[FFmpeg-trac] #7030(avcodec:open): qsv in ffmpeg
FFmpeg
trac at avcodec.org
Tue Apr 24 10:22:01 EEST 2018
#7030: qsv in ffmpeg
-------------------------------------+-------------------------------------
Reporter: palich2000 | Owner:
Type: defect | Status: open
Priority: important | Component: avcodec
Version: git-master | Resolution:
Keywords: qsv | Blocked By:
regression | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by lizhong1008):
I've tried to reproduce it on ffmpeg-4.0 branch:
./ffmpeg -loglevel verbose -init_hw_device qsv=hw -i
/samba/anonymous/Videos/bbb_sunflower_1080p_30fps_normal.mp4 -c:v h264_qsv
-b:v 1000k test.mp4
The transcoding pipeline didn't crash, but reported "Encoder will work
with partial HW acceleration, Warning in encoder initialization: partial
acceleration (4)". The transcoding speed was very slow (about 20 fps), and
it shows the gpu usage is zero when use metrics_monitor to check GPU
usage.
It means software path was used instead of GPU accelerated.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7030#comment:18>
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