libavcodec/ffv1.c:1375: error: Uninitialized Value
  The value read from context_count was never initialized.

libavcodec/ffv1.c:1375:16: 
1373.             }
1374. 
1375.             if(p->context_count < context_count){
                     ^
1376.                 av_freep(&p->state);
1377.                 av_freep(&p->vlc_state);
