Fast video playback in decoding interlaced H264 stream via nvv4l2decoder

On r32.2.1, We observe an issue in gstreamer nvv4l2decoder plugin. It is specific to decoding interlaced video files.

1 Download 1920x1080i video files in:
https://www.hdpvrcapture.com/wordpress/?page_id=97
2 Run

$ gst-launch-1.0 filesrc location=_FILE_NAME_ ! qtdemux ! h264parse ! <b>omxh264dec</b> ! nvoverlaysink //Normal playback speed
$ gst-launch-1.0 filesrc location=_FILE_NAME_ ! qtdemux ! h264parse ! <b>nvv4l2decoder</b> ! nvoverlaysink //Fast playback speed

We are checking it. Will update once we have new findings. Thanks.

Please try the patch in
https://devtalk.nvidia.com/default/topic/1056596/jetson-nano/omxh264dec-nvv4l2decoder-34-7mb-per-minute-memory-leak-crash-when-decoding-interlaced-h264-video/post/5404539/#5404539