Video and waveform using bytedeco JavaCV API working with FFmpeg. Signal is a library that have ready to use components.
For video and audio in a player (a simple panel), use Media with VideoView.
To generate piece of waveform use this class and listener like this:
SignalData signalData = new SignalData();
signalData.addSignalListener(new SignalListener(){
@Override
public void getSignal(SignalImageEvent event) {
try {
if(event.hasWaveform()){
ImageIO.write(event.getWaveformImage(), "png", new File("your/path/to/png"));
}
} catch (IOException ex) {
Logger.getLogger(Signal.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
signalData.setMediaFile("your/path/to/media/to/view/in/the/waveform");
signalData.get(0L, 10000L, 800, 200, ImageMode.WaveformOnly, SearchMode.Absolute);The last function 'get' has the following features:
| ABSOLUTE | RELATIVE |
|---|---|
| msStart, msStop, imageWidth, imageHeight | msStartRel, msDuration, imageWidth, imageHeight |
If RELATIVE, 'msStartRel' is calculated from last 'msStart' position.
To generate piece of spectrogram use this class and listener like this:
SignalData signalData = new SignalData();
signalData.addSignalListener(new SignalListener(){
@Override
public void getSignal(SignalImageEvent event) {
try {
if(event.hasSpectrogram()){
ImageIO.write(event.getSpectrogramImage(), "png", new File("your/path/to/png"));
}
} catch (IOException ex) {
Logger.getLogger(Signal.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
signalData.setMediaFile("your/path/to/media/to/view/in/the/spectrogram");
signalData.get(0L, 10000L, 800, 260, ImageMode.SpectrogramOnly, SearchMode.Absolute);| Example: (Gin & Juice.m4a from 0s to 10s) |
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