libavcodec/interplayvideo.c:727: error: Uninitialized Value
  The value read from P[_] was never initialized.

libavcodec/interplayvideo.c:727:11: 
725.     /* 4-color encoding for each 4x4 quadrant, or 4-color encoding on
726.      * either top and bottom or left and right halves */
727.     if (!(P[0] & 0x8000)) {
               ^
728. 
729.         /* 4-color encoding for each quadrant */
