← VideoBGNinja

Make a transparent video — WebM with real alpha

A transparent video drops onto any background: your website, an OBS stream overlay, a slide deck, another video track. VideoBGNinja turns any clip of a person into a WebM with a genuine VP9 alpha channel — the background isn't a colour to key out, it's simply not there.

✂ Make my video transparent — free

一Where transparent WebM works

• OBS / streaming — add it as a media source and it floats over your gameplay or slides.
• Websites — <video> with WebM plays with transparency in Chrome, Edge and Firefox.
• Editors — DaVinci Resolve, Premiere Pro and After Effects import VP9 alpha directly.
• Everything else — no alpha support? Use the included green-screen MP4 instead.

二Pro tip: the alpha matte

Alongside the WebM you also get a black-and-white alpha matte MP4. In After Effects or Resolve, use it as a track matte on your original footage for full manual control over the composite — the same workflow studios use, without the rotoscoping.

三Questions

Do I need a green screen or special lighting?

No. The AI understands what a person looks like and separates you from any background, frame by frame with temporal tracking.

What are the limits?

Up to 1 GB and 60 seconds per clip. Free, no account, no watermark.

Does the audio survive?

Yes — your original audio is kept in both the WebM (Opus) and the green-screen MP4 (AAC).

More free ninja tools: remove photo backgrounds · restore old photos · split music into stems