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I have 2 mp4 videos that fail to concatenate when using:
MP4Box -add 1.mp4 -cat 2.mp4 out.mp4
Is there a way to re-encode 2.mp4 so that the concat call will create a valid output? Possibly with ffmpeg? I can only re-encode one file and I want the concatenation to not do any encoding.
The error I currently get with these 2 files is:
[iso file] Box "minf" has 56 extra bytes Error appending 2.mp4: IsoMedia File is truncated
If you're comfortable using the .MKV file container format, see my answer here.
– Breakthrough – 2012-05-04T19:41:23.730thanks for the suggestion, i am stuck with the 1.mp4 though, thats coming from ios devices. i create 2.mp4 so if i get the file format right ahead of time everything should work without reencoding at concat time. – Scrooch – 2012-05-04T20:13:09.760
you might want to try using avidemux instead of MP4box than. Both programs work, but I've had a lot of success with avidemux.
– Breakthrough – 2012-05-04T20:17:55.353