How do YouTube and Podcasts change our understanding of "writing" on the web? How is writing different for video? Include a link in your blog entry.
The two-column script for Egleston Children Hospital shows one unique aspect of writing for video. The script is split into a video column and an audio column. In the video column you would write what's happening on the screen. You would only write what's happening visually. In the audio column you would write what's being said. This includes both the voices of characters talking in the video as well as the voice of the narrator. Also, music playing in the background would be noted in the audio column. The audio column describes what's happening aurally. Thus, I assume that scripts for video usually separate visual elements from auditory ones.
For podcasts, the writing appears to resemble just the "narration" writing from video. However, in the narration visual elements are described in words, since you can't really show those elements in audio podcasts.
In addition, in a lot of commercialized podcasts you have to factor in ads that are streamed into it. A popular ad that I always hear is the one for audible.com. These ads are often seamlessly integrated into the podcast. For instance, in the Grammar Girl podcasts, the narrator herself advertises the service, almost as if it were part of the podcast topic/subject. It's very similar to what some radio talk show hosts do.
You pointed out some key differences in the genres for written video and podcasts scripts, such as the two column format and the verbatim script. These are indeed differences from traditional writing.