RGB_TO_U_BT709    234 libavfilter/vf_histogram.c         s->envelope_color[1] = RGB_TO_U_BT709(s->envelope_rgba[0], s->envelope_rgba[1], s->envelope_rgba[2], 0);
RGB_TO_U_BT709    114 libavfilter/vf_pad_opencl.c         ctx->pad_color[1] = RGB_TO_U_BT709(ctx->pad_rgba[0], ctx->pad_rgba[1], ctx->pad_rgba[2], 0);
RGB_TO_U_BT709    260 libavfilter/vf_remap.c         s->fill_color[1] = RGB_TO_U_BT709(s->fill_rgba[0], s->fill_rgba[1], s->fill_rgba[2], 0) * factor;