Trim an MP3 file using Java

In this tutorial, we explore how to trim an MP3 flie using the java. It is one of the simple and easily understandable concept in the Java. By using the code we are going to understand this concept. It refers to manipulate the audio data to remove a portion in it.

The code is below:

public class CuttingAudioInputStream extends AudioInputStream {
    private AudioInputStream delegate;

    public CuttingAudioInputStream(AudioInputStream delegate) {
        this.delegate = delegate;
    }

    @Override
    public long getFrameLength() {
        // Lie about the stream length (e.g., 44100 samples)
        return Math.min(delegate.getFrameLength(), 44100);
    }

    // Implement other methods as needed
}

This approach may impact audio quality, especially if the source/destination is a lossy format like MP3.

Use an external tool like LAME (a popular MP3 encoder) from Java.

LAME allows you to cut audio in blocks, but precise cuts are limited to a single frame