Open GoogleCodeExporter opened 8 years ago
Right, the encoder doesn't take into account the keyframe flag. That would be a
good idea to implement. I'm guessing we could do something that looks like what
FFmpeg does to force key frames with the "force_key_frames" option:
http://ffmpeg.org/ffmpeg.html
If anyone has more information about that, please let us know, thank you!
Otherwise, we can set the maximum interval between keyframes with the GOP size,
where a value of 0 should create a video file with only keyframes.
Incidentally, I've added a setter/getter pair recently in this revision:
http://code.google.com/p/javacv/source/detail?r=9f9f82497b661170d29d43784f04fdcb3ad1f9c3
Original comment by samuel.a...@gmail.com
on 18 Apr 2014 at 11:40
I had tried the GOP setting that didn't help moreover the timestamps on the
frames got screwed up.
Original comment by sabirock...@gmail.com
on 18 Apr 2014 at 2:25
That might be a bug you may want to report upstream to the FFmpeg developers...
Original comment by samuel.a...@gmail.com
on 18 Apr 2014 at 2:48
Can you provide the few lines of code that are failing to encode properly?
Thanks!
Original comment by samuel.a...@gmail.com
on 29 Apr 2014 at 1:49
I initialise the recorder and then keep on supplying frames to it either using
another grabber or camera preview data as input for encoding
recorder = new FFmpegFrameRecorder(movieFile, imageWidth, imageHeight, 1);
recorder.setFormat("mp4");
recorder.setVideoCodec(avcodec.AV_CODEC_ID_MPEG4);
recorder.setFrameRate(frameRate);
//For best quality video set this to 0 i.e. get the maximum lossless output
recorder.setVideoQuality(0);
...
...
long t = (System.nanoTime() - startTime) / 1000;
if (t > recorder.getTimestamp()) {
recorder.setTimestamp(t);
}
Frame frame = new Frame();
frame.image = yuvIplimage;
frame.keyFrame = true; // TODO: Is this actually setting every frame to be
a keyframe?
recorder.record(frame);
Thanks
Original comment by sabirock...@gmail.com
on 30 Apr 2014 at 4:09
Original issue reported on code.google.com by
sabirock...@gmail.com
on 14 Apr 2014 at 6:21