[FFmpeg-trac] #6853(undetermined:new): Videotoolbox with multiple devices

FFmpeg trac at avcodec.org
Wed Nov 22 23:08:10 EET 2017


#6853: Videotoolbox with multiple devices
-------------------------------------+-------------------------------------
             Reporter:  MrFreddy78   |                     Type:
               Status:  new          |  enhancement
            Component:               |                 Priority:  normal
  undetermined                       |                  Version:
             Keywords:               |  unspecified
  videotoolbox device                |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 I'm using ffmpeg git on MacOS 10.13.1

 In my system, I have a iGPU (HD630) and an AMD Vega64.
 I can use videotoolbox to encode video on both GPU's but can't select
 which one to use.
 When iGPU is enabled, this one is always used.
 But when I disable the iGPU in bios, the Vega64 card is used.

 I've encoded several video's and for h264, I want to use the HD630 iGPU
 because it produces better quality. But for HEVC, the Vega64 produces much
 beter quality and is 4 times faster.

 So, it would be very nice if it is possible to switch between the
 available GPUS.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6853>
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