[gsmyth79]

They are both ~4.7 GB, but a full DVD5 is 4.36 GB. So It's just over the limit of a DVD5. If you compress this, you will lose no quality, practically speaking.

You can use DVDshrink to compress to fit on a DVD5. There's no need to burn a $3 disc when it's only going to be a little over half full.

The reason it was originally seeded this way was because the original author didn't want to compress the video at all. It came to an inconvenient size at the end (eg barely over the soze of a DVD5 for each set), but he's seeding it out in the best possible quality and letting the downloaders do what they want with it after they get it.

And what sadu said is right. Say you download 2 DVDs that are only ~1.5 GB each. It's actually a real pain in the ass to get them both on the same DVD because you need to reauthor the entire thing. With blank media so cheap nowadays, thankfully that's not necessary.