The merge occur without any errors but the audio is still unsynch I loose the audio on the 60 FPS files, at this point i thought it was an audio problem so i tried to "unify" the audio codec of all mp4 files like this : ffmpeg -i input.mp4 -acodec SOME_AUDIO_TYPE -vcodec copy out.mp4 When trying the "mp4 to mpg then merge" : ffmpeg -i 1.mp4 -qscale 0 1.mpgĬat 1.mpg 2.mpg | ffmpeg -f mpeg -i -qscale 0 -vcodec mpeg4 output.mp4 The audio and video aren't synch anymore and the video sometimes freezes. When trying this method : :: Create File Listįfmpeg -f concat -i mylist.txt -c copy output.mp4 To merge the files i have been using all the solutions in this post I tried to modify the frame rate of the videos (30 to 60 or 60 to 30), but it reduces the quality too much. Most of the time the audio is not in sync with the video. When I merge the files, there always seems to be a problem with the output.
I have been trying to merge some mp4 files with different frame rates without success.
0 kommentar(er)
