Having finished one long video into different parts and sent them individually to DVD Architech can I combine them into one project or does the video have to be put together in Movie Studio and then sent to DVD Architect?
Is their a way I can combine muptiple DVD Architect projects?
You can link separate titles so that the end action of one points to the start of the next. The main difference from a single file is that there will be a slight pause between titles. If this is unacceptable, then you will have to join the titles into a single file in Vegas or other software.
I am talking about the source files for your old projects. You will of course have to start a new project with new menus and the combined data.
The project was too large so I had to break it up into managable parts. The first part was sent to DVD architect and all the other parts will be rendered to a suitable format and add to the project menu. The project will have subtitled parts so what you suggested should work fine for this video.
Linking multiple titles in a DVD looks good in theory, but the results can be dicey on different players. Some older players have trouble finding the next title and go back to the menu instead.
In Movie Studio, you can open multiple instances, copy and paste whole timelines until you have one big project. Or, you can take the rendered titles, combine them in one project, and smart-render. That method goes really fast, and you lose nothing.
Creating a play list will also reach your objective, although there might be a pause when going from one clip to the next, depending on the DVD player.