Add libfdk_aac codec
Fix undefined variable bug
Add a failing test for converting 2pass (audio channel is removed)
Bugfix in dropping audio in 2-pass encode
Merge pull request #21 from tahajahangir/add_fdk_aac_codec

Add libfdk_aac codec
Merge pull request #22 from tahajahangir/fix_two_pass

Fix two pass encoding