If I understand you correctly, you have 4 DVD's that you want to add to 1 DVD disc.

What you do is this, take each DVD and convert it to DivX (avi). After conversion you will have 4 avi files which is approximate 1GB each, then add your 4 avi files to a DVD disc. You can now play it on your PC or TV.

Here is how to convert it: http://www.dvdcopyplanet.com/divx-movies.htm

Have fun.

Well, compress 4 video dvd to a 2hours DVD, you should note video dvd store all video data in VOB files, so you need to use a right software to reauthor a new 2hours video DVD from all VOB files within your 4 video dvd, you can try RZ DVD Creator, it can make video DVD from any video files(include VOB files, etc), it can fastly burn a video DVD from standard VOB files without re-encode again(the VOB file must have the same profile with the taget video dvd, such as make a 16:9 ntsc video dvd from a 16:9 ntsc vob file), it also can convert any video files to video DVD and burn to any DVD disc(DVD-R, DVD+R, DVD-RW, DVD+RW, DVD-R DL, DVD+R DL, etc), such as compress and burn all VOB files from 4 video dvds to a 2hours video DVD, easy to use, insert your a 2hours dvd disc into your computer dvd burner drive, run RZ DVD Creator, drag and drop all VOB files into the software, if you view a message tip "Source DVD size is larger than CD/DVD disc capacity", press "Yes", then press START button, the software will auto compress all vob files to fit the size of inserted dvd disc, and and you will get a 2hours video DVD from your 4 video dvds, and the burned video dvd can be played well on dvd player. You can yahoo or google search and download RZ DVD Creator, hope it could help you.

DVD-5 is 4.38 gig (4.7 G) of

data equals over 2 hours of video. So u please a good converter and compressor software at

dvd.software.informer.com/download-dvd-converter-and-compressor/

otherwise use DVD-18 (12cm)

DS/DL

15.90 gig (17 G)

over 8 hours

im no longer extremely particular what your attempting to do yet feels like u could desire to compress with some thing like dvd cut back and take a examine out it on a 4.7 disc even though it nonetheless won't greater healthful yet u can get a twin layer disc to burn it on if your computing device burns twin layer disc desire this permits

download dvd converter suite

http://www.macdvdconverter.com/mac-dvd-converter-u...

download a file compressor

I really dont know

avi