Transparent Video Checker
Find out whether a WebM, MOV or MP4 really carries an alpha channel. We read the alpha flags inside the file, test whether this browser decodes transparent pixels, and preview it over any background.
Runs entirely in your browser. Your file is never uploaded.
Or test a sample: ·
Open a video to see its container, codec, alpha flags and a live transparency test here.
Which transparent format plays where
| Format | Chrome, Edge, Firefox | Safari (macOS, iOS) | Apple apps and editors |
|---|---|---|---|
| WebM, VP9 with alpha | Transparent | Not transparent | No |
| MOV / MP4, HEVC with alpha | Only Chrome on macOS (system decoder); not Windows, Linux or Firefox | Transparent | Yes (Keynote, Final Cut, AVFoundation) |
| MOV, ProRes 4444 | Not playable | Not for the web | Yes (editing master) |
| MP4, H.264 | No alpha channel at all | ||
On a website, list both: an HEVC-alpha source first for Safari, then WebM for everyone else. The full markup and fallbacks are in our transparent video guide.
Want both files made for you?
Every Charmotion Studio set includes each animation as transparent WebM (VP9 alpha) and MOV (HEVC with alpha), plus a Rive file.
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