I just launched a Mac app that lets you easily burn in text captions and subtitles to video.
Its very simple to use, just set start/end time and text values in a form.
I've been noticing the popularity of text in social media videos. Before I made this I used Adobe Premiere to add captions, but those professional softwares are more expensive and have complicated interfaces. I figured social media marketers would want something simpler that they could use without becoming video editing experts, or be able to task it to an intern who can pick it up in seconds.