Decoder h264_qsv [H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration)]:
    General capabilities: dr1 delay avoidprobe hybrid 
    Threading capabilities: none
    Supported hardware devices: qsv 
    Supported pixel formats: nv12 p010le qsv
h264_qsv AVOptions:
  -async_depth       <int>        .D.V..... Internal parallelization depth, the higher the value the higher the latency. (from 1 to INT_MAX) (default 4)


