#9811: filter 'zscale=transfer=linear' fails with "code 2050: active window must
be positive"
-------------------------------------+------------------------------------
Reporter: rminnema | Owner: (none)
Type: defect | Status: reopened
Priority: normal | Component: avfilter
Version: git-master | Resolution:
Keywords: zimg,zscale | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+------------------------------------
Changes (by BoKK):
* keywords: zimg,zscale,transfer => zimg,zscale
* status: closed => reopened
* resolution: fixed =>
Comment:
It seems something is happening again, or at least something that seems
related to zscale and threads used, somehow.
I'm reopening this because I am guessing it's related so I see no point in
opening a separate report for now.
{{{
ffmpeg -i test.mkv -vf zscale=size=1920x1080 -c:0 libx265 test_out.mkv >>
ffmpeg.exe crash
ffmpeg -i test.mkv -c:0 libx265 test_out.mkv >>
OK
ffmpeg -i test.mkv -vf scale=1920:1080 -c:0 libx265 test_out.mkv >>
OK
Crash error is 'Exception Processing Message 0xc0000005 – Unexpected
parameters'
}}}
What makes it weirder this time is... it doesn't always happen.
This would point to a software or hardware error but then it should also
happen when zscale is not used and that's not happening.
- Using zscale=scale > Error ''most of the times''.
- NOT using zscale > No error, ever.
To make it weirder, what mitigated the problem before, setting ''-threads
2'', achieves just the opposite -- error now appear always.
- Using zscale=scale > Error ~90% of the times.
- Using zscale=scale + -threads 2 > Error 100% of the times.
If I had to guess, I'd say this behaviour looks like some floating point
rounding error... but I'm no programmer so that's just what it is, a
guess.
I'm uploading a test file, 'test_file_BOKK_20220701.mkv'.
I suppose few people will be able to reproduce the issue... but it is
happening nonetheless.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9811#comment:17>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker_______________________________________________
FFmpeg-trac mailing list
FFmpeg-trac@avcodec.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-trac
To unsubscribe, visit link above, or email
ffmpeg-trac-requ...@ffmpeg.org with subject "unsubscribe".
