fix a rare NaN in ratecontrol

git-svn-id: svn://svn.videolan.org/x264/trunk@541 df754926-b1dd-0310-bc7b-ec298dee348c

diff --git a/encoder/ratecontrol.c b/encoder/ratecontrol.c
index 7393261feb0ffdcd47df3eed68d4107947d3e026..7f0d4d6577e3761d30f4276635c4e1f68b5c5254 100644 (file)
--- a/encoder/ratecontrol.c
+++ b/encoder/ratecontrol.c
@@ -1038,6 +1038,8 @@ static double predict_size( predictor_t *p, double q, double var )
 
 static void update_predictor( predictor_t *p, double q, double var, double bits )
 {
+    if( var < 10 )
+        return;
     p->count *= p->decay;
     p->coeff *= p->decay;
     p->count ++;