diff --git a/libavformat/vc1test.c b/libavformat/vc1test.c
index e55772a171825bcb36019766c392198d83dbae32..11a4a6f4a72afe6639c3b48ec2241e984549d876 100644
--- a/libavformat/vc1test.c
+++ b/libavformat/vc1test.c
@@ -73,6 +73,10 @@ static int vc1t_read_header(AVFormatContext *s,
     if(fps == 0xFFFFFFFF)
         av_set_pts_info(st, 32, 1, 1000);
     else{
+        if (!fps) {
+            av_log(s, AV_LOG_ERROR, "Zero FPS specified, defaulting to 1 FPS\n");
+            fps = 1;
+        }
         av_set_pts_info(st, 24, 1, fps);
         st->duration = frames;
     }