said by audiog 
:Yes I agree.
WMP 9/10(MPEG 3) are up for DVDHD certification as the file format for the next gen DVD players. The other format is Blueray( MPEG 4) backed by Sony and the other computer hardware manufacturers.
Half of the DVD governing body wants WMP 9(MPEG 3) format and the other wants MPEG 4 video and audio. This has caused the MPEG 4 backers to break from the DVD governing body and to form the Blueray group a independent governing group. Now the IEEE guys are trying to mend the breakup and now the Blueray group is considering supporting WMP 9 and MPEG 4 as file formats.
So WMP 9( MPEG 3) is a natural test bed for IP TV but they should be looking at MPEG 4 also.
MPEG 4 is 30% more coding power the MPEG 3.
This link will explain the difference between MPEG 4 and 3:
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www.telos-systems.com/?/techtalk···ault.htm HD-DVD and BluRAY support WMV9, the differeces between the two formats is surprisly little except the size of the storage. 
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