Transition Library

Match cut, jump cut, J-cut/L-cut, wipe, dissolve — video-editing craft technique

Unify Dynamics LLC

Documentation

Tools9read-only

Sign-inNoneno account, no key

Data keptNoneprocessed in memory

PriceFreeoptional Pro limits

StatusLiveMCP + REST

Works withMCP · RESTany agent

Try asking

Real questions, and the tools your agent calls to answer them.

What's a match cut?

Tools called

transition_info

What transitions do you cover?

Tools called

transition_list

What categories of transitions are there?

Tools called

category_list

What sound-led transitions do you cover?

Tools called

transitions_by_category

What transition should I use to show time passing?

Tools called

when_to_use

What's the difference between a J-cut and an L-cut?

Tools called

jl_cut_explainer

What's the difference between a match cut and a jump cut?

Tools called

match_cut_vs_jump_cut

How long should a dissolve be?

Tools called

transition_duration_guide

What's the 180-degree rule?

Tools called

transition_glossary

About

Transitionlib is a fully local, hand-curated video-editing transition and effects glossary. transition_info explains one of twelve named transitions/cuts in full (description, when to use it, mood/effect); transition_list shows all twelve. category_list groups them into five categories (cut-based, dissolve/fade-based, graphic/wipe-based, movement-based, sound-led), and transitions_by_category lists every technique in one category. when_to_use suggests 1-3 techniques for a described editorial goal. jl_cut_explainer is a dedicated deep-dive clarifying J-cut (audio leads) vs L-cut (audio trails), with the letter-shape mnemonic. match_cut_vs_jump_cut clarifies that a match cut connects two different things through similarity while a jump cut disrupts continuity within the same scene. transition_duration_guide gives typical duration ranges for dissolves, fades and wipes. transition_glossary defines cutaway, insert shot, montage, continuity editing, eyeline match, the 180-degree rule, diegetic sound, b-roll, smash cut. Every technique is described as general craft, not tied to any specific copyrighted film or branded editing software. Keyless; fully local; zero upstream calls; nothing stored.

Sources: Hand-curated from widely taught general film/video editing craft and terminology — not tied to any specific copyrighted film or branded editing software; fully local, zero upstream calls

Privacy

The publisher, Unify Dynamics LLC, states that tool inputs are processed in memory and not retained.

Data not collectedNo account, no profile, no stored prompts or results.

What it can do

9 tools, grouped by job. Every one is read-only or compute-only.

OpenAPI

Transitions4 tools

Transition infoFull explanation of one named transition or cut: description, when to use it, and mood/effect.
Transition listAll twelve named transitions/cuts with a one-line description and category.
Category listThe five transition categories (cut-based, dissolve/fade-based, graphic/wipe-based, movement-based, sound-led) with how many techniques are in each.
Transitions by categoryEvery technique in one category.

Guidance2 tools

When to useSuggests 1-3 techniques for a described editorial goal, keyword-matched against each technique's stated when-to-use and mood.
Transition duration guideTypical duration ranges for a quick/standard/slow dissolve, a fade to black, and a wipe, each with when that length fits.

Deep Dives & Reference3 tools

Jl cut explainerDedicated deep-dive on the commonly confused J-cut vs L-cut: which one leads with audio, which one trails audio, the letter-shape mnemonic, and a…
Match cut vs jump cutClarifies match cut (connects two DIFFERENT things through similarity) vs.
Transition glossaryDefines editing terms: cutaway, insert shot, montage, continuity editing, invisible cut, eyeline match, the 180-degree rule, diegetic sound,…

Information

PublisherUnify Dynamics LLC

CategoryDesign & creative · Reference

LanguagesEnglish

Built forGlobal

CompatibilityAny MCP client · any agent · REST

Version0.1.0

MCP endpointhttps://transitionlib.connectorbay.com/mcp

REST APIopenapi.json

SupportGet help · Status

CountryWorldwide

Documentation

What Transitionlib is for

"What's the actual difference between a J-cut and an L-cut?", "what transition should I use to show time passing?", "what's a match cut vs a jump cut?" — a video-editing craft reference for the vocabulary and technique behind how cuts and transitions actually work, explained as general editing knowledge rather than tied to any one piece of software or a specific film.

What it does

transition_info explains one of twelve named transitions and cuts in full — a straight cut, dissolve, fade to black, wipe, iris, match cut, jump cut, whip pan, J-cut, L-cut, cross-cutting/parallel editing, and match on action — with a description, when to use it, and its mood/effect; transition_list shows all twelve. category_list groups them into five categories (cut-based, dissolve/fade-based, graphic/wipe-based, movement-based, sound-led), and transitions_by_category lists every technique in one of them. when_to_use suggests 1-3 techniques for a plain-language editorial goal — showing a passage of time, hiding a jump in time within continuous action, heightening tension between simultaneous events, softening a scene change, connecting two related ideas, or adding energy and pace.

jl_cut_explainer is a dedicated deep-dive on the pair almost everyone mixes up: a J-cut's audio leads into the next shot (you hear it before you see it — the shape traces a J on a timeline), while an L-cut's audio lingers after the video has already cut away (the shape traces an L) — with the memory aid "L-cut lingers, J-cut jumps ahead." match_cut_vs_jump_cut clarifies the other commonly confused pair: a match cut connects two DIFFERENT things through visual or motion similarity, while a jump cut disrupts continuity within the SAME ongoing scene — opposite intents that happen to share the word "cut." transition_duration_guide gives typical duration ranges for a quick, standard, or slow dissolve, a fade to black, and a wipe. transition_glossary defines the surrounding vocabulary — cutaway, insert shot, montage, continuity editing, invisible cut, eyeline match, the 180-degree rule, diegetic sound, b-roll, smash cut.

What it is not

Not tied to any specific copyrighted film, show, or branded editing software — every technique is described as general film/video editing craft, the kind of vocabulary taught across editing courses and reference books broadly, not a citation of any one work. When-to-use guidance is a reasonable starting point for a described goal, not a rule — plenty of great editing intentionally breaks convention.

Privacy policy

Transitionlib — Privacy Policy

Effective 24 September 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What Transitionlib is. Transitionlib is a connector (an MCP server and REST API) that AI assistants and personal agents call on your behalf for a hand-curated video-editing transition and effects glossary. You interact with your assistant; the assistant sends us only the arguments needed for that one lookup.

What we receive. The arguments of each tool call — a transition name, a category, a described editorial goal, or a glossary term — the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant, and a Pro API key if you have one), and standard server logs.

Everything is answered from a bundled, hand-curated reference and nothing is stored. No request is forwarded to any third party — there is no upstream call at all, live or otherwise — and no query is logged in request bodies, recorded, or used to train anything.

What we do not receive or store. We do not receive your conversation with the assistant or your name, and we do not build a profile from your queries: each request is answered independently and nothing carries over between requests. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting-provider access logs, which contain IP addresses and request paths but not request bodies, are retained for up to 30 days for security and abuse prevention.

Sub-processors. None — the entire dataset is bundled with the server and answered locally. Hosting: Vercel (United States regions).

Legal bases and your rights. Our processing is necessary to provide the service you request through your assistant. Because we store no personal data beyond short-lived logs, requests to access, correct or delete personal data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. We do not sell or share personal information and do not use your data to train models.

Children. Transitionlib is a general-audience service operated by the adult using the assistant.

Changes. We will post changes here with a new effective date.

Terms of service

Transitionlib — Terms of Service

Effective 24 September 2026. These terms govern use of the Transitionlib connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

The Service. Transitionlib returns a hand-curated, fully local video-editing transition and effects glossary — named transitions/cuts, category browsing, a use-case matcher, and dedicated explainers for commonly confused pairs. It is accessed through an AI assistant or directly over MCP or HTTP.
General craft technique, not tied to any specific work. Every technique described by the Service is general film/video editing terminology and craft, independently described for this Service. It is not affiliated with, and does not claim to describe, any specific copyrighted film, show, or branded editing software.
Guidance, not a rule. When-to-use suggestions are a reasonable general starting point, not a requirement — they don't guarantee a particular edit will work for your specific footage or story.
Acceptable use. Automated use within the published rate limits is welcome.
Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time.
Data. Our Privacy Policy describes what we process. In short: your query is answered from a bundled reference, and nothing is stored.
Pro keys. Optional Pro API keys are issued at our discretion, are personal to the holder and may be revoked for abuse.
Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss or damage arising from use of, or reliance on, the Service. Our total liability is limited to US $100.
Governing law. California law; venue in San Mateo County, California.
Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/transitionlib

Support