libavcodec/interplayvideo.c:652: error: Uninitialized Value
  The value read from P[_] was never initialized.

libavcodec/interplayvideo.c:652:21: 
650. 
651.                 for (x = 0, shifter = 0; x < 8; x++, shifter += 2)
652.                     *s->pixel_ptr++ = P[split + ((flags >> shifter) & 0x03)];
                         ^
653. 
654.                 s->pixel_ptr += s->line_inc;
