The symptom for iOs playing this concatenated mp4 was initially good synchronization followed by an increasing loss of synchronization as the movie played, with audio going faster than video. In my case, I was also concatenating files, and found audio/video sync problems with iOs, but not with Windows (e.g., VLC media player showed no synchronization problems using the same mp4 file). I encountered a similar problem and found a solution that worked, at least for me. Where segments.txt consists of the names of the padded files.
Step 2 Concat ffmpeg -f concat -i segments.txt -c copy test.mov Generate segments with synced streams ffmpeg -y -ss 00:00:02.750 -i input.MOV -c copy -t 00:00:05.880 -avoid_negative_ts make_zero -fflags +genpts segment.MOV Step 1 Pad out the audio in each segment ffmpeg -i segment1.mov -af apad -c:v copy -shortest -avoid_negative_ts make_zero -fflags +genpts padded1.mov You can easily make your personal videos or movies with a lot of music, text, transitions, filter, overlays, and element by Filmora Video Editor.FFmpeg concat video and audio out of sync And it provides all common editing features which you may need like crop, copy, paste, split, speed for motion, etc. If you are a beginning user, this program helps you create videos in minutes. This is the best FFmpeg alternative that can provides simple and quick way to combine videos together.įilmora Video Editor & Filmora Video Editor for Mac is the best alternative to FFmpeg because this program is very easy to use by any type of users. If you suffer any problem to concatenate or merge or combine any video clips with FFmpeg, you can solve this problem by using Filmora Video Editor. How to Concatenate/Merge/Combine Videos with FFmpeg Alternative In this case, maybe you should try some easy and quick video editor to combine videos. When using FFmpeg to combine videos, many users can't have mentally satisfaction and think this is too complex using this program.
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