Unfortunately, w64 is not an available input format for BDAuthor 3D. I'm using BDAuthor 3D because it allows me to use 5.1-channel LPCM with 3D video and 3D menus. Basically it's everything that I wish DVD Arch had. And, one day, when I purchase a DTS-HD encoder, BDAuthor 3D will accept that as an input file as well.

I'll have to look at how I can convert from w64 to something else. Let Vegas render in w64 and then convert.

Thanks for the response!

For anyone else who might hit this problem (or for me when I forget the solution in a couple of years), there is a work-around.

1) Load 5.1-channel audio into Sony Vegas, as usual
2) Output 96/24 5.1 using Wave64 (.w64) output format
3) Use eac3to (optionally with the UsEac3to GUI interface) to convert from .w64 to .wav. In UsEac3to Use "Run CL" to start the conversion.
4) A warning will be received that the file is too large but the file is properly created
5) Load converted wave file into BDAuthor 3D assets.

I've run a test and this works properly for a 2.4GB wave file. eac3to and UsEac3to are both shareware. My thanks to the authors!

21.GB is a filesize limitation set by Windows; some manufacturers have extended that limit by using a special format w64; the limitations apply to mono or interleaved multichannel WAV files.

VegasPro can render as Multichannel WAV (interleaved) which in your case would be one of the "Multistream....5.1 PCM" choices,
OR
can render as separate WAV files for each channel, so you could pick one of the "MONO...PCM" templates, then make sure in the Custom options you pick "Channels = Mono(Multiple)" which will result in 6 suitably named (xxxx Left.wav, xxxx Right.wav, xxxx Centre.wav, etc...) mono files, each of which can be up to 2.1GB.

Thus your 5.1 mix using 'standard' WAV files can total 12.6GB!

VegasPro allows you to make ans save your own templates to achieve whatever you want.

Maybe your other application BDAuthor 3D accepts such multi-mono files?

Unfortunately, if I added 6 wave files to BD Author 3D, the program would treat those as separate audio options. It would give the user the option to choose any of the six mono audio files as the outputs choices. It's an authoring program so it doesn't have any encoders (or LPCM interleavers) built-in. Think of it as a (much) cheaper Blu-Print with menu creation capability. It allows the user a lot of freedom in creating the underlying programming on the Blu-Ray, which is great with 3D,

But the work-around I posted above works so far. It sees the interleaved w64 file, creates an interleave wav file and properly produces the LPCM disc output. For the second title on the disc I used a 35 minute (3.4GB) .w64 file and converted to .wav with eac3to without any problems. Loaded the file and seems to be working fine.

In general preferences, there is an option:

"Allow Wave Renders up to 4 GB"

Peter

I'll give that a try - thank you!

Peter, Enabling the option for 4GB wave files in Vegas worked perfectly. I just looked at the BD output and audio/video are what I was hoping for.

Really appreciate the help!

Andy