wrong size for svcd in Nero

[Gourry]

Hi,

I`ve reencoded some svcd`s, but when I try to burn (about 800 mb)them Nero tells me that they fill up 89min.
I have used CCE 2.5 to reencode them and a few multiplexer to join the sound and several parameters with cce, but nothing changed.

[setarip]

So what's your question?