1 hour to 1.5 hours of timeline should fit nicely on a single layer dvd.
What error are you getting?
I've been getting about 3.5 hours at the lowest quality on a disc. I don't need high quality so that's fine. I just have to do trial and error so I can figure out how much I can get on the disc because the amount of space it says it will take doesn't match what it actually takes. I don't remember the error I used to get but discovered that's what it was; it was writing off the end of the disc. When I switch to saving to disc folder (.iso in v14), I found that it was taking a lot more than it said it would.
I'm guessing that the space estimate is only accurate if you choose the highest quality when burning, right?
Why not use a double layer?
Yes, I could certainly do that. The point of my post, though, was to try to figure out why PE doesn't accurately estimate the space requirement. Since you implied using a higher quality to get only 1 to 1.5 hours on a disc, I did 2 experiments. I changed the quality slider to the highest (8Mbps) and it actually overestimated the space requirement by 8%. Then I changed it to right in the middle (4.8Mbps) and it overestimated by just 3%. So it looks like the space esitmater algorithm gets further off the further you go from average/middle quality.
So back to my original post, I don't want to get more or less on a disc; I want to know how much I can get on a disc at the lowest quality without a bunch of trial and error.
It is was it is: an estimate.
I am guessing 2 to 2.5 hours.