[FFmpeg-devel] [PATCH 5/5] avcodec/ffv1dec: Fix a YUVA issue with remaping

Michael Niedermayer michael at niedermayer.cc
Sat Mar 15 02:00:07 EET 2025


Untested

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavcodec/ffv1dec.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c
index 968c386f897..6ec9e229f3b 100644
--- a/libavcodec/ffv1dec.c
+++ b/libavcodec/ffv1dec.c
@@ -371,7 +371,8 @@ static int decode_slice(AVCodecContext *c, void *arg)
             decode_plane(f, sc, &gb, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 2, 1, ac);
         }
         if (f->transparency)
-            decode_plane(f, sc, &gb, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], (f->version >= 4 && !f->chroma_planes) ? 1 : 2, 2, 1, ac);
+            decode_plane(f, sc, &gb, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], (f->version >= 4 && !f->chroma_planes) ? 1 : 2,
+                                                                                                          (f->version >= 4 && !f->chroma_planes) ? 1 : 3, 1, ac);
     } else if (f->colorspace == 0) {
          decode_plane(f, sc, &gb, p->data[0] + ps*x + y*p->linesize[0]          , width, height, p->linesize[0], 0, 0, 2, ac);
          decode_plane(f, sc, &gb, p->data[0] + ps*x + y*p->linesize[0] + (ps>>1), width, height, p->linesize[0], 1, 1, 2, ac);
-- 
2.48.1



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