Gstreamer using nvcomposer to filesink hangs, but nvcomposer to nvoverlaysink works fine

[DaneLLL]

Hi,
We have verified it working and provided it in

openCV video writer to gstreamer appsrc

Hi, It only supports RGBA in source pad of nvcompositor, so you need to run like …! nvcompositor ! nvvidconv ! nvv4l2h264enc ! … Another reference of using nvcompositor:

Please add num-buffers=100 to v4l2src to terminate the pipeline after capturing 100 frames of each source, and check if the saved mp4 is valid.