libavformat/mpegtsenc.c:595: error: Uninitialized Value
  The value read from buf[_] was never initialized.

libavformat/mpegtsenc.c:595:17: 
593.                         buf + 4 + afc_len,
594.                         header_len - (4 + afc_len));
595.                 buf[4] += stuffing_len;
                     ^
596.                 memset(buf + 4 + afc_len, 0xff, stuffing_len);
597.             } else {
