Every time someone does a talk/records a video, it helps spread the word about your content if your video keeps getting shared.
If you have a blog, a good idea is to add a simple post to tag your new video. It gets double Google juice if you:
Here's a simple example:
Figure: A simple blog post with your video embeded will help expand the audience for your video/content
You could go the extra mile and explain your whole talk for an even better result. This gives you an opportunity to communicate and explain your thoughts to your audience, besides using all the relevant keywords you can in a single blog post.
Plus, you have the added benefit of having visual/audio content through the video, as well as written content. That way, you are really catering and communicating to all types of learners, readers or consumers your audience might include.
Figure: A blog post that includes a video, keywords and the complete thought process will be seen with more authority by Google and give you more views