I built a video background remover that exports real transparency
Finding out that the "transparent video" you exported is actually a black-background MP4 is a special kind of frustrating. It breaks overlays in OBS, composites wrong in editors, and looks flat on product pages. I built
Finding out that the "transparent video" you exported is actually a black-background MP4 is a special kind of frustrating. It breaks overlays in OBS, composites wrong in editors, and looks flat on product pages.
I built RenderAlpha to fix that: it removes the background from a whole video β not just one frame β and exports files that actually stay transparent.
What it does
- Upload an MP4, MOV, WebM or GIF (up to 60 seconds)
- See the background removed on one frame of your clip for free before you sign in
- Export the entire clip with a real alpha channel
The formats that actually matter
- Transparent WebM (VP9 with alpha) β drops straight into web pages and OBS overlays
- ProRes 4444 .mov β for Premiere Pro, Final Cut Pro and After Effects (up to 10 seconds)
- Transparent GIF β scaled to at most 720px, handy for docs and chat
- MP4 on a solid color β when you need a fallback background
No watermark on any export. If a render fails, the credits are refunded automatically.
Privacy
Uploads are stored privately, used only for your render, and deleted after 1 day. Finished videos are kept for 7 days before they are removed.
Try it
Drop a clip at renderalpha.com β the one-frame preview is free and no sign-up is needed for that.
Feedback welcome, especially: how does it handle your footage (hair, motion blur, fast movement), and what's missing from the export options?
Originally published by Dev.to AI. Aggregated on AIWithGhost for educational purposes β full credit and traffic to the original publisher.