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Video contact sheet

A video contact sheet turns a whole video into one image: a timestamped frame every half second. See what it is, why it matters for AI video analysis, and build one from a clip right here.

Updated

Definition

What is a video contact sheet?

A video contact sheet is a single image that shows a whole video as a grid of frames, each stamped with its timestamp. Read it left to right, top to bottom, and you watch the video in a glance: every cut, every product shot, every change of pace.

The name comes from photography. Photographers printed a strip of film onto one page so they could scan every shot at once and pick the keepers. A video contact sheet does the same for moving images: grab a frame at a fixed interval, lay the frames out in reading order, and you have something you can skim, annotate, share and, increasingly, hand to an AI model.

Ours takes a frame every 500ms, so a 10 second video becomes a sheet of 21 frames. That is fine-grained enough to catch a half-second hook or a quick cutaway, and compact enough to read at a glance.

Frame interval

Every 0.5s

A 10s video

21 frames

What you hand over

1 image

Why it matters

Why it matters in the age of AI

Video is the richest format and the hardest one for AI to read. Most models see images far better than they see video. Sending a full video file is slow and expensive, many tools cap the length or only sample a few frames you don't control, and the model can't point back to a moment without a timestamp.

A contact sheet fixes each of those. One image, one request: the model gets the whole arc of the video, in order, at a predictable cost. Timestamps on every frame let it (and you) say exactly what happens at 3.5s. Even sampling means a fast hook at 0.5s isn't skipped because a tool happened to pick frame 24 and frame 96.

It is just as useful for people. Creative teams review dozens of competitor and inspiration videos a week. A contact sheet turns a 30 second watch into a 3 second scan, and it makes a good shared reference when you brief an editor, a creator or an AI video model on what to recreate.

In Shuttergen the contact sheet is the first step of the pipeline. We read the sheet to understand the structure of an inspiration video, split it into scenes on a content board, rewrite the script for your product, then generate new clips scene by scene.

Why not just send the video?

You can, and for deep audio analysis you should. But for structure (hook, pacing, cuts, product reveals, on-screen text) a contact sheet is faster, cheaper and easier to reason about, and the model can cite timestamps back to you.

Example

Build one right now

This is the same component Shuttergen uses. It runs entirely in your browser: press the button and it steps through the sample clip below, grabs a frame every 500ms, stamps the time on each, and stitches them into one downloadable image. Nothing is uploaded.

Video contact sheet · a frame every 500ms

A 9.5 second sample ad becomes a 20-frame contact sheet.

How to

Making a contact sheet that works

  1. 1

    Pick the interval for the video

    Every 500ms suits ads and short-form video, where the hook lives in the first second. For long videos, widen the interval so the sheet stays readable.

    Cap the frame count (we stop at 120) so the sheet is still legible at full size.
  2. 2

    Sample evenly, in order

    Fixed steps give every moment the same chance of being seen. Lay frames out in reading order so the sheet reads like a timeline.

  3. 3

    Stamp every frame with its time

    Timestamps turn a picture into a reference. 'The product reveal at 6.5s' means something to you, your editor and the model.

  4. 4

    Use a file the browser can read

    Browsers only let a page read pixels from a video it is allowed to read: an upload or a host that sends CORS headers. A normal page link (YouTube, TikTok, Instagram) can't be sampled directly, so download it or upload the file.

  5. 5

    Hand it on

    Download it, attach it to a brief, or pass it to a model. Then go a level deeper with a content board that splits each scene into script, direction and visuals.

Shuttergen

Make your first video from one you already love.

Drop in an inspiration video. Shuttergen builds the contact sheet, splits it into a content board, rewrites it for your product and generates the clips.

FAQ

Frequently asked

What is a video contact sheet?
A single image made of frames sampled at a fixed interval from a video, laid out in reading order with timestamps. It lets you (or an AI model) see an entire video at once.
How is it different from a storyboard?
A storyboard is drawn before a video exists, to plan it. A contact sheet is generated from a video that already exists, to study it. The two meet in a content board, which pairs each scene's frames with its script and direction.
Why not use a screenshot of a few key frames?
Hand-picked frames reflect what you noticed. Even sampling shows what is actually there, including the quick cuts and text overlays you would otherwise miss.
Does the video get uploaded anywhere?
Not in the demo on this page. The sheet is built in your browser from the sample clip.
Why does my video link fail?
Browsers block reading frames from videos on other sites unless the host allows it. Upload the file instead of pasting a page link.

Related

Keep reading

Make your first video from one you already love.

Drop in an inspiration video. Shuttergen builds the contact sheet, splits it into a content board, rewrites it for your product and generates the clips.