libavformat/rmdec.c:582: error: Uninitialized Value
  The value read from seq was never initialized.

libavformat/rmdec.c:582:5: 
580.     //now we have to deal with single slice
581. 
582.     *pseq = seq;
         ^
583.     if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
584.         vst->slices = ((hdr & 0x3F) << 1) + 1;
