WHAT VIDEO CODECS DOES HD DVD SUPPORT?
Technically, the HD DVD disc builds on the experience gained from the conventional DVD format. There is a choice of three video compression strategies for example: MPEG-2 HL [a higher resolution version of MPEG-2 ML used on existing DVDs]; AVC [MPEG-4] which achieves comparable quality at a significantly lower bit rate and VC-1 [previously known as Windows Media 9 from Microsoft]. The file structure on the disc adopts UDF 2.5.
