@Wicz3k
I have not used videoCapture，so i'm not sure is it ok in your sence。
but in my sence , i push a local mp4 video to rtmp stream , This code doesn't work either。
and in my test , if framerate is 25 , sleep time should in range 10 to 15 , but The calculated value is around 40

// local mp4 file
FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(new FileInputStream(file));
grabber.start();
//rtmp url
FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(url, grabber.getImageWidth(), grabber.getImageHeight(), grabber.getAudioChannels());
try {
	recorder.setFormat("flv");
	recorder.setVideoCodec(grabber.getVideoCodec());
	recorder.setAudioCodec(grabber.getAudioCodec());
	recorder.setVideoBitrate(grabber.getVideoBitrate());
	recorder.setAudioBitrate(grabber.getAudioBitrate());
	recorder.setFrameRate(grabber.getFrameRate());
	recorder.start();
	
	log.info("framerate is:{}", grabber.getFrameRate());
	
	Frame frame = null;
	while ((frame = grabber.grab()) != null) {
		long begin = System.currentTimeMillis();
		recorder.record(frame);
		long end = System.currentTimeMillis();
		long sleep_real = (long) ((1000 / grabber.getFrameRate()) - (end - begin));
		if (sleep_real > 0) {
			Thread.sleep(sleep_real);
		}
	}
} finally {
	recorder.stop();
	recorder.release();
	grabber.stop();
	grabber.release();
}

Uh oh!

how to grab frame by timestamp? #1633

Description

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions