libavformat/flvenc.c:232: error: Uninitialized Value
  The value read from channels was never initialized.

libavformat/flvenc.c:232:27: 
230. 
231.         put_amf_string(pb, "stereo");
232.         put_amf_bool(pb, (channels == 2));
                               ^
233. 
234.         put_amf_string(pb, "audiocodecid");
