A new video format

What if your video could tell you what each viewer was thinking?

It stops for the viewer to choose, answer or try something in the picture, and tells you what each person did.

Sign up freeTalk to the team

Press any video to play it. The ones marked Interactive stop and wait for you.

Our customers

Education and corporate learning providers, and teams making explainer and product videos.

Education providersLessons that stop for every student. Corporate learningTraining people do, not just watch. Explainer videosOne idea, made clear. Product videosDemos and walkthroughs buyers drive.
  • Embed it on your site
  • Or share a link
  • Plays in any browser, on any device

The problem

Most video is a black box.

A video player counts who pressed play and when they left. It can't tell you what they understood, what they wanted, or why they left.

What a video player tells you

The Size Limit, a grade 9 biology lesson, sent to a class of 32

Plays
32
Average watch
6:40
Finished
78%

Most of the class finished. Did they learn it?

What we tell you

A student in class taps an answer on a paused biology lesson: an elephant, a mouse and three choices

The video stopped and asked

"An elephant and a mouse. What accounts for the difference?"

  • It is built from far more cells19
  • Its cells are each much larger11
  • Its cells live for much longer2

11 students think an elephant's cells are bigger than a mouse's. Start the next class there.

Sample results

1.5×

more likely to fail when people only watch and listen, across 225 studies. Freeman et al., PNAS, 2014 5

+6%

higher exam scores when people actively take part. Freeman et al., PNAS, 2014 5

Interactive

video improved learning and satisfaction in a controlled study; the same video without interaction did not. Zhang et al., 2006 6

The video file was built to deliver. Not to listen.

  1. 1991

    Film learns to travel.

    QuickTime packs picture and sound into one file, so a film can leave the studio and play on a computer. 2

  2. 2003

    One file for every screen.

    MP4 becomes the standard. The same sealed file plays on your TV, your phone and your laptop. 2

  3. 2005

    The web learns to listen.

    Analytics make every click count. Marketing, sales and product rebuild themselves around it. 4

  4. Today

    Video still can't.

    Three quarters of mobile traffic is video, and even short videos lose half their viewers. The file can't ask why. 1, 3

  5. 2026

    We gave video its click.

    Video that plays like a film and listens like a web page. Every viewer's choice comes back to you.

How it works

You bring the content.
We make the video.

This walkthrough of our platform is one of our videos. Press play and drive it yourself.

InteractiveYou're Driving Product walkthrough, the 4k labs platform
  1. 1

    Send a brief

    Upload a deck, a script, a recording or a link to your product, and say who it's for.

  2. 2

    Pick a look

    We show you directions built from your own content. You choose one.

  3. 3

    Change anything in words

    Ask for a change to any scene, and tell us where the video should stop for the viewer.

  4. 4

    Publish, then read the answers

    Share the link or embed it. Every viewer's answers land in your dashboard.

Sign up freeOr we make it for you

Who it's for

Who's watching, and what they tell you.

Every one of these is a real video we made. Press play and try it.

Interactive

For training, compliance and sales enablement teams

Know who's ready before it matters.

The viewer
Makes the calls the job asks for and sees what each one costs, inside the story.
You learn
Who is ready, who needs another pass, and which mistake is most common on your team.

The Cost of a Wrong No, fraud and risk training

InteractiveThe CFO Who Wasn't*Compliance training filmFraud and deepfakesA video call from the CFO asks for an urgent transfer. The viewer decides what to check, and sees what each choice would have cost.* An example made by 4K Labs to show the format. Not a customer; not affiliated with or endorsed by KnowBe4. InteractiveThe Helpful Agent*Compliance training filmAI at workAn AI agent reads everything it is given. The viewer decides what to paste, which tool to use, and when a person has to step in.* An example made by 4K Labs to show the format. Not a customer; not affiliated with or endorsed by KnowBe4. InteractiveWhere Does the $100 Go?Interactive lessonFinancial literacyFour parties share the fee on every card payment. Work out who earns most, and why shops still say yes. The Number That Isn't ThereExplainer filmPaymentsHow tokenization works: the number your phone pays with isn't your card number, and what a thief actually gets. Getting Started with Claude*Software trainingAI tools at workA guided tour of a real app, running live inside the video: ask well, pick a model, bring your context.* An example made by 4K Labs to show the format. Not a customer; not affiliated with or endorsed by Anthropic. InteractiveHandle the objectionSales enablementPractice for repsA buyer pushes back, the rep picks a reply, and the buyer reacts to it. You see which reps reach for a discount first.

All 22 videosFor learningFor sales

We call it Video++

Video, rebuilt
out of the web.

Our videos look and play like any video. Underneath, every scene is live web code, written by AI agents. That's why they can stop, respond and report.

.mp4

Video file

Standard since 2003

V++

Video++

4K Labs, 2026

Plays on any deviceYesYes, from a link in any browser
Viewers can act inside itNoTap, drag, type, choose, try
What you learnPlays and drop-off, from the playerEvery choice and answer, per viewer
Different for each viewerOne cut for everyonePaths that branch, links made for one person
3D models, live appsNoBuilt in, and guided
Fixing one lineRe-edit, re-export, re-uploadEdit the scene, publish again

FAQ

Questions, answered.

What is Video++?

Video++ is our name for interactive video that reports back: it plays like a normal video, stops for the viewer to choose, answer or try something in the picture, and tells you what each viewer did. We make it from the content you already have: slide decks, documents, scripts, product pages and recordings.

How is this different from a quiz on top of a video?

Most interactive video tools pause the video and put a question card over it. In Video++ the interaction happens inside the scene: the viewer taps the hazard, drags the part or uses the real app, and the story continues from what they did.

Can I put the video on my own website?

Yes. Embed the player on any page, or share a link. Both report back to the same insights.

Do viewers need to install anything?

No. It opens from a link in any modern browser, on phones, tablets and laptops.

Where do I see the engagement data?

In your dashboard, per video and per viewer: how far each person watched, what they paused, skipped or replayed, and everything they touched, chose, answered or typed. Viewers stay anonymous unless you send them a personal link. Results can also be sent to your learning system as xAPI statements.

Can I still post it on LinkedIn or YouTube?

Yes. Post a short teaser natively and link to the interactive version for the full experience and the answers. Every video also comes with an MP4 up to 4K for platforms that only take files, and captions built from the narration.

Do you make it, or do we?

Either. We produce it for you, or your team uses the platform to make its own.

Talk to the team.

Book a demo and we'll show you one made from content like yours.

Prefer to make one yourself? Sign up free and start from a deck, a script or a link.

What would you like to make?