Also, "uncompressed" is a specific term for a non-delivery format that you will not be using on either DVD or BluRay. All video for playback, SD or HD, is compressed.

The OP's open question is ambiguous. 1) Is the question about the Toshiba HD format for optical disc? 2) Or fitting Blu-ray AVCHD encode on a DVD media? 3) Or delivering a DVD-Rom with uncompressed video files on it? 4) Or something else????

There is an inference of using dual-layer DVD media, but this form of media is not suggested as a best practice deliverable at all. I say inference because the term dual surface is used, which is to say that could describe a DVD media that has a flip-over side. Bad use of terminology. So the question is really what will fit on a standard DVD? at what encode quality? For what kind of set-top player?

"You can fit about 45 minutes of high-def video on a dual-layer DVD."

Well... yes, no, maybe... not really.

"HD" refers really to resolution, whereas how much can fit on a disc comes more down to bit rate and codec used. You could probably fit 2 hours on a dual layer dvd, but you would have to drop the bit rate low enough so that it wouldn't look too great anymore.

The old Toshiba HD DVD's used mpeg 2 for the most part and at 25Mb/s I could never get anything more than about 25 minutes on a single layer disc. Still have my Toshiba A1 player BTW... anybody wanna buy one? :)

The Blu Ray dvd's (known as an avchd disc) is slightly better bacause of the avc encoding and you can get about 40 minutes at 18Mb/s (which is reasonable quality)

An avchd disc is not really a Blu Ray disc at all. A blu Ray disc uses a blue laser for playback while an avchd disc uses your typical red laser. Your audio types are also a bit more restricted (can't use DTS, or dts hd master on an avchd disc). It should also be noted that while most Blu Ray players do support avchd discs, avchd playback not an official part of the blu ray spec and therefore you will find SOME machines not supporting it.

Not all HD files have the same bit rate, and it is the bit rate that determines how much you can fit on a DVD. PAL cameras shoot at 25 fps whereas NTSC shoot at 30 fps, so they may have a higher bit rate for the same frame quality.

My camera shoots 1920x1080,50i at 18 Mbps. At that rate I can fit just under 40 mins on a 4.7 GB disc.

Such discs are non-standard and my Blu-ray player will play so-called AVCHD discs, authoured with some software but not others. It won't play discs created with early versions of DVDA directly, but it will after minor patching.

DVDA used to burn to Blur-ray ISO files DVD's but the last couple versions don't let you do that anymore. So now I just make ISO files and use Image Burn to burn the files to DVD. Works fine but some blu-ray players won't playback a DVD with BD files on it. I have a couply Sylvania BD players that will play anything, but my LG BD player won't play a DVD with BD files on it. A little frustrating.

I do a lot of 20 minute projects so I just use a regular 4.7 GB disc which works great.

Mike