Once your video has been captioned, you can download the caption SRT file.
Go to the video you’d like to download the captions for and click the Actions menu, then click Edit. On the edit page you’ll find a download icon underneath the Captions tab. The file type downloaded is an SRT file. It contains the information for timing and other characters.
If you require the plain text of the captions, you can use a online SRT to text document converter online that removes all the extra information. There are several free options such as: https://www.happyscribe.com/subtitle-tools/convert-srt-to-textÂ