How can I merge or concatenate two or more MP4 files creating another MP4 file?

Question

How can I concatenate or merge 2 or more MP4 files, in a final output MP4 file also?

I have tried in the DOS window to use the COPY command (I have read it somewhere) but it doesn't function well.

Answer 1

I'd reccomend usind ffmpeg, which is available for Mac OS X, Linux and Windows.

Here's a good examaple on how to concatenate two movies: http://www.ffmpeg.org/faq.html#SEC27

In the last step, you just need to make sure you make an MP4 container, for the resulting file.

Answer 2

MP4Box can do this, though you might want to use a GUI for it like YAMB or My MP4Box GUI. (N.B.: It's not my program personally, that's just the name.) MP4Box binaries for Windows are available from this site.

Answer 3

You would need to use some kind of video editor or comparable program. I've had good luck with avidemux for simple tasks like this.

Answer 4

Update: Just checked avidemux as I had it installed, after reading that other answer. It’s what you are looking for (didn’t think it can do MP4 because of its name…).

I think VirtualDubMod is mp4-capable, I didn’t use it though so I dunno for sure.

You may want to check out MeGUI. It’s a rather complex and feature-rich app and tools.

The tool for embedding in a container (mp4 in your case) is called muxer, that one can probably not concatenate them though.

You can use it in combination with VirtualDub. Virtualdub to concatenate the video streams, and the muxer to make it an mp4 again (without having to reencode).

Answer 5

I'm doing it with mencoder, after having converted them to avi with ffmpeg

here's a simple script, assuming you have 15 files, named 01.mp4 ... 15.mp4

#!/bin/bash
for i in `seq 1 15`;
do
if [ $i -lt 10 ]; then
    j="0$i"
else
    j="$i"
fi

echo converting file $j.avi
ffmpeg -i $j.mp4 $j.avi

echo adding file $j.avi to list
z="$z $j.avi"
done 

echo doing append
mencoder -oac copy -ovc copy $z -o all.avi

cheers