When going to render the sound of my video project I am told I should render to AC3 and let DVDA marry it to the video but... There are two AC3 'types' Dolby Digital AC-3 Pro and Dolby Digital AC-3 Studion. Both are described as 192kbps, 48,000Htz, 24bit Stereo - so what's the difference?

They're both the same. But Pro lets you change more settings.

Thanks, Edward