The video is of-course supplement to an answer. The link will be in the comments. The actual answer will be written during the video itself.
There is a user named sehe on SO, who sometimes records his answer finding process, which helps the author deliver more thoughts and techniques, and in some sense inspires other people.
For fun. I got tired of just writing code.
An answer usually gets edited multiple times during the process. Sometimes it transforms to something different completely. Some of the parts might feel like out of context. I believe that video will solve this.
Encourage new users to be more active.
When people see how it is done, and realize there is no magic involved, they usually get more active. I certainly had some problems with confidence in my early posts.
Encourage other users to start their channel.
I'm sure quite a lot of users would be interested to see the review process of their idols.
Even less formal environment to have discussion.
Although Code Review's facilities are already good as is, some of the stuff might be inappropriate. YouTube comments are a good solution for this, in my opinion.
I'd like to show my approach to review and get feedback
Although there is no definitive approach, I believe there are some general guidelines that are good enough.
Draw more people in.
Search engines and the YouTube algorithm itself might increase CR’s visibility.
Is it ethically appropriate?
Where can I get help on making it legally appropriate?
Did somebody try this? Is it a fun experience?
Twitch? People might be reviewing a review during the review! Although people won't get reputation, I generally noticed that few people care. In fact, after the issue getting fixed, people usually remove their comments. Twitch might be a good place to "team-up" on a review.
There is insane storm in my city at the moment. The wind is blowing so strong that it overthrows my voice (the whistling from the windows). It doesn't seem like it is gonna be ending soon, so I guess I have to postpone this for some time. There are people flying, so I can't really get to a better place at the moment. Though I found a post I'm comfortable reviewing live, and now I'm preparing the software for screencasting and recording my comments.
Storm is more or less over.
Very hard to speak fluently and smoothly.
As a non-native Engish speaker it is rather hard to keep talking at consistent rate. I tend to stop somewhere in between of my thought, which makes it very hard to comperehend.
I'm not sure if this is hardware problem, but the sound is full of background noise, which is very annoying. I don't really know how to setup everything correctly.
Simple google search brought me to some software, but none of those were simple click and run. The sound is also a problem, because sometimes it just doesn't recognize the mic.
I found it relatively easy to just write a post, as setting things up for the video can be complicated if different user for the ubuntu machine is not configured.
Overall, I feel less enthusiastic about it, but I'm still inclined towards making a test shot, though it seems like it will take quite a bit longer than I expected. I'll probably write up a script beforehand for the first one.