Use apps like Text On Video to overlay your own text onto the MP4.
Catalog IDs for private video libraries. 🔍 How to get the text yourself SHY043H.mp4
If you have the file and need to extract the text or dialogue, you can use these methods: Use apps like Text On Video to overlay
Files generated by specialized recording hardware. SHY043H.mp4
Open the file in VLC Media Player and check Tools > Media Information to see if any hardcoded subtitles or metadata tags exist.