May I ask, are these TS folders ones you downloaded via torrents or ones that were created after processing a video file you downloaded via gnutella on your computer?

I get the impression perhaps you are trying to burn a 8.5 GB dvd to a 4.7 GB disk. In actual fact they are not the true sizes. 8.5 GB disks fit about 7.6 GB (a little bit more) & 4.7 GB disks fit about 4.37 GB.