V4L2_AV1_SEQUENCE_FLAG_SUBSAMPLING_Y
{V4L2_AV1_SEQUENCE_FLAG_SUBSAMPLING_Y, "SUBSAMPLING_Y"},
V4L2_AV1_SEQUENCE_FLAG_SUBSAMPLING_Y;
const bool sy = s->flags & V4L2_AV1_SEQUENCE_FLAG_SUBSAMPLING_Y;
V4L2_AV1_SEQUENCE_FLAG_SUBSAMPLING_Y |