I managed to mux both audio and video streams and save them into a single MP4 file using GStreamer. For example:

gst-launch-1.0 -v 
  videotestsrc ! videoconvert ! x264enc ! h264parse ! mpegtsmux name=mux ! filesink location=output.mp4 
  audiotestsrc ! audioconvert ! audioresample ! avenc_aac ! aacparse ! mux.

However, when I attempted to split this process into two parts – sender and receiver – I encountered issues with the receiver part. Here’s how I’m sending it:

Sender:

gst-launch-1.0 -v 
  videotestsrc ! videoconvert ! x264enc ! h264parse ! mpegtsmux name=mux ! udpsink host=127.0.0.1 port=5000 
  audiotestsrc ! audioconvert ! audioresample ! avenc_aac ! aacparse ! mux.

I also tried to simplify it by just sending either the video or audio stream, but didn’t manage to get it to work hence I am here hoping someone will help… Any guidance on how to properly set up the receiver would be greatly appreciated. Thank you!

• Note: The process involves streaming, and it’s important for me to splitmuxsink the data into smaller MP4 files. Additionally, I don’t necessarily need to use udpsink, as long as the data can be transferred over the network.”

I have tried various suggestions since then. For example, below is one attempt where I tested sending only video:

gst-launch-1.0 -v videotestsrc ! videoconvert ! x264enc ! h264parse ! mpegtsmux name=mux ! udpsink host=127.0.0.1 port=5000

For the receiver part, something like this:

gst-launch-1.0 -v -e  udpsrc port=5000 caps="application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264" ! rtpjitterbuffer ! rtph264depay ! h264parse ! mp4mux ! filesink location=/tmp/received_video.mp4

I added -e to include end-of-stream (EOS) signaling, also tried switching between different muxers. However, some attempts resulted in the generated MP4 file having a size of 0 bytes, while others produced files with content that were unable to play.