FFmpeg ffmpeg = new FFmpeg("/path/to/ffmpeg");
FFprobe ffprobe = new FFprobe("/path/to/ffprobe");

FFmpegBuilder builder = new FFmpegBuilder()

  .setInput("input.mp4")     // Filename, or a FFmpegProbeResult
  .overrideOutputFiles(true) // Override the output if it exists

  .addOutput("output.mp4")   // Filename for the destination
    .setFormat("mp4")        // Format is inferred from filename, or can be set
    .setTargetSize(250_000)  // Aim for a 250KB file

    .disableSubtitle()       // No subtiles

    .setAudioChannels(1)         // Mono audio
    .setAudioCodec("aac")        // using the aac codec
    .setAudioSampleRate(48_000)  // at 48KHz
    .setAudioBitRate(32768)      // at 32 kbit/s

    .setVideoCodec("libx264")     // Video using x264
    .setVideoFrameRate(24, 1)     // at 24 frames per second
    .setVideoResolution(640, 480) // at 640x480 resolution

    .setStrict(FFmpegBuilder.Strict.EXPERIMENTAL) // Allow FFmpeg to use experimental specs
  .done();

FFmpegExecutor executor = new FFmpegExecutor(ffmpeg, ffprobe);

// Run a one-pass encode
executor.createJob(builder).run();

// Or run a two-pass encode (which is better quality at the cost of being slower)
executor.createTwoPassJob(builder).run();

FFprobe ffprobe = new FFprobe("/path/to/ffprobe");
FFmpegProbeResult probeResult = ffprobe.probe("input.mp4");

FFmpegFormat format = probeResult.getFormat();
System.out.format("%nFile: '%s' ; Format: '%s' ; Duration: %.3fs", 
 format.filename,
 format.format_long_name,
 format.duration
);

FFmpegStream stream = probeResult.getStreams().get(0);
System.out.format("%nCodec: '%s' ; Width: %dpx ; Height: %dpx",
 stream.codec_long_name,
 stream.width,
 stream.height
);

FFmpegExecutor executor = new FFmpegExecutor(ffmpeg, ffprobe);

FFmpegProbeResult in = ffprobe.probe("input.flv");

FFmpegBuilder builder = new FFmpegBuilder()
 .setInput(in) // Or filename
 .addOutput("output.mp4")
 .done();

FFmpegJob job = executor.createJob(builder, new ProgressListener() {

 // Using the FFmpegProbeResult determine the duration of the input
 final double duration_ns = in.getFormat().duration * TimeUnit.SECONDS.toNanos(1);

 @Override
 public void progress(Progress progress) {
  double percentage = progress.out_time_ns / duration_ns;

  // Print out interesting information about the progress
  System.out.println(String.format(
   "[%.0f%%] status:%s frame:%d time:%s ms fps:%.0f speed:%.2fx",
   percentage * 100,
   progress.status,
   progress.frame,
   FFmpegUtils.toTimecode(progress.out_time_ns, TimeUnit.NANOSECONDS),
   progress.fps.doubleValue(),
   progress.speed
  ));
 }
});

job.run();