diff --git a/libavcodec/pthread.c b/libavcodec/pthread.c
index c0a872eba0..9a52924d3d 100644
--- a/libavcodec/pthread.c
+++ b/libavcodec/pthread.c
@@ -85,7 +85,7 @@ typedef struct ThreadContext {
 } ThreadContext;
 
 /// Max number of frame buffers that can be allocated when using frame threads.
-#define MAX_BUFFERS (32+1)
+#define MAX_BUFFERS (34+1)
 
 /**
  * Context used by codec threads and stored in their AVCodecContext thread_opaque.