avfoundation not found

[wlkfec]

on mac : org.bytedeco.javacv.FFmpegFrameGrabber$Exception: av_find_input_format() error: Could not find input format "avfoundation".

[wlkfec]

public static void createGif(String dest) throws Exception{ FFmpegLogCallback.set(); FFmpegFrameGrabber grabber = new FFmpegFrameGrabber("0"); grabber.setFormat("avfoundation"); grabber.start(); FFmpegFrameRecorder recorder =new FFmpegFrameRecorder(dest + ".gif", 500, 500, 0); // AV_PIX_FMT_RGB4_BYTE recorder.setPixelFormat(AV_PIX_FMT_RGB4_BYTE); recorder.setVideoCodec(AV_CODEC_ID_GIF); recorder.start(); double frameRate = grabber.getFrameRate(); AtomicInteger count = new AtomicInteger(0); do { Frame frame = grabber.grab(); recorder.record(frame); } while (count.incrementAndGet() != frameRate * 5); recorder.stop(); grabber.stop(); recorder.release(); grabber.release(); }

[saudet]

There is a bug in JavaCV 1.5.7. Please call FFmpegFrameGrabber.tryLoad() before start().

[saudet]

Duplicate of #1756

[wlkfec]

It works, but when I call grab.grab, I find that only the first few frames have data, and then all the frames are empty, and the camera is not turned off, is it still missing the necessary settings?

[saudet]

That's another issue that was fixed in commit https://github.com/bytedeco/javacv/commit/8d75c0a33c9a105c7da08e754179ac785bf6f788, see issue #1784. Please give it a try with the snapshots: http://bytedeco.org/builds/