If you are making an audio or video recording of a speaker, a presentation/event, have you considered those who are hard of hearing or, for other reasons, cannot or don't want to listen to the video?
Even if everyone can hear perfectly, there may be other reasons for having key phrases or terms showing as captions. It might be a training film where important points should be shown on screen as they are spoken.
Why not get the recording transcribed so that everything that is said can be captioned or, alternatively, the transcript is edited so just certain words are shown.
If you plan to record the event, you need to do some sound and visual checks beforehand to make sure every word the person (or multiple participants) says is picked up and nothing gets in the way of the camera. The last thing you want is to find the recording has no sound as the microphone wasn't plugged in, or just as the recording starts someone places an object in the path of the camera lens, thereby obstructing the view. If you are going to have a Q&A session with people in the audience asking questions, have you thought about having "roving mics" so what they ask is also picked up on the recording?
Even if you decide not to subtitle the video itself, having a transcript of the recording as a PDF or a handout will be of great help to many people for reference at a later date.
So, when you next make a recording, imagine how getting a transcript done will reflect positively on your business, from the fact you had made the information accessible to as many people as possible.