Glossary

Clipping terms explained

The key terms you'll come across when making clips from long videos — explained briefly and without jargon.

Short

A short vertical video (9:16), like those on YouTube Shorts, Instagram Reels and TikTok. Usually a few seconds up to about a minute long.

Clip

A segment of a longer video. One long video can be cut into several clips that each work on their own.

Hook

A clip's opening — the first few seconds that decide whether someone keeps watching. A strong hook makes the point right away.

Vertical (9:16)

The vertical aspect ratio for phone screens. LucFlow crops clips to 9:16 so they fill the screen on Shorts, Reels and TikTok.

Captions

On-screen text that transcribes what's said — important because many clips are watched without sound. LucFlow generates captions from the video's audio.

Viral Score

An internal estimate of how well a moment works as a standalone clip. It helps sort the suggestions — it isn't a promise of reach.

B-roll

Extra footage laid over the main recording to make a clip more varied.

Split screen

A split image — for example facecam on top and gameplay below. That keeps both layers visible in vertical clips.

API

An interface that lets your own software drive LucFlow directly: create a job, poll its status, download finished clips — no web UI involved. The LucFlow API is included in every plan and bills in the same credits as the studio.

MCP (Model Context Protocol)

An open standard that lets AI assistants such as Claude or Cursor use tools. LucFlow runs an MCP server: the assistant creates jobs, fetches clips or moves scheduled posts — it cannot publish anything, that stays your click.

More on how LucFlow turns your videos into Shorts: YouTube to Shorts.