avfilter/vf_chromanr: fix rounding of final output

5ffad29d · Paul B Mahol · 316e0ff7 · 5ffad29d
Commit 5ffad29d authored Mar 01, 2022 by Paul B Mahol
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vf_chromanr.c libavfilter/vf_chromanr.c +2 -2

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--- a/libavfilter/vf_chromanr.c
+++ b/libavfilter/vf_chromanr.c
@@ -161,8 +161,8 @@ static int distance ## _slice##name(AVFilterContext *ctx, void *arg,
                }                                                                      \
            }                                                                          \
                                                                                       \
-            out_uptr[x] = su / cn;                                                     \
-            out_vptr[x] = sv / cn;                                                     \
+            out_uptr[x] = (su + (cn >> 1)) / cn;                                       \
+            out_vptr[x] = (sv + (cn >> 1)) / cn;                                       \
        }                                                                              \
                                                                                       \
        out_uptr += out_ulinesize / sizeof(type);                                      \