public void convertWavToMP3(String filepathToConvert, String convertedFilePath) {
Encoder wavToMp3Converter = new Encoder();
EncodingAttributes att = new EncodingAttributes();
AudioAttributes audioAtt = new AudioAttributes();
String codecs[] = null;
String formats[] = null;
try {
formats = wavToMp3Converter.getSupportedDecodingFormats();
} catch (EncoderException e) {
e.printStackTrace();
}
try {
codecs = wavToMp3Converter.getAudioEncoders();
} catch (EncoderException e) {
e.printStackTrace();
}
int mp3CodecIndex = -1;
/*for(int i=codecs.length; i>0; i--)
{
if(codecs[i].compareTo("") == 0)
{
mp3CodecIndex = i;
break;
}
}*/
audioAtt.setVolume(255);
audioAtt.setSamplingRate(new Integer(this.getWavTagReader().sampleRate));
audioAtt.setChannels(new Integer(wavTagReader.numOfChannels));
audioAtt.setBitRate(
new Integer(
this.wavTagReader.sampleRate
* this.wavTagReader.bitsPerSample
* this.wavTagReader.numOfChannels));
audioAtt.setCodec("libmp3lame");
att.setAudioAttributes(audioAtt);
att.setFormat("mp3");
att.setOffset(new Float((float) 0));
att.setVideoAttributes(null);
// att.setDuration(new Float((float)100));
try {
wavToMp3Converter.encode(
new File(filepathToConvert),
new File(convertedFilePath),
att,
new EncoderProgressListener() {
@Override
public void sourceInfo(MultimediaInfo multimediaInfo) {}
@Override
public void progress(int i) {}
@Override
public void message(String s) {}
});
} catch (EncoderException e) {
e.getMessage();
e.getCause();
}
}
@Test
public void getInfo() throws InputFormatException, EncoderException {
Encoder encoder = new Encoder();
MultimediaInfo info = encoder.getInfo(new File("src/test/resources/sample.mp4"));
System.out.println(info.getFormat());
System.out.println(info.getAudio().getDecoder());
System.out.println(info.getVideo().getDecoder());
}
/**
* Decodes an audio file (mp3, flac, wav, etc. everything which can be decoded by ffmpeg) to a
* downsampled wav file.
*
* @param input an audio file which will be decoded to wav
* @param wavoutput the output wav file
* @param samplerate the samplerate of the output wav.
* @throws IllegalArgumentException
* @throws InputFormatException
* @throws EncoderException
*/
public static void decodeAudioFile(File input, File wavoutput, int samplerate)
throws IllegalArgumentException, InputFormatException, EncoderException {
assert wavoutput.getName().endsWith(".wav");
AudioAttributes audio = new AudioAttributes();
audio.setCodec("pcm_s16le");
audio.setChannels(Integer.valueOf(1));
audio.setSamplingRate(new Integer(samplerate));
EncodingAttributes attrs = new EncodingAttributes();
attrs.setFormat("wav");
attrs.setAudioAttributes(audio);
Encoder encoder = new Encoder();
encoder.encode(input, wavoutput, attrs);
}
/**
* Converts WAV file to MP3
*
* @param filePath path on which MP3 file will be saved
*/
public void convertWavToMP3(String filePath) {
String codecs[];
String formats[];
Encoder encoder = new Encoder();
EncodingAttributes att = new EncodingAttributes();
try {
codecs = encoder.getAudioEncoders();
formats = encoder.getSupportedEncodingFormats();
AudioAttributes audioAtt = new AudioAttributes();
audioAtt.setBitRate(
this.wavTagReader.getByteRate()
* this.wavTagReader.getBitsPerSample()
* this.wavTagReader.getNumOfChannels());
audioAtt.setChannels(Integer.valueOf(this.wavTagReader.getNumOfChannels()));
audioAtt.setSamplingRate(this.wavTagReader.getSampleRate());
audioAtt.setVolume(255);
audioAtt.setCodec(AudioAttributes.DIRECT_STREAM_COPY);
att.setAudioAttributes(audioAtt);
att.setFormat("mp3");
encoder.encode(this.file, new File(filePath), att);
} catch (EncoderException e) {
e.printStackTrace();
}
}