Not to seem stupid but with the new Blu-Ray discs that will be coming out will they play in a regular machine or will I have to upgrade all of my players?
Regular DVDs will play in a new Blu-Ray player and actually upscale to 720p via HDMI connection, but a Blu-Ray disc will NOT play in a standard DVD player. Sorry.
In contrast, supposedly at least some HD-DVDs will have at least some discs that will be double sided, with the hidef version on one side and a regular DVD version on the other, so you can buy and play them on your DVD player, then play the hidef side when you get a hidef player.
And may be limited to 15 GB on one side and 5 GB on the other depending upon the viability of bonding a dual layered 30 GB HD-DVD and a dual layered 8.5 GB DVD disc together.
I hate dual sided discs, and DualDiscs suck!! They should have two separate disc formats in the package if they want to release one UPC. In the long run, it's a better way to transition.
Dual-discs wouldn't bother me if in practice it means *NO* compromise to either the SD or the HD presentation.
Of course, even then the downside is that to get a DVD-9 and a dual-layer HD DVD you've got to go double-sided...which means a flipper with no silk-screen art. Call me picky, but I HATE dual-sided DVDs that I have to read with a microscope to put in the player and then end up getting finger prints on one side getting them in and out of the package.
Picky I know but I'd rather a 2-disc SE than a DVD-18 any day of the week for that very reason....which is one reason why I'm not hot on the idea of dual-sided "dual discs".
Now...if they could give you a 2-layer DVD *and* a 2-layer HD all from ONE side of a disc...THAT would be a dual-disc solution you wouldn't hear me complain about!