Learn how to generate a transcription from your MP3, and add it to your podcast feed in https://transistor.fm/?via=youtube
We are using the new podcast:transcript tag to link to a transcript or a captions file (SRT or VTT).
For generating transcripts we recommend https://descript.com
You can start using Transistor to host your podcasts. There's a 14-day free trial here:
https://transistor.fm/?via=youtube