If you are familiar with Zoom, it is the easiest way to pre-record something for your students. All you need to do is schedule a meeting, start it, hit record, and do your thing. We recommend planning ahead for short (5-10 minute) segments, since you won’t be able to edit your recording extensively in Zoom. (The Zoom recording formats, MP4 and M4A, can be edited in other applications, like Quicktime, ScreenFLow, Camtasia, and iMovie, if you want to give it a try.)
You do have an option to trim the start/end of a Zoom recording via NYU Classes.
1. Navigate to Zoom in your course site
2. Click Cloud Recordings and then click the blue files text next to the class recording you want to edit
3. Click on the recording's play icon
4. Next you should be able to use the scissors icon at the bottom right to trim the playback range
