libavcodec/interplayvideo.c:812: error: Uninitialized Value
  The value read from P[_] was never initialized.

libavcodec/interplayvideo.c:812:17: 
810. 
811.             for (x = 0; x < 4; x++, flags >>= 2)
812.                 *pixel_ptr++ = P[flags & 0x03];
                     ^
813. 
814.             pixel_ptr += s->stride - 4;
