Extract Video Frames to a Contact Sheet

Turn a video into a contact sheet

Load a video and this tool samples frames from it and tiles them into a single contact sheet — a grid of thumbnails you can scan at a glance to storyboard a clip, pick a cover image, or review scene changes. Everything runs locally in your browser with ffmpeg (WebAssembly); the video is never uploaded.

Choose how frames are sampled:

• Every N seconds (interval) — one frame every value seconds. Set the rate to 2 for a frame every 2 seconds. Best for an even storyboard of a clip.
• N frames per second (fps) — sample value frames each second. Set 1 for one per second, 0.5 for one every two seconds.
• At scene changes — keep frames where the picture changes a lot (a cut, a new shot). value is the sensitivity from 0–1; lower catches more changes (0.3 is a good start). The opening frame is always included.

Then set the grid (columns × rows), the thumbnail width, a background color for the gaps, and PNG or JPG output.

Worked example

Upload a 12-second clip, pick Every N seconds with rate 2, a 4 × 3 grid, 240 px thumbnails and a white background. The tool samples one frame every 2 seconds (6 frames) and lays them into the top of a 4-column, 3-row sheet — roughly 968 × 372 px — with the unused cells filled white. Right-click the result to save it, or use the Download link.

Limits and good to know

• The sheet holds up to columns × rows thumbnails — the first grid's worth of sampled frames. If a high fps or short interval produces more frames than the grid has cells, only the earliest ones are shown; raise the interval, lower the fps, or enlarge the grid to cover the whole clip.
• Grid is 1–8 columns and 1–8 rows (up to 64 thumbnails); thumbnail width is 16–800 px. Height follows the source aspect ratio.
• Scene mode needs visible changes. A perfectly static clip has no scene cuts, so you'll get just the opening frame (padded out to the grid). Use interval or fps for a static screen recording.
• ffmpeg runs in your browser, so very large videos take longer and use more memory — trim or downscale huge files first.

FAQ