Le decadi 30 frimaire, an CCXXV, black copper a écrit : > I have MP4 source videos, that contain: > > video: H264 > audio: G.711 (mulaw) > > I want to use concatenation on source videos to get one MP4 file. > > I used concat filter by first creating a list: mylist.txt file as follows: > > file 'v1.mp4' > file 'v2.mp4' > file 'v3.mp4' > > then envoked ffmpeg command like this: > > ffmpeg -f concat -i mylist.txt -c copy op.mp4 -y > > This worked only with files that are mp41 compatible. > > With mp42 files that I mentioned above, I get this error: > > [mp4 @ 0x24ca780] Could not find tag for codec pcm_mulaw in stream #1, > codec not currently supported in container > Could not write header for output file #0 (incorrect codec parameters ?): > Invalid argument
This message is about output, not input. Please test remuxing a single file, without concat, using the first file in each sequence: ffmpeg -i input.mp4 -c copy output.mp4 >> yes, its giving the same error... If, as I suspect, it fails the same way, your problem is exactly what is written in the second line of the error message. Also, note that you posted on the wrong mailing-list. Adding ffmpeg-user as recipient, please reply only there. >> did that, awaiting moderator approval - thanks,
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