Is it possible to create a video with subtitles? For example, first create an audio with any voice I choose, such as sentences for students, and then create a video that shows just the subtitles for those sentences. The final product would be a video that displays the text while the audio plays. It would be an audio with subtitles, so the students can hear the audio and at the same time watch the subtitles on the video. That is for practicing English or Spanish. And how many codes do I need to do that?