||The English used in this article may not be easy for everybody to understand. (January 2012)|
High-definition television (HDTV) is a new television broadcasting system which uses a higher resolution than a normal television. With HDTV, people can watch television in higher quality than old television, giving a more vivid and clear screen.
HDTV picture resolution is at least twice that of SDTV, so it can present a more vivid screen than analog television or DVD. HDTV can control resolution efficiently.
Some videos on the website YouTube, a free video sharing website that lets people upload and view videos, are in HD.