PAL and NTSC Vobs together

I have a collection of PAL and NTSC Vobs
can I join them all together using vobedit and then creat the Ifo file and burn

I have been told that you can’t not Burn PAL and NTSC Vob files together

Is it possible to have two ifo files on the one disk
one for NTSC and one for PAL

Or do I need to convert everything to one Format


DVD Specs do not allow mixing of NTSC and PAL stuff on the one dvd. Some programs claim to allow mixing but all they probably do is re-encode one to the other format.

Depending on where you live and what TV format you have there, best would be to convert to whatever your country uses.

Thanks Chicken Man !!!