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-rw-r--r--libavfilter/vf_gradfun.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavfilter/vf_gradfun.c b/libavfilter/vf_gradfun.c
index 260a44b6e5..32d8796071 100644
--- a/libavfilter/vf_gradfun.c
+++ b/libavfilter/vf_gradfun.c
@@ -189,7 +189,7 @@ static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *in)
AVFilterBufferRef *out;
int p, direct = 0;
- if ((in->perms & AV_PERM_WRITE) && !(in->perms & AV_PERM_PRESERVE)) {
+ if (in->perms & AV_PERM_WRITE) {
direct = 1;
out = in;
} else {