Originally Posted by srn

http://upload.wikimedia.org/wikipedi...rarchy.svg.png and http://torrentinvites.org/f29/what-scene-45511/

If it's an HDTV release then the source would be a TV. An HD TV.

Thanks for the reply, I know the concept but still there is not enough details.
Regarding 1080p HDTV releases, I said that there ara pre-air releases with qualities better than any broadcasts or cable channels can provide, so there is no information about the source. (you can't record HDTV with this quality)