If you create a transcript file through Otter.ai, Buzzsprout can import and automatically format the file for you. To do this you just need to export the correct file type.
Click "⋮" then "Export Text"
Match these settings exactly:
Take the file exported from Otter.ai and upload it to Buzzsprout. Start by clicking into your episode and then find the "Add a Transcript" button on the right sidebar.
On the next screen, you'll see the button to upload your Otter SRT file.