[FFmpeg-devel] [PATCH v2 1/3] avfilter/vf_bwdif: consider chroma subsampling when enforcing minimum dimensions

[Cosmin Stejerean]

From: Cosmin Stejerean <cosmin at cosmin.at>

Fixes #10688

Signed-off-by: Cosmin Stejerean <cosmin at cosmin.at>
---
 libavfilter/vf_bwdif.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/libavfilter/vf_bwdif.c b/libavfilter/vf_bwdif.c
index 137cd5ef13..80aa85a48b 100644
--- a/libavfilter/vf_bwdif.c
+++ b/libavfilter/vf_bwdif.c
@@ -191,12 +191,19 @@ static int config_props(AVFilterLink *link)
         return ret;
     }
 
-    if (link->w < 3 || link->h < 4) {
-        av_log(ctx, AV_LOG_ERROR, "Video of less than 3 columns or 4 lines is not supported\n");
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
+
+    int h = link->h;
+    int w = link->w;
+    int h_chroma = AV_CEIL_RSHIFT(h, desc->log2_chroma_h);
+    int w_chroma = AV_CEIL_RSHIFT(w, desc->log2_chroma_w);
+
+    if (w < 3 || w_chroma < 3 || h < 4 || h_chroma < 4) {
+        av_log(ctx, AV_LOG_ERROR, "Video with planes less than 3 columns or 4 lines is not supported\n");
         return AVERROR(EINVAL);
     }
 
-    yadif->csp = av_pix_fmt_desc_get(link->format);
+    yadif->csp = desc;
     yadif->filter = filter;
     ff_bwdif_init_filter_line(&s->dsp, yadif->csp->comp[0].depth);
 
-- 
2.42.1