when to use full processing mode vs. direct stream copy in VDubMod

[Questmark]

I'm a little confused about what these two different settings do, and I haven't been able to find anything that explains it. It's sort of presumed knowledge in all guides- they tell you to do one, or the other.

Direct Stream copy is obviously much faster, but is it only good for certain things? What does "full processing mode" do that "direct stream copy" doesn't do?

Frequently, I'm simply demuxing avi's and then encoding them in tmpgenc,in order to make a DVD. Currently, I'm demuxing a ogm, saving the video as an avi, editing it, and then encoding in tmpgenc. I have an mkv video I'd like to put through the same process eventually as well.

Any help understanding the difference between these two would be great, thanks.

[Baldrick]

direct stream copy just copy the video, useful if you are only cutting,joning,muxing,demuxing. you can't add any filters or convert to some another video format.