Is it possible to master a DVD with 720HD high-definition video? Just bought DVD-Creator from the App store; big disappointment. Took an uncompressed 11 minute QuickTime 720HD 6.2GB file down to a 721MB VIDEO_TS when it burned the DVD. In other words, it chucked 88% of the info and looks lousy. Unacceptable. 

I'm running Snow Leopard, so Anamorphisizer is out. myDVDEdit 1.5(55) doesn't perform as advertised in changing from iDVD's 4:3 only-output into 16:9. 

So how can I get high quality 720HD onto a DVD from Final Express 4.0.1 using OS 10.6.8? (Lion has a known incompatibility with my 2010 MBP with its NVIDIA GeFORCE GT 300M)

with advanced appreciation…

(also, tags don't exist for DVD-Creator, Anamorphisizer, NVIDIA, &amp; myDVDEDit; would someone please consider adding them. I'll probably be dead long before I get to 300 posts)!
No, there is simply no way to encode HD resolution video onto a DVD. This is a common misconception. The DVD video format does not support HD resolution. DVD players cannot reproduce 720HD video.

If you want HD on a disk, that is what Blu-ray disks and Blu-ray console players are for.

There was once a format called HD-DVD, but it is no longer supported by anybody and standard DVD players will not play back an HD-DVD at the intended resolution.

720HD is 1280 x 720 pixels per frame.

The highest resolution that the DVD format can support is 720 x 480 pixels per frame for NTSC (or 720 x 576 pixels per frame for PAL), which is at best only 37.5% of the resolution of 720HD.