Android - merge two MP4 files

---

Does anybody know about way to merge two MP4 video files directly in the phone? i've tried cat in Terminal emulator, it joined the files, but than the playbackl stops after the first file contained in the result, quite logically.
Anybody has some other way?

I know that mencoder can join two clips, but I can't find android binary for it.

Hello,

Have you found how it can be done?

Regards,
Ruslan

i thinkg you will remove head from 2nd-file before merge

Wouldn't it require the removal of the MP4 headers though?

I tryied it:
1. Create new file.mp4
2. Copy first.mp4 into file.mp4 (A read full bytes from file and write it)
3. Repeat point 2 fot second.mp4

Yes, it is stupid.. But this file will be played by Windows Media Player(I tested it).

So, How can I undestand what kind of bytes is header of second.mp4?
Does mp4 contains special separator?

I am afraid, that it simply stops playing the final product at "the right time", marked by header in the beginning of the file (=first clip). I think that to merge them without reencoding, we would have to "clip" the second header & redo the first one, to match the total length.

May be do you know some Android plugins(I mean .jar files e.g. ) witch can merge mp4 files or 3gp..?

I know, that mencoder can join two MP4 files quite easily. But I can't find any version working on Android.

If anyone found out a solution please share it here

no, nobody did I believe. To merge two MP4s you need to modify at least the header, probably even more. What we need is ffmpeg, which can be run in the terminal.