[FFmpeg-trac] #9377(undetermined:new): QSV MPEG2 => H264 transcode PSNR dropped by 32%
FFmpeg
trac at avcodec.org
Thu Oct 28 15:02:15 EEST 2021
#9377: QSV MPEG2 => H264 transcode PSNR dropped by 32%
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Reporter: eero-t | Owner: (none)
Type: defect | Status: new
Priority: normal | Component:
| undetermined
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by eero-t):
Note: the "A decode call did not consume any data: expect more data at
input" messages in FFmpeg output are there also before PSNR regression,
they are not new.
FYI: When asking FFmpeg to calculate SSIM between the original and
transcoded file instead of PSNR, the regression is ~5%. Performance is
not impacted.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9377#comment:5>
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