Software that recognizes mood is apparently used in call centers – could be used to derive metadata for pre-post logging (and story derivation).  Imagine a keyword collection for “happy” or “stressed” or whatever mood happens to be demonstrate in the audio content. I’m not sure if the technologies are related but Affectiva have demonstrated emotion-detecting software in the past.
With speech-to-text, keyword extraction, mood extraction the basic logging of reality and documentary could be done in pre-post and handed to the editor.