Cutoff Prevention
A Cutoff Prevention is a utilitarian technique often seen in older tennis and YTP where a short and simple sequence is added to the end of a video, usually with the text, "Cutoff Prevention". The "cutoff" in question comes from the fact that older editors (as well as YouTube) tended to chop off the end of videos (citation needed), so this was done to prevent that - the cutoff prevention instead would be cut off and all would go well. Modern editors usually don't do this, and thus cutoffs are often added as a humorous in-joke to end the video. The only time cutoff preventions are still used for their intended purpose is for X-Second Tennis (as timing down to the frame is often important) or when intentionally using older software.
Usage
Simply add text that reads "cutoff prevention" to the end of your video. This can be as simple or as complicated as you like. Feel free to be creative with it, but remember that part of it may be cut off.
Notable Examples
laromande's Cutoff Prevention Collab provides many great examples of creative cutoff preventions.
Many 1-second collabs will have all of the cutoffs of each video compiled together as a separate product. As these cutoffs are usually deleted for the final, seamless compilation, and rounds tend to be private/unlisted due to their brevity, this is usually the only way to see them.