Video Distortion observed while streaming

We observed video distortion while streaming video using below pipeline.

Pipeline used -
pipeline.pipeline = gst_parse_launch (“v4l2src device=/dev/video0 ! video/x-h264, width=1920, height=720, framerate=30/1, stream-format=byte-stream ! h264parse ! omxh264dec ! queue max-size-time=400000000 ! vspfilter devfile-input=/dev/video11 devfile-output=/dev/video12 ! video/x-raw, format="BGRA", width=1920, height=720 ! kmssink driver-name=rcar-du connector-id=60 plane-id=34 sync=true”, &error);

When we analyzed the logs we see below logs from gstreamer -
16668 2024/12/03 22:21:52.545685 196.0205 82 RCAR AVB GSTR 476 log warn verbose 2 No corresponding frame found

  1. does this logs points to the distortion observed ?
  2. this log printed means is there any frame drop happening ?
  3. does it mean from source v4l2src device=/dev/video0 only we are getting the frame drop or it is happening at decoder side?