How to merge two audio files on android using ffmpeg.

[gull]

Hi,

I want to combine two audio files on android. I did lot of search on google about this topic but  did not get desire result.

 Somebody told me that we can use ffmpeg library for this purpose. Can you help me or guide me that how i can

 combine two audio files on android using ffmpeg. I want to know about the APIS of  ffmpeg?. It is better if  you can give me any example.

Regards

Gull

 

[Samuel Audet]

The latest revisions of FFmpegFrameGrabber and FFmpegFrameRecorder can
be used to do that, e.g.:

FrameGrabber grabber = new FFmpegFrameGrabber("input.mp3");
grabber.start();
FrameRecorder recorder = new FFmpegFrameRecorder("output.mp3",
grabber.getAudioChannels());
recorder.setSampleFormat(grabber.getSampleFormat());
recorder.setSampleRate(grabber.getSampleRate());
recorder.start();
Frame frame;
while ((frame = grabber.grabFrame()) != null) {
recorder.record(frame);
}
recorder.stop();
grabber.stop();

But you'll have to build JavaCV or wait for the next release if you're
not inclined to recompile JavaCV yourself

Samuel

[Ahmad Gull Liaqat]

Thanks for your reply. I just want to clear two things.
1. Is it possible to mix the two audio files, i means not cocatination or merging the one audio file at the end of other file.  e.g i want to mix my voice with background music.

2. Can we mix two different format of audio files like .wav and .mp3.

if the above two steps  are possible in the new version of javacv then i am going to compile javacv for android.

Thanks,
gull

[Samuel Audet]

JavaCV won't help you much I'm afraid. Java Sound has that kind of
feature, e.g.:
http://javasolution.blogspot.jp/2007/05/mixing-two-audio-files-using-java-sound.html
But unfortunately, it doesn't seem like Java Sound is available for Android:
http://code.google.com/p/android/issues/detail?id=60

Samuel

[Samuel Audet]

Then again, it looks like avfilter has that kind of capabilities:
http://ffmpeg.org/libavfilter.html#amix
I don't know how to use its API, but I'm sure there are samples out there...

Samuel

[Ahmad Gull Liaqat]

Thanks Samuel.

[Ophir Levinson]

Hello gul ,
were you able to mix the audio's , can you please post some sample code ?
thanks
בתאריך יום שבת, 14 ביולי 2012 10:34:48 UTC+3, מאת gull:

[Vinod Morya]

Hi gull and samuel,

                                I am also working on a project like this, so if you have found any way to mix two audio files on android system them please share that. I will appreciate the support.

Thanks

vinod 

[Ahmad Gull Liaqat]

Hi,

I   changed my idea little bit and mixed the audio while playing both files at the same time. It can easily achieved by using android APIs.

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Best Regards,
Ahmad Gull Liaqat

[Samuel Audet]

Hi,

On 11/01/2013 03:19 PM, Vinod Morya wrote:
> I am also working on a project like
> this, so if you have found any way to mix two audio files on android
> system them please share that. I will appreciate the support.

Could you please define what you mean by "mix"?

Samuel

[Vinod Morya]

"Mix" means ..playing both the files at the same time...

Regards

Vinod Morya

+91-9971034666

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[Samuel Audet]

On 11/04/2013 01:31 AM, Vinod Morya wrote:
> "Mix" means ..playing both the files at the same time...

It looks like libavfilter supports that, but it's not exposed by a
high-level API like FFmpegFrameRecorder. You could open an new issue here:
http://code.google.com/p/javacv/issues/
To see how many people are interested such a feature, have a discussion
about how it should be implemented, etc...

Samuel