diff --git a/libobs/util/circlebuf.h b/libobs/util/circlebuf.h
index c2fce69de..60ec9b4f6 100644
--- a/libobs/util/circlebuf.h
+++ b/libobs/util/circlebuf.h
@@ -173,7 +173,12 @@ static inline void circlebuf_push_front(struct circlebuf *cb, const void *data,
 	cb->size += size;
 	circlebuf_ensure_capacity(cb);
 
-	if (cb->start_pos < size) {
+	if (cb->size == size) {
+		cb->start_pos = 0;
+		cb->end_pos = size;
+		memcpy((uint8_t *)cb->data, data, size);
+
+	} else if (cb->start_pos < size) {
 		size_t back_size = size - cb->start_pos;
 
 		if (cb->start_pos)
@@ -216,7 +221,12 @@ static inline void circlebuf_push_front_zero(struct circlebuf *cb, size_t size)
 	cb->size += size;
 	circlebuf_ensure_capacity(cb);
 
-	if (cb->start_pos < size) {
+	if (cb->size == size) {
+		cb->start_pos = 0;
+		cb->end_pos = size;
+		memset((uint8_t *)cb->data, 0, size);
+
+	} else if (cb->start_pos < size) {
 		size_t back_size = size - cb->start_pos;
 
 		if (cb->start_pos)