> but my dvd player says cannot play (i tried on several players

> and computers),

 

Is it playing on the other players/computers?

 

There can be lots of reasons why it won't play in your player - It can't handle that brand of DVD blank (some players only accept certain brands), wrong format (-R vs +R), wrong broadcast format (PAL vs NTSC vs SECAM), not a proper DVD at all, etc

 

Does it play on your PC?  And when you look at the disk contents on your PC what are the files you see?  A DVD will have a folder called VIDEO_TS.

 

-paul