How to check the Аudio Length from Java App

To check the Аudio Length in a Java Spring Boot application, you can use the following open source libraries or tools.

1. Using AudioFileFormat

THIS OPTION DID NOT WORK FOR ME – It throws IOException: mark/reset not supported. You can use the javax.sound.sampled.AudioFileFormat class to get the audio length.

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioFileFormat;

public class AudioLengthChecker {
    public static void main(String[] args) throws Exception {
        // Load the audio file
        AudioInputStream ais = AudioSystem.getAudioInputStream(new FileInputStream("path_to_your_audio_file.wav"));

        // Get the audio format
        AudioFormat af = ais.getFormat();

        // Calculate the length in milliseconds
        int lengthInMs = (int) ais.getFrameLength() * af.getFrameSize();

        // Convert the length to seconds
        int lengthInSeconds = lengthInMs / 1000;

        System.out.println("Audio length: " + lengthInSeconds + " seconds");
    }
}

2. Using FFmpeg


You could use some library wrapper of Ffmpeg. It is a powerful tool for video, but audio also. Check out this stack overflow issue:

https://stackoverflow.com/questions/6239350/how-to-extract-duration-time-from-ffmpeg-output

I’ve used this tool before and you could read more here: https://programtom.com/dev/?s=Ffmpeg. I’ve also coded some wrapper apps: https://programtom.com/dev/product/video-converter-tool/

3 Using a third-party library jaudiotagger

I’ve used the jaudiotagger library. Here is the maven dependency:

<dependency>
    <groupId>net.jthink</groupId>
    <artifactId>jaudiotagger</artifactId>
    <version>3.0.1</version>
</dependency>

And here is the working code:

try {
    AudioFile audioMetadata = AudioFileIO.read(new File(s));
    System.out.println("Audio Metadata {} " + audioMetadata.displayStructureAsPlainText());
    System.out.println(audioMetadata.getAudioHeader().getTrackLength());
    System.out.println(audioMetadata.getAudioHeader().getPreciseTrackLength());
    System.out.println(audioMetadata.getAudioHeader().getBitRate());
} catch (CannotReadException | IOException | TagException | ReadOnlyFileException
         | InvalidAudioFrameException e) {
    throw new RuntimeException("Error while getting metadata for audio file. Error " + e.getLocalizedMessage());
}

Note that the above code snippets are just examples and may need to be modified based on your specific requirements.