diff --git a/libavcodec/error_resilience.c b/libavcodec/error_resilience.c
index 584bac865ea4a46191afde5eaa1e6b51207f7684..3cb8d40bcf11b45581cf7aaca4098ce379cec6c7 100644
--- a/libavcodec/error_resilience.c
+++ b/libavcodec/error_resilience.c
@@ -528,6 +528,8 @@ score_sum+= best_score;
     
 static int is_intra_more_likely(MpegEncContext *s){
     int is_intra_likely, i, j, undamaged_count, skip_amount, mb_x, mb_y;
+    
+    if(s->last_picture.data[0]==NULL) return 1; //no previous frame available -> use spatial prediction
 
     undamaged_count=0;
     for(i=0; i<s->mb_num; i++){