEG-1 decoding support
- added partial (frame only) MPEG-2 support
- changed the FOURCC code for H.263 to "U263" to be able to see the
  +AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
  this +codec ;) (JuanJo).
- Halfpel motion estimation after MB type selection (JuanJo)
- added pgm and .Y.U.V output format
- suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
  output.
- added pgmpipe I/O format (original patch from Martin Aumueller
  <lists at reserv.at>, but changed completely since we use a format
  instead of a protocol)


version 0.4.2:

- added H.263/MPEG-4/MSMPEG4 decoding support. MPEG-4 decoding support
  (for OpenDivX) is almost complete: 8x8 MVs and rounding are
  missing. MSMPEG4 support is complete.
- added prototype MPEG-1 decoder. Only I- and P-frames handled yet (it
  can decode ffmpeg MPEGs :-)).
- added libavcodec API documentation (see apiexample.c).
- fixed image polyphase bug (the bottom of some images could be
  greenish)
- added support for non clipped motion vectors (decoding only)
  and image sizes non-multiple of 16
- added support for AC prediction (decoding only)
- added file overwrite confirmation (can be disabled with -y)
- added custom size picture to H.263 using H.263+ (Juanjo)


version 0.4.1:

- added MSMPEG4 (aka DivX) compatible encoder. Changed default codec
  of AVI and ASF to DIV3.
- added -me option to set motion estimation method
  (default=log). suppressed redundant -hq option.
- added options -acodec and -vcodec to force a given codec (useful for
  AVI for example)
- fixed -an option
- improved dct_quantize speed
- factorized some motion estimation code


version 0.4.0:

- removing grab code from ffserver and moved it to ffmpeg. Added
  multistream support to ffmpeg.
- added timeshifting support for live feeds (option ?date=xxx in the
  URL)
- added high quality image resize code with polyphase filter (need
  mmx/see optimization). Enable multiple image size support in ffserver.
- added multi live feed support in ffserver
- suppressed master feature from ffserver (it should be done with an
  external program which opens the .ffm url and writes it to another
  ffserver)
- added preliminary support for video stream parsing (WAV and AVI half
  done). Added proper support for audio/video file conversion in
  ffmpeg.
- added preliminary support for video file sending from ffserver
- redesigning I/O subsystem: now using URL based input and output
  (see avio.h)
- added WAV format support
- added "tty user interface" to ffmpeg to stop grabbing gracefully
- added MMX/SSE optimizations to SAD (Sums of Absolutes Differences)
  (Juan J. Sierralta P. a.k.a. "Juanjo" <juanjo at atmlab.utfsm.cl>)
- added MMX DCT from mpeg2_movie 1.5 (Juanjo)
- added new motion estimation algorithms, log and phods (Juanjo)
- changed directories: libav for format handling, libavcodec for
  codecs


version 0.3.4:

- added stereo in MPEG audio encoder


version 0.3.3:

- added 'high quality' mode which use motion vectors. It can be used in
  real time at low resolution.
- fixed rounding problems which caused quality problems at high
  bitrates and large GOP size


version 0.3.2: small fixes

- ASF fixes
- put_seek bug fix


version 0.3.1: added avi/divx support

- added AVI support
- added MPEG-4 codec compatible with OpenDivX. It is based on the H.263 codec
- added sound for flash format (not tested)


version 0.3: initial public release