avconv.c:1867: error: Uninitialized Value
  The value read from got_output was never initialized.

avconv.c:1867:64: 
1865. 
1866.     //while we have more to decode or while the decoder did output something on EOF
1867.     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
                                                                     ^
1868.         int ret = 0;
1869.     handle_eof:
