Hi List. I asked this on stackexchange, but never got an answer. ( https://video.stackexchange.com/q/33173/11453 )
I'm concatenating .ts chunks intended for an HLS player into a single .mp4 video. These chunks possess same stream properties, however, some chunks have audio stream shorter than video stream and in that case the resulting clip has audio artifacts when playing in Media Player Classic (MPC-HC). Workaround: demux video and audio streams into separate .m4a and .m4v files, concatenate them and then mux again. Goal: create single clips from .ts chunks *without intermediate files* Please help me find proper ffmpeg flags. I have created sample chunks (this repo) <https://github.com/basinilya/ffconcat-question> out of a freeware cartoon to demonstrate the problem. he chunk |516-x.ts| has audio stream 50ms shorter than video and in |517-x.ts| it's longer. Download: https://github.com/basinilya/ffconcat-question/archive/master.zip <https://github.com/basinilya/ffconcat-question/archive/master.zip> ffmpeg -y -i playlist-x.ffconcat -c copy result.mp4 The created `result.mp4` is played fine in `ffplay` or Windows Media Player, but there's a short silence in MPC-HC in the second half of the clip. Workaround script: ffmpeg -y -i 516-x.ts -an -c:v copy 516-x.m4v ffmpeg -y -i 516-x.ts -vn -c:a copy 516-x.m4a ffmpeg -y -i 517-x.ts -an -c:v copy 517-x.m4v ffmpeg -y -i 517-x.ts -vn -c:a copy 517-x.m4a ffmpeg -y -i playlist-x-a.ffconcat -c copy result.m4a ffmpeg -y -i playlist-x-v.ffconcat -c copy result.m4v ffmpeg -y -i result.m4v -i result.m4a -c copy result-good.mp4 _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
