Concatenating m4s files with FFMPEG

[adlkeod]

I'm trying to concat m4s files into an mp4 file and this is the message ffmpeg gives:

[mov,mp4,m4a,3gp,3g2,mj2 @ 000000000012a1c0] Format mov,mp4,m4a,3gp,3g2,mj2 dete
cted only with low score of 1, misdetection possible!
[mov,mp4,m4a,3gp,3g2,mj2 @ 000000000012a1c0] moov atom not found
[concat @ 0000000000120500] Impossible to open 'segment-0.mp4'
segments.txt: Invalid data found when processing input

I'm using the following command:

ffmpeg.exe -f concat -i segments.txt video.mp4

The segments.txt file looks like this:

file 'segment-0.mp4'
file 'segment-1.m4s'
file 'segment-2.m4s'
file 'segment-3.m4s'
file 'segment-4.m4s'
file 'segment-5.m4s'

All of the segments, txt file, and ffmpeg files are in the same directory. All of the information I found regarding that error message wasn't applicable to my situation. Any help would be appreciated.

[sneaker]

Are you using an old version of ffmpeg? Are you sure "segment-0.mp4" is the correct file and not broken? Can you post the download link?


P.S.: I think you are supposed to use ffmpeg's "concat protocol" and not the "concat demuxer" but it doesn't explain the error message.

[rodrigez]

Use Binary Concatenation for Fragmented MP4 (Recommended for fMP4)

If your .m4s files are part of a fragmented MP4 stream, try merging them using MP4Box instead of FFmpeg: