Determining AVI vs DVD size

I'm wondering how to determine how many AVI files I can convert to DVD
format and put on a DVD-5 disc without sacrificing quality. The
average size of an AVI file I download is approximately 740MB. Some
movies have two AVI files and I usually burn one movie to a DVD-5 disc
regardless if it comes in one or two files. I cannot tell any quality
difference. How high can I go? What are the determining factors?

Perhaps there is not a (simple) answer to my question.
TIA for any effort.

Take care

"Snapper" <Snapper@fish.net> wrote in message
news:n8ktt3tjic2c4kdjogqoscoknn9s23hn3k@4ax.com...
> I'm wondering how to determine how many AVI files I can convert to DVD
> format and put on a DVD-5 disc without sacrificing quality. The
> average size of an AVI file I download is approximately 740MB. Some
> movies have two AVI files and I usually burn one movie to a DVD-5 disc
> regardless if it comes in one or two files. I cannot tell any quality
> difference. How high can I go? What are the determining factors?
>
> Perhaps there is not a (simple) answer to my question.
> TIA for any effort.
>
> Take care

Think about total playing time and then what you would sacrifice to make a 2
hour 3 hour or more hour on one DVD.