I want to get duration in millisecond of a m4a file in java, how to do this ?
I tried code below
public static long getAudioLength(File file) throws IOException, UnsupportedAudioFileException {
AudioFileFormat fileFormat = AudioSystem.getAudioFileFormat(file);
long frames = fileFormat.getFrameLength();
float frameRate = fileFormat.getFormat().getFrameRate();
return (long) (frames / frameRate * 1000);
}
It throws:
javax.sound.sampled.UnsupportedAudioFileException: File of unsupported format
at java.desktop/javax.sound.sampled.AudioSystem.getAudioFileFormat(AudioSystem.java:980) ~[na:na]
at getAudioLength(AudioUtils.java:17) ~[classes/:na]
I am using JDK 11
Result of javax.sound.sampled.AudioSystem#getAudioFileReaders(), seems JDK lacks of a suitable default reader.
[com.sun.media.sound.WaveExtensibleFileReader@75cf5965,
com.sun.media.sound.WaveFloatFileReader@309ae93,
com.sun.media.sound.WaveFileReader@727c801f,
com.sun.media.sound.SoftMidiAudioFileReader@84d1378,
com.sun.media.sound.AuFileReader@7c67765,
com.sun.media.sound.AiffFileReader@49753c38]
