USE CASE / CLIPPING AGENT
1 long video.20 ranked shorts.One API call.
AI video clipping API. CHAIN scoring on every moment. Multi-aspect output with captions baked in. Drop a long podcast, webinar, or sports broadcast — get back 10 to 20 ranked clips for TikTok, Reels, YouTube Shorts.
1 → 20 long video to ranked shorts CHAIN scoring 5-dim ranker 9:16 · 1:1 · 4:5 · 16:9 multi-aspect output

TRUSTED BY PRODUCT TEAMS SHIPPING VIDEO AT SCALE






FEATURED CUSTOMER
20× shorts per long upload
How Superbit scaled UGC clipping across 6 content types on FastPix.
Superbit built a Gen-AI-powered UGC platform on FastPix Clipping Agent. Long uploads from creators across podcasts, sports, news, lectures, agencies, and YouTube long-form get processed at scale — ranked, captioned, brand-templated, ready to publish.
Read the full Superbit case study →FEATURES
Everything you need to build clipping into your product.
FastPix Clipping Agent is the API layer underneath the next OpusClip, Submagic, or in-house clipping pipeline.
Scoring
CHAIN scoring on every moment
5-dimension ranker: Contextual + Hook + Action + Intensity + Narrative. Every clip carries its score so you can rank them in your UI.
{
"C": 0.92,
"H": 0.88,
"A": 0.71,
"I": 0.84,
"N": 0.79
}Rendering
Multi-aspect rendering, one call
9:16 for TikTok / Reels / Shorts. 1:1 for Instagram feed. 4:5 for Instagram. 16:9 for YouTube + LinkedIn. Pass the array.
aspect_ratios: [
"9:16",
"1:1",
"4:5",
"16:9"
]Captions
Captions baked into every clip
In-Video AI generates animated captions in 50+ languages. Default style optimized for short-form retention. Customize via brand template.
captions: {
burn_in: true,
languages: ["en","es","pt"],
style: "short_form_v1"
}Branding
Brand templates for the whole flow
Logo, intro, outro, font, color, caption style. Apply at clip-generation time so every clip ships ready to publish in your customer's brand.
brand_template_id:
"bt_acme_v3"
// logo + intro + outro
// + font + colorsWebhooks
Webhook delivery. No UI to babysit.
clipping.ready fires with the ranked clip list. Each clip has its playback_id + CHAIN score + target_platform. Hand off to your scheduler.
{
"source_asset_id": "src_abc",
"clips": [{
"playback_id": "clip_xyz",
"chain_score": 0.91,
"aspect_ratio": "9:16",
"target_platform": "tiktok"
}]
}Distribution
Multi-platform distribution
Simulcast push from any clip playback_id to TikTok, X, YouTube Shorts, Facebook, Instagram, LinkedIn in parallel.
simulcast: [
"tiktok",
"youtube_shorts",
"instagram_reels",
"x", "facebook",
"linkedin"
]SECURITY, COMPLIANCE, AND PARTNERSHIPS
HOW IT WORKS
From long video to ranked shorts in 4 minutes.
The Clipping Agent pipeline is specific. This is exactly what happens between your POST and your webhook.
Long video upload
Your customer uploads a podcast, sports broadcast, or webinar. POST /v1/on-demand kicks off the pipeline with the clipping_agent flag enabled.
POST /v1/on-demandCHAIN scoring
Clipping Agent scores every moment across 5 dimensions — Contextual, Hook, Action + pacing, Intensity, Narrative — to rank candidate clips.
~3 minMulti-aspect render
Top-ranked moments render in the aspect ratios you requested (9:16, 1:1, 4:5, 16:9) with captions baked in and your brand template applied.
~1 minWebhook delivery
clipping.ready fires with the ranked clip list. Each entry has its playback_id, CHAIN score, and target_platform for hand-off to your scheduler.
clipping.readyDistribution
Simulcast push to TikTok, YouTube Shorts, Reels, X, Facebook, LinkedIn in parallel — ranked by CHAIN score, paced by your scheduler.
6 destinations~4 minutes : long video → ranked clips ready to ship. Upload 200ms · analyze ~3 min · render ~1 min · webhook fires · distribute on schedule.
WHAT TEAMS ARE FIGHTING WITH
Three things every team shipping clipping hits.
Long-form is underutilized because manual editing doesn't scale.
One long video is 20 social posts worth of value. Editing each by hand is impossible. Hiring a clipper is $2,700+/mo per show.
OpusClip and Submagic are apps. You're building a product.
If you're building a creator tool, an agency platform, a podcast SaaS, or a content factory, you need clipping AS a feature INSIDE your product. The apps don't expose it.
Manual clip selection misses what AI gets right in 90 seconds.
Every clip needs to score for hook + narrative + intensity + aspect ratio + caption style. CHAIN replaces a clipper's gut feel with a model that runs at platform scale.
SHIP IN THREE CALLS
Get your first 20 clips back in under five minutes.
Conventional shapes shown. For exact parameter names and response shapes, see fastpix.com/docs/reference.
// 1. install
npm install @fastpix/node
// 2. upload long video + enable Clipping Agent
const fp = new FastPix(process.env.FASTPIX_API_KEY);
const asset = await fp.assets.create({
source_url: longVideoUrl,
clipping_agent: {
enabled: true,
aspect_ratios: ['9:16', '1:1', '4:5'],
clip_duration: [8, 120],
},
});
// 3. subscribe to clipping.ready webhook
await fp.webhooks.create({
url: 'https://yourapp.com/hooks/clips-ready',
events: ['clipping.ready'],
});
// 4 minutes later: 20 ranked clips arrive at your webhookWHO BUILDS THIS
Products that ship clipping as a feature on FastPix.
Podcast platforms
1 podcast → 20 ranked shorts ready for TikTok, Reels, YouTube Shorts.
Creator tools
Build the next OpusClip on FastPix API. CHAIN scoring exposed end-to-end.
Agencies
Process client long-form at scale. Save the editor seat cost across every account.
Sports platforms
Live + replay highlights ranked by CHAIN intensity score.
News publishers
Long broadcast → social-ready cuts of every moment that matters.
EdTech / lectures
Long lecture → study-ready shorts ranked by hook + narrative.
Marketers / brands
Webinars → conference clips → ad creative at scale.
YouTube long-form
Long video → vertical shorts published while the long is still trending.
A WEEK IN THE LIFE
What shipping clipping on FastPix looks like.
Monday: integrate. Tuesday: clips arrive. Friday: the editor time savings show up in the report.

