ffserver.c:4075: error: Uninitialized Value
  The value read from video_enc.flags was never initialized.

ffserver.c:4075:17: 
4073.             if (stream) {
4074.                 video_enc.mb_decision = FF_MB_DECISION_BITS; //FIXME remove
4075.                 video_enc.flags |= CODEC_FLAG_4MV;
                      ^
4076.             }
4077.         } else if (!strcasecmp(cmd, "VideoTag")) {
