Does anyone know of another external render plugin that does what Voukoder did, which was to render without having to choose the resolution of the final video? This is very important to me...
Yes Yes Yes John is absolutely right, I use Render+ and it it much more flexible than Vegas templates as you can change the audio codec from AAC. Highly recommended. It is not yet updated for V23 but Wayne is working on it at the moment. If you try to use Render+ with V23 it will give a message that it only use Vegas inbuilt templates. Here is a screen shot of the template with my settings for AV1.