Casey, engineer at an agency platform, ships AI clipping into the app in six lines. A customer uploads a long podcast. clipping.ready is wired.

Avery, the agency client, gets 18 ranked shorts four minutes after upload. Captions baked. Brand template applied. Every clip is ready to schedule.

Maya, the content lead, reports 47% editor-time saved per show. CHAIN-top clips drove 3× more views than manual cuts.
OpusClip and Submagic are great products. You're not building one of those.
You're building a product that ships clipping as a feature. That's a different problem and it needs an API, not an app. We are the API.
Talk to engineeringDEVELOPER FAQ
AI video clipping API: how to ship it.
How is FastPix Clipping Agent different from OpusClip API?
OpusClip is launching API access for their workflow. FastPix Clipping Agent is the infrastructure layer. You control the UI, the brand, the distribution, the model parameters. Same per-minute economics as the rest of your video stack.What is CHAIN scoring?
5-dimension ranker: Contextual + Hook + Action and pacing + Intensity + Narrative style. Every clip carries its 5 scores. Surface them in your UI to let your customers rank or filter.Does the Clipping Agent work for sports and news, not just podcasts?
Yes. CHAIN scoring works across content types: vlogs, sports, interviews, explainers, lectures, webinars, news broadcasts. Pass source_type metadata to tune scoring per content type.Can I clip live streams in real-time?
Yes. During a live stream, call fp.live.clip() with timecodes; clip.playback_id is on CDN immediately.
THREE WAYS TO GET UNSTUCK
Whatever kind of help you need, there is a path.
ENGINEERING SUPPORT
Talk to a video engineer.
Stuck on the Clipping Agent flag, a webhook signature, or a CHAIN-scoring threshold? Reach the engineering team directly. Response within hours.
Contact engineeringINTEGRATION HELP
Docs, code samples, video tutorials.
Self-serve resources for Clipping Agent integration. Quickstart guides, SDK examples, webhook signature verification samples.
Browse the docsSOLUTION ARCHITECT
Plan the rollout with a human.
Building creator-tool, agency, or platform-scale clipping? Book a session with a FastPix solution architect.
Join the Slack communitySupporting reading.
How to build video in a content creator platform like Kajabi faster
Tutorial — embed end-to-end video inside a creator-platform UI without owning the encoding or analytics layer.
Read the tutorial →Video clipping using API
Blog — the API shape for programmatic clipping: source IDs, in/out timecodes, multi-aspect outputs, webhook delivery.
Read the blog →What is instant live clipping
Blog — sub-second clip generation during a live stream. The producer-side flow and the engineering trade-offs.
Read the blog →Clip-to-publish for live sports + news
Coming soon — end-to-end shape of a live broadcast clip pipeline pushing to TikTok / Reels / Shorts in parallel.
Read more →Auto-clipping endpoint for creator platforms (not OpusClip)
Coming soon — why building auto-clipping inside your product is a different shape from the OpusClip / Submagic app experience.
Read more →Build the next OpusClip-class product
Coming soon — API-vs-app deep-dive: what you give up and what you gain by owning the surface area.
Read more →AI video clipping API CHAIN scoring for VOD and live
Coming soon — how CHAIN scoring shape changes between long-form VOD and live broadcast clipping pipelines.
Read more →Building AI demo reels with the clipping agent endpoint
Coming soon — pattern for assembling editorial demo reels automatically from a long-form library.
Read more →How CHAIN scoring works: 5 dimensions per clip explained
Coming soon — the 5-dimension ranker (Contextual / Hook / Action / Intensity / Narrative) broken down with examples.
Read more →Five-minute quick-start
Docs — sign up, hit the endpoint, ship. The shortest path to your first clipping.ready webhook.
Open quick-start →Full API reference
Docs — every endpoint, every parameter, every response shape for the Clipping Agent + VOD + Live APIs.
Open reference →Webhook reference
Docs — every event FastPix emits with sample payloads, signature verification examples, retry semantics.
Open webhooks →Code samples on GitHub
GitHub — sample apps and SDK examples across Node, Python, Java, Go, Ruby, PHP, .NET.
Open GitHub →Slack community
Community — talk to FastPix engineers and other developers shipping clipping at scale.
Join Slack →Service status
Status — real-time uptime, regional health, and incident reports for the FastPix platform.
Check status →