#9884: CRF affects the number of produced frames in VP9
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Reporter: Athari | Owner: (none)
Type: defect | Status: open
Priority: normal | Component: avcodec
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 1 |
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Comment (by Athari):
Replying to [comment:4 James]:
> This happens only when you try to encode a stream with an alpha channel.
The alpha channel is encoded as a separate stream, and our wrapper is not
handling it right.
> If you don't care about retaining that from your input images, a
workaround is to force a pixel format without alpha, using -pix_fmt
yuv420p or similar.
I need this for Telegram, so VP9+YUVA420p+WebM is the only option for me.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9884#comment:5>
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