open source mp4 muxer in java

Question

Is there any Open Source MP4 muxer/writer java project(source written in java, no native code) available?

I have H.264 & AAC raw/elementary streams stored seperate files. I want to mux them and get the .mp4 video file containing both Audio & Video.

Thanks in advance for your valuable suggestions.

'Mux' meaning, generating .mp4 container file by multiplexing h.264 video elementary stream & aac audio elementary stream recorded seperately. — mrsatish, Jan 02 '13 at 12:25

Sebastian Annies · Accepted Answer · 2013-01-27T18:28:04.973

3

Use the isoparser library it is as far as I know the only pure Java tool that can mux AAC and H264. It also provides an example for precisely the use case you are describing.

Full disclosure: I am the creator of the library.

 AACTrackImpl audio= new AACTrackImpl(new FileInputStream("sample.aac").getChannel());
 H264TrackImpl video = new H264TrackImpl(new FileInputStream("sample.h264"));
 Movie m = new Movie();
 m.addTrack(video);
 m.addTrack(audio);

 IsoFile out = new DefaultMp4Builder().build(m);
 FileOutputStream fos = new FileOutputStream(new File("output.mp4"));
 out.getBox(fos.getChannel());
 fos.close();

edited Jan 27 '13 at 18:28

answered Jan 27 '13 at 17:13

Sebastian Annies

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Thanks a lot. I tried using it for android but faced an issue, which I have posted on google discussion groups (https://groups.google.com/forum/?hl=en&fromgroups=#!topic/mp4parser-discussion/a9RbWVs5Kgs). – mrsatish Jan 29 '13 at 05:08
Sebastian Annies, your project will be highly useful for Android4.1+ as no mp4 filewriter APIs are present for raw media encoders supported by Jellibean onwards. (http://stackoverflow.com/questions/14493627/mp4-filewriter-in-android-4-1) ... – mrsatish Jan 29 '13 at 06:01

score 1 · Answer 2 · answered Feb 13 '14 at 17:57

Previous sample from isoparser cannot be compiled with latest sources. I`m using folliwing code to mux row h264(from android MediaCodec) into .mp4 container

    H264TrackImpl video;
    try {
        video = new H264TrackImpl(new FileDataSourceImpl("/home/aod/tmp/rec_1392309584754.h264"), "eng", 9, 1);
        Movie m = new Movie();
        m.addTrack(video);

        BasicContainer out = (BasicContainer) new DefaultMp4Builder().build(m);
        FileOutputStream fos = new FileOutputStream(new File("/home/aod/tmp/output.mp4"));
        out.writeContainer(fos.getChannel());
        fos.flush();                        
        fos.close();
    } catch ( IOException e) {
        e.printStackTrace();
    }

I used the same method, but the problem is that h264 plays too fast. And after muxing it into mp4, it still plays too fast. Have you encountered this problem? — Nazar Merza, Feb 13 '14 at 19:42
I did. http://stackoverflow.com/questions/38738890/what-governs-playback-speed-when-encoding-with-androids-mediacodec-mp4parser — FuzzyAmi, Aug 03 '16 at 09:19

open source mp4 muxer in java

2 Answers2