I’ve also seen something similar since R32.4. What if you :
- use omxh264dec instead of nvv4l2decoder ?
- or remove h264parse before nvv4l2decoder ?
- or use double h264parse conversion through avc format:
... ! h264parse ! video/x-h264, stream-format=avc ! h264parse ! video/x-h264, stream-format=byte-stream ! nvv4l2decoder ! ...
?