Exporting Transcripts from Storyline

Here is a free solution that will export a transcript of your captions while playing the course in your browser.

Demo/Tutorial: https://www.youtube.com/watch?v=dVKj8XAV5cA 

Sample course and bookmarklet: http://storymorph.com/bookmarklet/story.html 

I hope this helps.

I typically keep my transcript for each slide in the Notes area. When I export the course to Word, the Notes come out along with the slides. It's been a great practice for me as our Legal team to annual/biannual reviews, and they can easily read through and edit the text.

If you have closed captions, you can export those under the Audio Tools options when you've selected your audio item on a slide. You could then compile your exported captions into a document.