[FFmpeg-trac] #2591(avcodec:open): Feature Request: Add ability to use Quick Sync to transcode video files

FFmpeg trac at avcodec.org
Tue May 21 23:55:51 CEST 2013


#2591: Feature Request:  Add ability to use Quick Sync to transcode video files
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             Reporter:  zjacobs      |                    Owner:
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  h264 vaapi   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Rodeo):

 In my experience, Quick Sync is most useful when it handles both video
 decoding and encoding (much lower CPU usage, fan noise and power
 consumption) - and that's where Quick Sync will outperform x264 ultrafast
 by a large margin on consumer-grade hardware. Still, Quick Sync encode-
 only can also outperform ultrafast on just about any ultrabook, AFAIK.

 FWIW, there is ongoing to work to integrate QSV as a hwaccel in Libav:

 https://github.com/maximd33/libav/tree/qsv
 https://github.com/DonDiego/libav/tree/qsv

 Only H.264 decode is implemented so far, IIRC - haven't been following
 this very closely though.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2591#comment:7>
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