After a couple of hours of researches, I did not managed to make it work with this approach. However, using -live_start_index did it. So here is the answer, for those who would be struggling with this too: ffmpeg -live_start_index 0 -i input.m3u8 -c copy -ss 10 -t 10 -f mp4 output.mp4 -- Sent from: http://www.ffmpeg-archive.org/