libavcodec/interplayvideo.c:905: error: Uninitialized Value
  The value read from P[_] was never initialized.

libavcodec/interplayvideo.c:905:13: 
903.         }
904.         for (x = 0; x < 8; x++)
905.             pixel_ptr[x] = P[x >> 2];
                 ^
906.         pixel_ptr += s->stride;
907.     }
