You can clip recordings of Zoom meetings from your Zoom account. You may wan to do this, for example, if you have a long period of waiting before the substance of your session begins.
Be aware, if you have enabled the option for viewers to download a recording, the edits WILL NOT show up in the downloaded files.
Editing Recordings in Zoom
Log into your Zoom account at zoom.us. Select "Recordings" from the menu on the left.
Slide the toggles at the beginning or end of the recording to where you'd like the video to start or finish and click Save.
Note: The sliders are difficult to maneuver over small time periods. You can click on the arrows to move 1 second at a time in either direction. The Playback Range lets you see exactly what your time range will be.