Thread: how to burn multiple movies in one DVD-ROM?

i was just wondering. i saw some DVDs with lots of movies in it.. and series DVDs, like there are 20 episodes in one DVD and it has 1 hour for each episode, how does this happen if a DVD-R is only for 120mins? if the series has 20 episodes, and one episode is 1 hour. 20 hours.. 1200 mins. how does it fits in one DVD? or should i say, what kind of dvd are they are using?

DVD are usually measured in GB size and not minutes. Assuming each episode is ~400MB, using a dual layer DVD-R you could fit 20 400MB episodes on the disk.
400MB x 20 = 8000MB 8000MB = ~8Gigs.
Dual Layer DVD-R are each ~8.5Gigs while normal DVD-R's are ~4.7Gigs.

Shrinking that many episodes will DRASTICALLY reduce the quality of the video being watched.