libavformat/flvenc.c:221: error: Uninitialized Value
  The value read from videocodecid was never initialized.

libavformat/flvenc.c:221:9: 
219. 
220.         put_amf_string(pb, "videocodecid");
221.         put_amf_double(pb, videocodecid);
             ^
222.     }
223. 
