Ah… my miscommunication, sorry. What I meant was, there is a setting that sticks for learners who decide to turn transcripts on/off. It sets a cookie, which is respected for all videos, across all courses on a given Open edX site. There isn’t a setting for educators adding videos to courses.
That’s a harder question, unfortunately… Open edX is run by edx.org, but accepts contributions from the community, and there are several different organizations (including mine, OpenCraft) that make contributions to the platform (see Open edX Service Providers).
But we don’t yet have a centralized way to request features, or to offer bounties for their development.
Searching for “feature requests” on this forum produced this most recent suggestion, and you’ve already posted here, so maybe ask your service provider?