StreamTranscoder: refactoring processFrame

* If no inputEssence, rewrap.
* Else, transcode.
DummyVideo: update comment

Correct NTFC to NTFS.
setProfile: uniformize print

* Do not print if first wraning (before setup).
* Print with [name_of_the_class].
InputAudio: clean setup

* Remove commented prints.
* Set _codecContext->channels only once.
Merge branch 'master' of https://github.com/avTranscoder/avTranscoder into dev_clean
CodedDesc: reorder includes
Merge pull request #55 from cchampet/dev_clean

Clean