Thanks for your reply.
I am using deepstream-test3 with the RTSP Camera.
yesterday I was trying with MP4 file and it was fine.
but when it comes to RTSP after a minute we are getting the above error and app almost hang stage then we need to kill the exe in task manager.
kind Note:
there is a TYPO error in deepstream-test3 python sample code like below
MUXER_OUTPUT_WIDTH=1920
MUXER_OUTPUT_HEIGHT=80 //should be 1080