Hi Andy,
The benefit of going from the timeline with raw files and directly to Create Disc is that if, in yours and my case, you want to produce a DVD in SD you just merely click on the DVD icon instead of blu-ray disc.
PD8 will then re-encode your entire project into MPEG2 and downscale to enable the HD footage to be watched on a normal DVD player. All the chapters and menus will be the same, just in SD instead of HD.
My most recent project was my cousins wedding. It was recorded in 1920x1080 HD. I provided them with a blu-ray copy and their parents with the downscaled DVD copy.
It was simply a case of going into Create Disc twice with the same raw footage on the timeline, but selecting different media to output on.
Dual layer DVDs DVD+R DL for example are what you need for 8.5gb!
Cheers,
Andrew
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