The Browser AI

video frame capture

capture frame

Export a JPG or PNG frame from a video at a selected timestamp. Powered by ffmpeg.wasm in a dedicated Web Worker, video is processed locally only; compression results are previewed with HLS.js.

Loading video frame capture tool…

What is video frame capture suitable for?

Video frame capture extracts a cover image, preview image, or material frame from a local video. The tool reads a selected timestamp and exports JPG or PNG with ffmpeg.wasm.

The first version uses a time input rather than a frame-by-frame picker. If the timestamp is beyond the video length, processing may fail.

Supported formats: MP4, MOV, WebM, AVI; single file limit: 500MB.

How to use video frame capture

  1. Step 1

    Select video

    Upload the video to capture from.

  2. Step 2

    Enter timestamp

    Enter a time such as 00:00:03 and choose the image format.

  3. Step 3

    Preview and download

    Check the captured frame, then download JPG or PNG.

FAQ

What timestamp format should I use?

Use HH:MM:SS, such as 00:00:03.

Should I choose JPG or PNG?

JPG is usually smaller; PNG is better when you need lossless image output.

Will frame capture upload my video?

No. The video is processed only in the local browser.

Technology and data sources

  • ffmpeg.wasm — Official FFmpeg project documentation for running FFmpeg in the browser.
  • Comlink — Open-source RPC library for communication between the page and a Web Worker.