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alphamerge_alphaextract_yuv

alphamerge_alphaextract_yuv 138 B
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  1. sws_flags=+accurate_rnd+bitexact;
    2. 

  2. format=yuv420p, split, alphamerge, split [x][y];
    3. 

  3. [y]        alphaextract [alpha];
    4. 

  4. [x][alpha] alphamerge
    5.