https://www.gamespot.com/articles/skyrim-for-switch-supports-video-capture-and-why-t/1100-6455023/

A big new update for the Nintendo Switch recently added the ability to record and save videos of your gameplay. It's a pretty neat feature, and though it's been available on competing systems for a long time already, it's cool to see it come to the Switch. However, only a small number of titles supported the feature when it arrived, and they were all Nintendo games. Now, the first third-party game to support this feature has been revealed.

Bethesda's The Elder Scrolls V: Skyrim is the first non-Nintendo game to offer video-capture support. Vooks discovered this feature is added after downloading the day-one update. Skyrim launches for Switch on November 17, so everyone will get to try it soon. We tested this feature and found that we were able to capture up to 30 seconds of video.