libavcodec/interplayvideo.c:507: error: Uninitialized Value
  The value read from P[_] was never initialized.

libavcodec/interplayvideo.c:507:9: 
505.         }
506.         memset(s->pixel_ptr,     P[0], 4);
507.         memset(s->pixel_ptr + 4, P[1], 4);
             ^
508.         s->pixel_ptr += s->stride;
509.     }
