ffmpeg/tests/ref/lavfi/alphamerge_rgb
Steven Robertson 82ecae8a70 lavfi: add alphaextract and alphamerge filters
These filters are designed for storing and transmitting video sequences
with alpha using higher-efficiency codecs such as x264 which don't
natively support an alpha channel. 'alphaextract' takes an input stream
with an alpha channel and returns a video containing just the alpha
component as a grayscale value; 'alphamerge' takes an RGB or YUV stream
and adds an alpha channel recovered from a second grayscale stream.

Signed-off-by: Steven Robertson <steven@strobe.cc>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
2012-07-22 12:17:34 +02:00

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alphamerge_rgb b706818ea0d324e0d43adbaef9ab3470