Video file reading by cv::VideoCapture and Gstreamer is slow

Hi,
Please try

  1. Use nvv4l2decoder and set enable-max-performance.
  2. Run hardware converter(VIC engine) at max clock:
    Nvvideoconvert issue, nvvideoconvert in DS4 is better than Ds5? - #3 by DaneLLL
  3. Can execute sudo tegrastasts to get syatem status and check which hardware engine caps performance