copying DVD's

[codswallop]

When you buy a pre-recorded dvd it plays on any player.Why is it ,if you copy it onto a DVD+ blank for instance,it won't play on certain dvd players and has to be copied to a dvd- blank?
If you make a copy for a friend how do you overcome not knowing what his player will use +or-?Thanks in anticipation!!!!!

[Ethel]

Because certain players only recognise certain formats.

I have sent copied dvd+ to over 50 different people, and they have always played on their machines.

[pauln90]

Just to confuse matters I always copy DVD's to -R discs and have never had a problem with friends using them.

Some players like + and some like - and some do not like homemade DVD's for some reason.
I have generally found that the really cheap supermarket players are the least fussy.

[codswallop]

Thanks to you both for you replies.Unlike you Ethel I copied onto + for a friend and I guessed wrong!!

[Ethel]

Do you remember to finalise all the disks? If you don't, they have problems playing on other dvd players.

[cptjack]

I tend to find that i get the best compatibility with � r discs {daterwrite titanium}
http://svp.co.uk/products-solo.php?pid=203&pre pg=1 �6.49 for 50 dvd �r,s
i also use dvd shrink and nero to burn take a look at this guide it will help you out
http://www.afterdawn.com/guides/archive/how_to _copy_dvd_with_dvd_shrink.cfm

[codswallop]

Thanks again for all your answers.
Ethel what do you mean by finalise,I don't recall any instruction to do so?