1 V4L2_BUF_FLAG_MAPPED 2 V4L2_BUF_FLAG_QUEUED 3 V4L2_BUF_FLAG_DONE 4 V4L2_BUF_FLAG_KEYFRAME 5 V4L2_BUF_FLAG_PFRAME 6 V4L2_BUF_FLAG_BFRAME 7 V4L2_BUF_FLAG_TIMECODE 8 V4L2_BUF_FLAG_INPUT 9
