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-rw-r--r--libavfilter/vf_estdif.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavfilter/vf_estdif.c b/libavfilter/vf_estdif.c
index 2bb1680f43..eae2650a21 100644
--- a/libavfilter/vf_estdif.c
+++ b/libavfilter/vf_estdif.c
@@ -346,7 +346,7 @@ static int deinterlace_slice(AVFilterContext *ctx, void *arg,
const int redge = s->redge;
const int depth = s->depth;
const int interlaced = !!(in->flags & AV_FRAME_FLAG_INTERLACED);
- const int tff = (s->field == (s->parity == -1 ? interlaced ? (in->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST) : 1 :
+ const int tff = (s->field == (s->parity == -1 ? interlaced ? !!(in->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST) : 1 :
s->parity ^ 1));
for (int plane = 0; plane < s->nb_planes; plane++) {