4. Add close captioning by transcribing your video. This is something I have recently begun to do. I hope to write an entire post on this in the future. YouTube gives you the option to upload a transcript of your video and turn it into close captions. This indexes the video for SEO purposes. You can even do a search on YouTube and if the video has a “transcript” the search engine picks up the exact spot in the video where that phrase was mentioned.