The Golden Rule in any audiovisual experience is user control.
For both embedded and channel (e.g. YouTube) videos, "Try to give the users the title, some caption description, and the overall length of the video" (346). Although the book doesn't use the term, this kind of information is called meta information or metadata, which Wikipedia defines as "data [information] that provides information about other data."
A video for the Atlanta Community Food Bank's Hunger Walk/Run could use some help in this area.
These two recommendations are probably the most important points made in this section.
A text version of the audio track makes your video content more search-friendly, accessible, and discoverable.
Like the potato peeler example, this is a case where doing the right thing for people with disabilities ends up helping everyone.
This will only happen if you plan for it. As the authors state, "Like good lighting, talent, and equipment, providing video alternatives should be just another facet of producing quality video" (347).