Studio 8 max (best quality) movie = 60 minutes. Why so?

[distendo]

I'm sure this has been comprehensively answered elsewhere, but I've found no search results.

When outputting an authored movie, Pinnacle Studio 8 only permits 60 minutes @ best quality. Sometimes MPEG audio compression is the only way to get S8 to agree to producing the dvd disk (or image), as PCM audio takes it 'way over' (e.g. by "10 minutes").
However, the actual data when burned amounts to just 2.3Gb. This represents an absurd waste of available disk space.

I asked Pinnacle and they replied:
"Unfortunately there is no way of burning more than 58/60 mins to a DVD, which holds almost 2GB of disc space. Most commercial DVD's are pressed, and use dual layered, dual sided DVD's which allow a huge capacity. With Studio 8, and a standard single layered/single sided DVD, only 60 mins of footage can be burned.
"You can try maximising this capacity by selecting 'Most video on Disk' which will lower your quality for the extra space. Alternatively, use the DVD as a DATA DVD and burn the raw movie file rather than the DVD format (although it won't play on a standalone DVD player)."

This seems weird to me: surely I should be able to include much more than this (e.g. 90+ mins) without compromising on quality, perhaps by including two MPEG2 segments? I presume that if I want to retain S8's menus, I can't do this within S8, but would have to use the MPEG data and use another prog such as dvdlab to construct menus?

Explanations, URLs and other pointers in the right direction gratefully received!

Thanks

[distendo]

After no responses I took this to a more generic topic at:
https://www.videohelp.com/forum/viewtopic.php?p=896952#896952

[presto]

This has been discussed quite a bit on the Pinnacle Studio Web Board. Do a search there.

What I ended up doing was just using Studio when I need to do special effects or complex edits. Then us Tmpgenc DVD Author to author the disk.