사용 방법
- 1Upload MP4, MOV, WEBM, or MKV
- 2Pick WebM (alpha for the web) or MOV (ProRes 4444 for editors)
- 3Keep existing alpha, or chroma-key green / blue / white / black / custom
- 4Preview on a checkerboard (WebM) and download
음성 도우미AI 자막이 필요하신가요?무료 온라인 도구
무료 온라인 투명 동영상
VP9 WebM 알파 또는 ProRes 4444
VP9 WebM 알파 또는 ProRes 4444
무료 온라인 투명 동영상
VP9 WebM 알파 또는 ProRes 4444
- MP4
- MOV
- WEBM
- MKV
H.264 MP4에는 알파가 없습니다. VP9 WebM은 Chrome/Firefox, ProRes MOV는 편집기용입니다.
준비됨 — 아래에 파일을 놓으세요.
이 페이지의 특장점
WebM VP9 + alpha
Browser-playable overlay with a real alpha channel. Requires -auto-alt-ref 0.
ProRes 4444 MOV
Editing format with alpha for Premiere / Final Cut. May not preview in the browser.
Solid-color key
H.264 sources have no alpha — key out green/white/black to create one.
자주 묻는 질문
Why can’t you just make my MP4 transparent?
Standard H.264 MP4 has no alpha plane. The pixels are opaque. True transparency needs a format that stores alpha, such as VP9 WebM or ProRes 4444.
My clip is on a white or green background.
Choose that key color. Similarity controls how close a pixel must be; blend softens the edge.
The source already has transparency.
Set background key to “Keep existing alpha” so we re-encode without chromakey.
Safari / iPhone?
VP9 alpha is most reliable in Chrome and Firefox. For Apple editors, download the ProRes MOV.