Decoder mpeg2_qsv [MPEG-2 video (Intel Quick Sync Video acceleration)]:
    General capabilities: dr1 delay avoidprobe hybrid 
    Threading capabilities: none
    Supported hardware devices: qsv 
    Supported pixel formats: nv12 qsv
mpeg2_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)


