[FFmpeg-trac] #8843(avfilter:open): concat Segmentation fault filter_complex
FFmpeg
trac at avcodec.org
Sun Aug 9 17:14:41 EEST 2020
#8843: concat Segmentation fault filter_complex
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Reporter: dirvann | Owner: dirvann
Type: defect | Status: open
Priority: normal | Component: avfilter
Version: git-master | Resolution:
Keywords: crash amix | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by dirvann):
Replying to [comment:13 Cigaes]:
> I very much confirm the command-line I gave reproduces the problem with
only two segments.
>
> The problem seems to be in the amix filter: it sends the last frame
without a timestamp. The following patch protects concat from it and
prevents the segfault, resulting in an error with a message instead.
>
> https://ffmpeg.org/pipermail/ffmpeg-devel/2020-August/267563.html
>
> For a proper fix, amix needs to be investigated.
>
> I suggest trying to use amerge and pan instead.
Sorry, I thought you said your code did work. Indeed your code also caused
the segmentation fault as I ran it.
Thank you for the suggestion. I'm going to try to implement amix with
amerge and pan like you said; for now at least. Hopefully it works. :)
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Ticket URL: <https://trac.ffmpeg.org/ticket/8843#comment:14>
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