1 files changed, 12 insertions, 0 deletions
diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index d71ffdc620..99b97dfc5c 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -901,3 +901,15 @@ int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque
     return ret;
 }
 
+void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, AVFilterBufferRef *src)
+{
+    // copy common properties
+    dst->pts             = src->pts;
+    dst->pos             = src->pos;
+
+    switch (src->type) {
+    case AVMEDIA_TYPE_VIDEO: *dst->video = *src->video; break;
+    case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break;
+    default: break;
+    }
+}