040000 tree ef3c7792a563ffa46e10079dfc5eec48e476b03e	camera
040000 tree 0101cdff75aea90fbbad14fad5555d03347f88bd	codec_impl
040000 tree ce3ca0d4ada424bc1eaa41d459be8bb4d320a610	ffmpeg
040000 tree fecc59f76d904a8a5520bdee98e11fb7dba1d1ce	raw_video_writer
040000 tree a4867ace6317b636376b311c479ab6810f1d7687	wav_writer