libavformat/flvenc.c:212: error: Uninitialized Value
  The value read from height was never initialized.

libavformat/flvenc.c:212:9: 
210. 
211.         put_amf_string(pb, "height");
212.         put_amf_double(pb, height);
             ^
213. 
214.         put_amf_string(pb, "videodatarate");
