From 5964935c920ee227414c9d020a2318b3410fd789 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Mon, 29 May 2006 16:30:56 +0000
Subject: [PATCH] cbp must be >0 here or we are in troubble

Originally committed as revision 5420 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/h261.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/h261.c b/libavcodec/h261.c
index 96b5af1f64..a1a7f14f56 100644
--- a/libavcodec/h261.c
+++ b/libavcodec/h261.c
@@ -264,6 +264,7 @@ void ff_h261_encode_mb(MpegEncContext * s,
     h->previous_mba = h->current_mba;
 
     if(HAS_CBP(h->mtype)){
+        assert(cbp>0);
         put_bits(&s->pb,h261_cbp_tab[cbp-1][1],h261_cbp_tab[cbp-1][0]);
     }
     for(i=0; i<6; i++) {