How do I burn Multiple Video Files?

Hello,

How do I burn multiple Video files on Nero to blank DVD disc so that I can play it back on a DVD recorder.

Currently I have the 1960's classic comedy series "Bewitched - Season 1". Season 1 contains more than 30 files and when I tried the select all the 30 files and drag and drop approach onto a blank DVD disc and when it finally copied, I tried to play it back on a DVD recorder but it doesn't read the files and it doesn't play......NB:- the files are coded in AVI format.

Can someone please advise me what I am doing wrong?

Also can someone advise me step by step how do burn multiple files so it can be played back on a DVD player.

Thanks !