CHECKERBOARD_LR   213 libavfilter/vf_stereo3d.c     { "chl",   "checkerboard left first",             0, AV_OPT_TYPE_CONST, {.i64=CHECKERBOARD_LR},    0, 0, FLAGS, "out" },
CHECKERBOARD_LR   455 libavfilter/vf_stereo3d.c         if (s->out.format != CHECKERBOARD_LR &&
CHECKERBOARD_LR   560 libavfilter/vf_stereo3d.c     case CHECKERBOARD_LR:
CHECKERBOARD_LR   950 libavfilter/vf_stereo3d.c     case CHECKERBOARD_LR: