If you want the transcription - or the text version - of any of your Audio or Video, that's what this feature is for.

When you click on the "Transcribe" link next to any audio (mp3) or video (mp4) file below, you are taken to another screen where you need to choose the language that the audio or video is in.

And then you submit the form which sends the file to Amazon's AWS Transcribe service. And a few minutes later, if you go to the "Transcriptions" page, once the processing is complete, you will be able to click on a link which will display the text that AWS transcribed from your audio or video.