libavcodec/utils.c:1694: error: Uninitialized Value
  The value read from got_frame was never initialized.

libavcodec/utils.c:1694:39: 
1692.         return ret;
1693. 
1694.     if (avctx->internal->draining && !got_frame)
                                            ^
1695.         avctx->internal->draining_done = 1;
1696. 
