Comments on: Extracting AMR Audio from Android 3GP Files

By: Mike

Mike — Thu, 13 Jan 2011 21:46:14 +0000

just a quick note – the IsoParser code has been moved to GoogleCode here

http://code.google.com/p/mp4parser/source/checkout

By: Alexey

Alexey — Thu, 12 Nov 2009 13:28:28 +0000

You can use simple way to extract AMR from 3GP container on Android.
I just describe it in our android-blog: http://android.amberfog.com/?p=181

By: Dave E

Dave E — Tue, 29 Sep 2009 00:00:36 +0000

I’m trying to create a 30 second sample mp4 sample from an mp4 file. Has anyone been able to use IsoParser to do this?

By: Sam Joseph

Sam Joseph — Tue, 18 Aug 2009 20:39:45 +0000

Well I cracked and installed Maven. Turns out it wasn’t so hard for OSX:

http://maven2.darwinports.com/

In fact all I typed was:

sudo port install maven2
svn checkout https://contributions.coremedia.com/svn/isobox4j/trunk isobox4j
cd isobox4j/isoparser
mvn install

of course – then maven downloaded like a 100 different libraries …., but everything worked after that.

However I also subsequently found it seems like you can record audio on the android directly into the AMR format, so maybe I didn’t need isobox after all

By: Sam Joseph

Sam Joseph — Thu, 13 Aug 2009 03:59:43 +0000

Sebestian said there were binaries, but I can’t find any that include isobox4j.jar Could anyone post a link to just that?

I guess the only solution at the moment is to try to understand how maven works … Any reason the isobox.jar couldn’t be put up by itself. I’m not familiar with Maven and really want to devote my time on working out how to convert AMR to MP3 …

Many thanks in advance
CHEERS> SAM

By: Pramod

Pramod — Fri, 05 Jun 2009 09:57:23 +0000

HI Ben,
Thanks for such a nice article to extract AMR from Android 3gp file. Just one query from my side. Can I mix two Andriod 3gp file using the isoParser. Any code sample will be a great help

Thanks
Pramod
Phoenytunes.com
(Mobisoft Telesolutions Pvt Ltd)

By: Sebastian Annies

Sebastian Annies — Wed, 27 May 2009 14:52:12 +0000

Yes we have binaries and a maven repository: https://contributions.coremedia.com/svn/isobox4j/maven/repo/

By: Ben

Ben — Mon, 25 May 2009 23:26:31 +0000

Andrea,
You should be able to build the isobox4j project using Maven. I’m not sure if they have a binary that they distribute.

By: Andrea

Andrea — Mon, 25 May 2009 14:33:01 +0000

Hi Ben,
Your code now works!!!
I have the .amr file. Now my problem is how can I access to the sample audio in file .amr ?
I mean, I need to access to the audio samples to implemet an algorithm which discriminate if in my file there’s or not silence and I don’t know how to get the audio data.

Do you know if there is some specific function or library or .jar that could help me ?
Thanks!!!

Andrea

By: Andrea

Andrea — Mon, 25 May 2009 07:04:01 +0000

Hi Ben,
Thanks for your replying….Do you have any idea of where I can find the isobox4j .jar ?
I’ve tried all your links but I cannot find it….
Could you please tell where I can get it ?

Thanks!