This also improves the numbering of duplicate tests
Allow adding download tests right in the IE file. This will cut down on merge conflicts and make it more likely that new IE authors will add tests right away.
Conflicts: youtube_dl/extractor/__init__.py
Now it doesn't check the size of the two parts of the key.
The video can be downloaded with rtmp or http, but the best quality format seems to always use rtmp. Deleted the old methods.
When writing to a file it would fail.
It was being called as "error"
Added option for vtt WebVTT subtitle format for Youtube