libavformat/mpeg.c:309: error: Uninitialized Value
  The value read from c was never initialized.

libavformat/mpeg.c:309:21: 
307.     }
308.     if ((c & 0xe0) == 0x20) {
309.         dts = pts = get_pts(s->pb, c);
                         ^
310.         len -= 4;
311.         if (c & 0x10){
