Cameras with microSD card & Reolink NVRs (The actual interface will vary depending on the model).
Go to the Playback page in the Reolink Client, select one camera and click the cut button on the windows.
Drag the scissors to choose the start time and end time of the video clip you want. indicates the start time and end time of the selected video.
Click the save button at the top of the window to download the selected video clip.