[FFmpeg-devel] [PATCH v3 4/8] avfilter/vf_extractplanes: tag alpha plane as full range

[Niklas Haas]

From: Niklas Haas <git at haasn.dev>

Alpha planes are explicitly full range, even for limited range YUVA
formats. Mark them as such.
---
 libavfilter/vf_extractplanes.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavfilter/vf_extractplanes.c b/libavfilter/vf_extractplanes.c
index 7b7149ab24..ca406ff323 100644
--- a/libavfilter/vf_extractplanes.c
+++ b/libavfilter/vf_extractplanes.c
@@ -312,6 +312,8 @@ static int extract_plane(AVFilterLink *outlink, AVFrame *frame)
     if (!out)
         return AVERROR(ENOMEM);
     av_frame_copy_props(out, frame);
+    if (idx == 3 /* alpha */)
+        out->color_range = AVCOL_RANGE_JPEG;
 
     if (s->is_packed) {
         extract_from_packed(out->data[0], out->linesize[0],
-- 
2.42.0