Can someone please help me,

I have just bought some blank dvd-r from tesco (8x)(4.7gb),

and i tryed to burn some short videos using realplayer but each time i add them to the play list it says 'will

not fit'.but some of the videos are only about 1500kb which is fcuk all.

So i can't work out what to do?

Does anyone know how and what to do for burnind dvd-r.

Cheers