Changes between Initial Version and Version 2 of Ticket #9970


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Timestamp:
Oct 18, 2022, 3:43:44 PM (4 years ago)
Author:
jorgev
Comment:

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  • Ticket #9970

    • Property Status new → reopened

  • Ticket #9970 – Description

    initial v2  
    88}}}
    99
    10 This error does not occur when decoding with libx264 and seems specific to running ffmpeg with `-hwaccel qsv`. Running ffmpeg with `-c:v h264_qsv` directly specified instead of hwaccel completes successuflly both when compiled with libmfx and libvpl. I unfortunately cannot immediately post the file which produces this error but I will work on trying to get one that does.
     10This error does not occur when decoding with libx264 and seems specific to running ffmpeg with `-hwaccel qsv`. Running ffmpeg with `-c:v h264_qsv` specified instead of hwaccel completes successuflly both when compiled with libmfx and libvpl.
    1111
    1212How to reproduce:
    1313
    14 Currently I'm only able to reproduce with a video file that is not public, but here is an example of the output shown by ffmpeg when run with this file. Fortunately with the sample file, the error reproduces fairly trivially:
     14Download the badfile-shorter.mp4 file and run ffmpeg (built with `--enable-libmfx`) like so:
    1515
    1616{{{
    17 % ffmpeg-libmfx -report -loglevel debug -hwaccel qsv -i badfile-short.mp4 -f null -
     17% ffmpeg -report -loglevel debug -hwaccel qsv -i badfile-shorter.mp4 -f null -
    1818...
    1919[h264_qsv @ 0x55b72b9d4a40] Error during QSV decoding.: undefined behavior (-16)