Import the video to ProPresenter, Add a text slide and Overlay the text on the video. By setting the video as a Background and adjusting the timing of the slides in the Playlist, you will be able to play the video in the background while text appear in the forefront.  

To add text to a video in Canva, start by logging into your Canva account and uploading the video. Once the video is open in the editor, click on the "Text" tab on the left-hand toolbar. Choose from preset text styles or click "Add a text box" to create custom text. Type your desired message, then use the toolbar at the top to adjust the font, size, color, alignment, and animation. Drag and position the text box anywhere on the video timeline. Once satisfied, preview and download your video with the added text.