Most of the videos you come across have been reduced in size from 5-8 GB down to CD size so people can then burn them to CD as either VCD or SVCD. The resolution of the picture (the dimensions) of SVCD is larger than that of VCD. The colour is often a bit better also. A DVD has a much larger image resolution. With larger image resolutions come much larger sizes. So to convert a video to dvd can mean increasing its size.

The resolution of these formats can be seen here: http://www.aluminumstudios.com/digit...reference.html

A VCD can fit about 60 mins, an SVCD perhaps 45-50 mins. A DVD well it depends on the quality settings of both the video & audio, menus, etc.

If you need help with burning or converting see http://www.videohelp.com/ & also http://forum.dvd-guides.com/

A piece of advice, if you have the option, use DVD-RW's until you're happy & confident with what you do.

Some other hints: Movie download issues