libavformat/rmdec.c:583: error: Uninitialized Value
  The value read from pic_num was never initialized.

libavformat/rmdec.c:583:29: 
581. 
582.     *pseq = seq;
583.     if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
                                 ^
584.         vst->slices = ((hdr & 0x3F) << 1) + 1;
585.         vst->videobufsize = len2 + 8*vst->slices + 1;
