Android Question Creating AMR audio file.

[Juzer Hussain]

Hi Freinds,

I am trying to record audio in AMR file since long.I am not able to find anything in forum.I came across an EXE which converts MP3, WAV file into AMR. Is it at all possible to use it in app to convert MP3 file to AMR file.

In Automatic App(Call recording App) audio files are stored in AMR format only.

Pls advice.

Thanks
Juzer

 

[DonManfred]

You already asked this. Not long ago btw

 

[moster67]

Should be possible with my ffmpegencoder
https://www.b4x.com/android/forum/threads/b4a-ffmpegencoder.70778/

 

[JohnC]

If you want to record audio and have it create an AMR file, one of the audio recorder libs in this forum can do that (because I used it in a previous project) - and I believe that this is the audiorecorder lib that can do that:

https://www.b4x.com/android/forum/threads/audiorecord-library.13993/

(just examine the encoding and fileformat settings)

NOTE: if you want to create an AMR file that will play on both Android and iOS devices, then you must create a "narrow-band" (not wide band) AMR file.

 

[DonManfred]

You can try this Library. It is a quick wrap for this Github project. It is fully untested!
Note that you need special permissions. You need to start with initialize and give the recording PATH.

in regard to @JohnC comment:

recorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_NB);
        recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

Looks like it is using the right format i guess.

 

[Juzer Hussain]

Many Thanks Monster67, JohnC, DonManfred
I will give this a try.

Juzer

 

[JohnC]

EXE files only run on Windows PC's. They will not run on Android.

If you want to convert an already existing MP3 file to AMR, then you should use the ffmpegencoder as mentioned in post #3.

 

[Juzer Hussain]

Hi JohnC
I would like create AMR file directly after recording.
I am using audio streamer to create WAV file.
There is no way to change encoding and file format in above jar file as it is a library.
Juzer

 

[JohnC]

Then I would use Moster67's wrapper in post #3. It's a little bit of a learning curve, but will do exactly what you need (WAV to AMR).

 

[Juzer Hussain]

Hi,

I used Liblame library to convert WAV to MP3. In android 4.1.2 it works fine but in ver 8.1.1 the app crashes while encoding.I am using targetSDKversion-26.
Is there any workaround or any other library.

Pls advice.

Thanks
Juzer

 

[JohnC]

Are you using Moster67's wrapper in post #3?

I have a tester of one of my apps that convert wav to wp3 on his pixel running 8.x without any issues.

 

[Juzer Hussain]

No I am using Liblame library by warwaound https://www.b4x.com/android/forum/threads/lib-liblame-mp3-encoder-decoder.22969/

 

[JohnC]

I believe there is issues with that lib in which the target sdk can't be set higher then 22, but google playstore requires 26:

https://www.b4x.com/android/forum/threads/lib-liblame-unsatisfiedlinkerror-dlopen.78814/#post-499587

So, even though Moster67's wrapper has a cost, it should do what you are looking for.