Question 1

Is my video uploaded?

Accepted Answer

No. Extraction runs entirely in your browser with the WebCodecs API. Your video never leaves your device and is never sent to a server.

Question 2

Does this work offline?

Accepted Answer

Yes. Once the page has loaded, all processing happens on your device, so you can disconnect and it still works.

Question 3

Which browsers are supported?

Accepted Answer

Any modern browser with WebCodecs support over HTTPS — Chrome, Edge, and recent versions of Safari and Firefox. A secure context is required.

Question 4

Which video formats are supported?

Accepted Answer

Common containers such as MP4, MOV, AVI and WebM using H.264 or HEVC. Exotic or legacy codecs may be rejected by the browser.

Question 5

Which image formats are supported?

Accepted Answer

PNG, JPEG and WebP. Frames download as a ZIP, and you can also export an MP4.

Question 6

Why remove duplicate frames?

Accepted Answer

Consecutive frames are often near-identical. Dropping them reduces storage and produces cleaner datasets for machine learning and analysis.

Question 7

Is there a file size limit?

Accepted Answer

Videos up to 1 GB are supported. Because processing is local, very large files depend on your device's available memory.

Question 8

Is it free?

Accepted Answer

Yes. It is completely free with no account, no sign-up and no upload.