anyone is able to export in AC3 (5.1) via AC3 Pro? (When I click render nothing happen: no errors, no windows, ecc.)

Sony Vegas 20.0.411

Please see point 31 in https://www.vegascreativesoftware.info/us/forum/vegas-pro-faqs-and-troubleshooting-guides--104787/

The last version of Vegas Pro which included the AC3 Pro module was Vegas Pro 13. The workaround linked in point 31 only works in Vegas Pro 14, 15 and 16 - but sadly no later version. The workaround needs Vegas Pro 13 to be installed in order to source the necessary files for the workaround.

To use AC3 Pro, I copy the entire audio timeline into Vegas Pro 16 (with the workaround applied) and do the AC3 Pro 5.1 render in VP16

BTW, there is no such product as Sony Vegas Pro 20 - please see https://www.vegascreativesoftware.info/us/forum/sony-vegas-vs-vegas--119881/

Thanks for the fast reply. Ok I'll use Voukoder to export in AC3 5.1.

And what about export in FLAC 5.1? Why Vegas sees only 2 channels?

Cheers,

And what about export in FLAC 5.1? Why Vegas sees only 2 channels?

Sorry, but I don't use FLAC so am not in the best position to advise ... except to say that my VP20 only shows 1.0 and 2.0 as FLAC render options.

When this has been raised on the forum over the years, others have suggested that a PCM 5.1 render template can be used (e.g. Sony Wave64 or Wave (Microsoft) if so desired.

Just as an addition to the workaround, in addition to Vegas Pro 13, DVD Architect 6.0 (or possibly 5.2) also needs to be installed as it looks like that DVDA installs the AC3 Pro module that Vegas Pro 13 uses. I've got VP12 installed on a computer without a DVDA installtion, and the AC3 Pro render module does not appear as an audio render option in VP12 whereas it did back in the day when DVDA was installed. On another computer with DVDA 6.0 installed, the AC3 Pro module does appear as an audio render option in VP13.

I don't understand why you have problems. It works for me without problems in SVP13-21. I made a little video testing it.