[FFmpeg-trac] #7502(undetermined:new): VAAPI encoding on Coffee Lake skipping/missing frames
FFmpeg
trac at avcodec.org
Sun Oct 28 19:20:49 EET 2018
#7502: VAAPI encoding on Coffee Lake skipping/missing frames
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Reporter: dseeker | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: vaapi | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
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Comment (by jkqxz):
Can you try with <https://lists.ffmpeg.org/pipermail/ffmpeg-
devel/2018-October/235692.html> applied?
The only problem I can see here is that the SAR gets written incorrectly
because it doesn't fit in the 2^16^ range. I'm not sure how that causes
the observed issue, but fixing it seems to help.
That is, if I fix the SAR in your file with:
{{{
ffmpeg -i vaapi_skipping-frames_h264.mp4 -c:v copy -bsf:v
h264_metadata=sample_aspect_ratio=1 output.mp4
}}}
then the output file plays correctly where the input did not.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7502#comment:3>
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