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-rw-r--r--libavfilter/stack_internal.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/libavfilter/stack_internal.c b/libavfilter/stack_internal.c
index cf1edf222e..1ee20d66cf 100644
--- a/libavfilter/stack_internal.c
+++ b/libavfilter/stack_internal.c
@@ -336,6 +336,7 @@ static const AVFilterPad stack_outputs[] = {
#define DEFINE_STACK_FILTER(category, api, capi, filter_flags) \
static const AVClass category##_##api##_class = { \
.class_name = #category "_" #api, \
+ .item_name = av_default_item_name, \
.option = category##_##api##_options, \
.version = LIBAVUTIL_VERSION_INT, \
}; \