Are you using the 3.0c update?

http://www.sonicfoundry.com/download/step2.asp?DID=375

If memory serves, it fixes a bug having to do with MPEG-2 bitrates.

///d@

Well I just did the update & I tried to render the aiv file still video pack 5 says it not compatible MUX rate or mpg2 file.
I am going to try DVDit & see if I get the same measage.It would seem to me there templates should work with the 2 most popular DVD authoring programs.
This is what the message says Compatiblity check:items in red are not DVD compatale
1 Mux rate 433200bits/sec
2 Type Mpeg2

>>This is what the message says Compatiblity check:items in red are not DVD compatale
1 Mux rate 433200bits/sec
2 Type Mpeg2<<

That Mux rate wouldn't be compatible , it's too low for MPEG-2 . Yours is just over 0.4Mbs & it needs to be at least 2.0Mbs for MPEG-2. Check your settings are in the millions not the hundred thousands.

My bad i missed a 0 on that # 4332000bits/sec
There now thats what it says.
There are alot of settings i can change with the mpg incoder now using the 3.0c ver but wht setting is going to change the MUX rate.Obviously they did not set this right
in there default dvd template.
Im seting the bitrate to a constant 4000000 bit i dont need much higher then that

With your project loaded choose "File>Render As"
With Save As drop down box select "MainConcept MPEG-2(*.mpg")
With template drop down box select "DVD NTSC" (assuming you're in NTSC land)
Click on "Custom" & choose the modification you need to the bitrate either CBR or VBR.
Click "OK"
Type in the filename you want to save it as.
Click "Save"
It should produce a DVD compliant MPEG file for you to take to DVD Authoring software.

Well thats what i did & it Rixio Vid pack 5 says the mux rate is wrong.
I would aggree with rixo the mux rate seems too low Mux rate & bit rate are 2 diff #
on most ones that rixio says are ok the rate of the mux is much higher then the bit rate but on VV3.0 file the mux rate is only a small jump from the bit rate.
In the custom settings there is a tab calld system look there you see a system bit rate setting.If i move that # higher the mux rate # is then higher so my theroy is that the incress that is given in the system rate is not high enuff to be what rixio would call DVD compatibl.

The system rate should be whatever you have chosen for your maximum bitrate + your audio bitrate.
Typically with VBR settings Max bitrate say 8,000,000 + audio 224,000 = system 8,224,000.

I have used MC encoder with DVDit & DVD Complete without encountering your problem with settings like that.

I haven't used Roxio. Can you import mpg streams or do they have to be elementary streams. If it does support elemntary streams then take your video in as elementary video stream (.m2v or similar) and the audio as .wav fille 48Khz 16bit stereo from Vegas timeline seperately. (Roxio doesn't support compressed audio does it ?)

Well after doing some reading on Roxio site i found this.
Some software do not really perform a disc compatibility check, also the product you referred to almost lets you burn everything onto the disc without verifying that a standaloe player will be able to play it.

VideoPack 5 is intended as a mastering qualtiy software so we have to make absolutely sure that the result is compliant to the standards.

The easiest way of avoiding conversion, though, is setting your video parameters in your source software accrding to the limits that are described e.g. in the manual or the on-line-help.

The only way NOT to remux your files is to prepare propper DVD format. The difference between DVD format and general mpeg2 format are the navigation packs. These are additional data packages with player related informations. Here are also button information in menus stored. Because these "navpacks" (every 0.5 second!) are missing in "normal" mpeg2 files the file needs to be remuxed.
But on your question: The definied muxrate for DVD is 10.08 MBit/s - even if your video bitrate is way below - this is the ONLY correct

So this tells me that MC is not setting the nav packs right.
Here is my fix i render as Mpeg2 but i save as separate streems one file with a m2v file & one mpa file then i open vid pack 5 rixio gives a tool in there to multiplex m2v & mpa into the vob format now my files work just fine & rendering times seem faster.

My bad on last post dont save files as mv2 & mpa & mux them in video pack 5 it will just make jerky videos.Here is the fix for mux rate go to MC addvance setup for mp2 or dvd change the system bitrate to 10080000 then set audio to audio to layer 2 bit rate at 224 & sample rate at 4800 allso under system check box that says align headers i set mine for timesamps on all frams. This has made the most compatible dvd/mp2 files for me i have testd them in a few diff dvd authoring progams Roxio being the most picky. If roxio likes it then it must be right :) Any how i tryd diff audio rates but MC would dump the file with ERR msg when encoding so system rate & audio rate have to match. Anyone know the cosmic foumula for that let me know.

I read somewhere that you shouldn't use an audio rate with AC-3 2/0 above 224Kbs. Above that should only be used for multi (5.1) etc work. Perhaps it's the same for MPEG you shouldn't use >224Kbs in your DVD ??