Audio to Auphonic.com for post production and mp3, video, and snippet transcribe if desired. Video to YouTube, turn on closed captioning, down to elipses and transcription.
Select what you want and copy.
Having the text can make it easier to produce content first through talking and recording then taking the auto transcribe and cleaning it up through edit.
Warning this is auto produced with a time stamp. So its only your first draft.
Another place I just learned about is at Otter.ai . Otter is free and includes 600 minutes of transcription per month.