What is ffmpeg's UDP protocol?

Question

What is ffmpeg\'s UDP protocol ?

Here is example from another question

ffmpeg -i udp://localhost:1234 -vcodec copy output.mp4
Or try:

ffmpeg -i rtp://lo         


        

Answer 1

Apparently it is RTSP, see libavformat/rtsp.c and libavformat/udp.c in the source.