Manually delete recording files
Call View - Recordings Files, it will open the directory location with all the recordings. Delete the files starting with
rec_ which you do not want anymore (for each recording event there are usually two files: a small video in .gif format and a corresponding full video in .mp4 format).
Note: each time that files are deleted the web interface is updated as soon as the browser's reload button is pressed.
Manually delete snapshot files
Call View - Recordings Files, it will open the directory location with all the snapshots. Delete the .jpg files which you do not want anymore.