How to use VP9 for encoding video with alpha channel

Ptilopsis

New Member
VP9 should support videos with alpha channel, and I've already set the color format to rgba and the color space to srgb. FFmpeg output and .mkv container also used. But the color format of the output video is still nv12.
When I set the encoder into png, it works correctly, so I guess it might be the problem of inner ffmpeg.
 

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  • 2024-04-21 00-15-14.txt
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koala

Active Member
Please post a screenshot of your encoder settings, because they are not written to the logfile for custom ffmpeg output.
 

Ptilopsis

New Member
Please post a screenshot of your encoder settings, because they are not written to the logfile for custom ffmpeg output.
1713638547001.png
 

Ptilopsis

New Member
Well, I found an embarrassing thing is that the video coded by qtrle even had a higher bitrate than png
 
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