1 V4L2_FIELD_ANY 2 V4L2_FIELD_NONE 3 V4L2_FIELD_TOP 4 V4L2_FIELD_BOTTOM 5 V4L2_FIELD_INTERLACED 6 V4L2_FIELD_SEQ_TB 7 V4L2_FIELD_SEQ_BT 8 V4L2_FIELD_ALTERNATE 9 V4L2_FIELD_INTERLACED_TB 10 V4L2_FIELD_INTERLACED_BT 11
