DVD5
DVD5 is a single sided single layer DVD that stores up to about 4.7 GB = 4 700 000 000 bytes and that is 4.38 computer GigaBytes where 1 kilobyte is 1024 bytes(4 700 000 000B/1024 = about 4 589 843KB/1024 = about 4485MB/1024 = about 4.38GB) . Video DVD, DVD-R/W and DVD+R/W supports this format. Often referred to as "single sided, single layer".
DVD9
DVD9 is a single sided dual layer DVD which can fit up to 8.5 GB or 7.95 computer GB which many commercial video DVDs are using today (a DVD9 is basicly two pressed plastic DVD5s pressed together, they are not burned). Video DVD supports this format but DVD-R/W and DVD+R/W does not support this format. View DVD9 to DVD5 Converter.
DVD10
DVD10 is a double sided single layer DVD. Video DVD, DVD-R/W and DVD+R/W support this format. Effectively this means that DVD10 is a dual-sided DVD5 and can hold 8.75 gigabytes of data with 4.38 gigabytes on each side. Two-sided discs need to be flipped over in order to access the other data side. Unfortunately many blank DVD media advertisers mislead customers to believe that these discs are actually blank DVD9 discs in hope that they could copy their dual-layer discs directly to blank discs.
DVD18
DVD18 is a double sided dual layer DVD which can fit up to 17 GB or 15.9 computer GB which some commercial video DVDs are using today (a DVD18 is basicly four pressed plastic DVD5s pressed together, they are not burned). Video DVD supports this format but DVD-R/W and DVD+R/W does not support this format.
There will be a problem that you will ask that: whether the four format can change from one to another.My answer is yes.
there are a lot of software can realize your dream, for example xilisoft dvd ripper can realize all the four format transfering. it provides much convience for your life. Of course there is still other software. I won't list it here for you
