Is there an ffmpeg parameter to force infinite loop during playback? Please note I am not referring to loop the input file. So basically the input file is e.g. 4 seconds but I want the output file to loop infinitely (or e.g. 100 times) these 4 seconds without actually creating a 400 second file. The file size should be of the size of the 4 seconds but it will play 100 times. I am looking for something like an internal mp4 loop flag to force the player to loop (I appreciate the player has its own looping settings).