#9086: Cannot copy vp9 stream from webm to mp4
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Reporter: yrrqxk | Type: defect
Status: new | Priority: normal
Component: | Version: git-
undetermined | master
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug:
I cannot copy the stream of this webm to an mp4 container. It can be
copied to another webm and re-encoded to either webm or mp4 without issue.
Copying this stream to another webm seems to also copy the defect as
trying to copy from one webm to another then copy to mp4 results in the
same error. This even happens with clips from affected files as you can
see in the attached file.
If this is relevant, the files are produced by youtube-dl and the issue
only seems to happen when the video was in DASH format. This has been an
issue for some time (months) across multiple youtube-dl versions and
ffmpeg versions.
How to reproduce:
{{{
ffmpeg.exe -i test.webm -c copy test.mp4
ffmpeg version:
2021-01-20-git-2021dbe1d6-full_build-www.gyan.dev
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9086>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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