libavcodec/h264pred.c:217: error: Uninitialized Value
  The value read from l4 was never initialized.

libavcodec/h264pred.c:217:5: 
215.     src[3+1*stride]=
216.     src[2+2*stride]=
217.     src[1+3*stride]=(l4 + l6 + 2*l5 + 2)>>2;
         ^
218.     src[3+2*stride]=
219.     src[2+3*stride]=(l5 + l7 + 2*l6 + 2)>>2;
