[FFmpeg-trac] #9377(undetermined:new): QSV MPEG2 => H264 transcode PSNR dropped by 32%
FFmpeg
trac at avcodec.org
Fri Oct 29 09:21:47 EEST 2021
#9377: QSV MPEG2 => H264 transcode PSNR dropped by 32%
-------------------------------------+-------------------------------------
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 wenbin,chen):
I add "-vsync passthrough" to command
{{{
ffmpeg -hwaccel qsv -qsv_device /dev/dri/renderD128 -c:v mpeg2_qsv -vsync
passthrough -i 1920x1080i_29.97_20mb_mpeg2_high.mpv -c:v h264_qsv -b:v
6000K -compression_level 7 -an -vframes 2400 -y 0024_HD17i7_1.0.h264
}}}
The psnr drop is unseen.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9377#comment:7>
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