adding an mp3 audio trace into an mp4 file

[Maurizio Palesi]

Hi,

My android application uses JCodec for generating an MP4 video. Unfortunately, JCodec does not allow the multiplexing of the video with an audio trace. Does MP4Parser allow to add an audio trace (in MP3) to an MP4 file? Looking at the previous posts, although I've found similar questions, I am still not sure whether it is possible or not.

In summary, I have an MP4 video and I would like to use MP4pareset for adding an audio trace (in MP3) to the MP4 video file. 

Thanks,

Maurizio

[Sebastian Annies]

I never tested it but Roman Elizarov provided the MP3TrackImpl class which will allow you to package MP3 files in MP4 containers.

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[Maurizio]

Many thanks Sebastian for your quick reply. If it is possible for you, could you post a simple example code on how to use this feature? I think that it is a very common task adding an mp3 audio track to a video so it would be useful having an example code. What do you think?

[sebastian.annies]

Have a look at the examples.  There is at least one that adds aac together with h264. Adding mp3 works very similar. Just the class name of the track is different. 

-------- Ursprüngliche Nachricht --------
Von: Maurizio <maurizi...@gmail.com>
Datum: 07.12.2013 19:17 (GMT+01:00)
An: mp4parser-...@googlegroups.com
Betreff: Re: adding an mp3 audio trace into an mp4 file

Many thanks Sebastian for your quick reply. If it is possible for you, could you post a simple example code on how to use this feature? I think that it is a very common task adding an mp3 audio track to a video so it would be useful having an example code. What do you think?

[Akhil Raj]

Movie movie = new Movie();

//adding audio tracks

MP3TrackImpl mp3tracks = new MP3TrackImpl(new FileDataSourceImpl(tempdir));
movie.addTrack(mp3tracks);

if you get the error, "Expected Start Word 0x7ff"

remove the errors using mp3agic

[Sebastian Annies]

Mp3 is not supported by most players.  My advice is to use aac as audio codec.
As I don't believe that mp3 in mp4 makes any sense I don't support it. Commercial agreements can of course convince me.
Bwst Regards,
Sebastian

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[Akhil Raj]

MP4parser is an amazing API , it makes merging videos very simple. 

Thank you Sebastian Annies for your work !

The main reason many want to use mp3 is because ,

They are developing Android applications , people generally download mp3 music on their phones.Many mobile users aren't familiar with the other formats.

If the application needs to change the audio of a .mp4 file on the mobile, then its more likely user would be using a mp3 audio file.

I understand your concern, mp3 with mp4 isn't the best option , but as app developers  we would target a bigger audience.

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[Sebastian Annies]

Well - if you are on 4.x you could use MediaCodec API to convert it.

2016-01-20 16:24 GMT+02:00 Akhil Raj <akhil...@gmail.com>:

MP4parser is an amazing API , it makes merging videos very simple. 

Thank you Sebastian Annies for your work !

The main reason many want to use mp3 is because ,

They are developing Android applications , people generally download mp3 music on their phones.Many mobile users aren't familiar with the other formats.

If the application needs to change the audio of a .mp4 file on the mobile, then its more likely user would be using a mp3 audio file.

I understand your concern, mp3 with mp4 isn't the best option , but as app developers  we would target a bigger audience.

  

On Saturday, December 7, 2013 at 8:02:56 PM UTC+5:30, Maurizio Palesi wrote:

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[Akhil Raj]

I have developed the android application that does add mp3 music to mp4. What i have experienced while testing is that , the video will not play in all the media players.

On players like VLC and MX  the video plays flawlessly but older versions of default google media player fails. i have tested with a group of people and found that about 80% of the android devices will play it but the rest will not. As a developer that's a risk I cant take. So i am gonna take your advice and convert the audio to acc format.

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[Sebastian Annies]

That is exactly what I was talking about. There isn't much support. ...

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