You can request an SRT file with a time-coded transcription of your video for a small additional fee. You can upload the SRT file to Facebook and YouTube with your video. The SRT file is human-generated, as opposed to the computer-generated caption option on most video and social media platforms, which means it is more accurate. Closed captioning is important (and sometimes required) for helping the hearing-impaired understand your video. But it is equally important for your entire audience because many people prefer to watch videos with the sound turned off (because they are in the office or other environments where sound would be a distraction).