Real Presenter keeps track of where you triggered the slides. But you can't edit and correct. Another way is to generate web pages and use a text file to trigger the pages, merging with the audio. You can change the times. You need to plan it and put it together.
Video provides similar issues to audio with regard to quality and compression.
The video looks good on campus, but has bandwidth problems going off campus. It has imbedded wave files encoded at 300kbps. NetShow has good quality, but large file sizes. Client hardware becomes an issue. A good Mac couldn't update fast enough for the Stabley video.