I need your help for the below query:

Query:

Is there any way of getting following info of an audio file.

Sample rate, Channel, Bitrate of an audio file.

For extracting bitrate, "MediaMetadataRetriever" API is available (METADATA_KEY_BITRATE).

Please suggest if it can be done using any android API.

I want to extract these using Android API programmactically :

Sampling rate, Quantization, Channel of an input audio file.

Please help on this.

Thanks in advance.

解决方案

This can be done using MeiaExtractor like this:

MediaExtractor mex = new MediaExtractor();

try {

mex.setDataSource(path);// the adresss location of the sound on sdcard.

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

MediaFormat mf = mex.getTrackFormat(0);

int bitRate = mf.getInteger(MediaFormat.KEY_BIT_RATE);

int sampleRate = mf.getInteger(MediaFormat.KEY_SAMPLE_RATE);

int channelCount = mf.getInteger(MediaFormat.KEY_CHANNEL_COUNT);