Video Speed Changer
비디오 속도 조절 (0.25x - 4x)
Drop a video file (MP4, WebM, MOV, AVI, MKV)
🔒 Files never leave your device
⚡ Uses FFmpeg WebAssembly. First run downloads ~30 MB (cached after). Encoding takes roughly 1–5× the video's duration.
사용법
- 1Upload your video
Drop or select a video file.
- 2Configure options
Choose the settings that fit your use case.
- 3Download
Save the processed video to your device.
Video Speed Changer 소개
재생 속도 변경. 슬로우모션 또는 타임랩스 - 모두 browser에서.
업무, 공부, 개인적인 용도 - 이 tool은 필요한 만큼 무제한 무료로 사용할 수 있습니다. Watermark 없음, sign-up 없음, 문서에 ads 없음.
자주 묻는 질문
Are my videos uploaded?
Never. Processing runs entirely in your browser using FFmpeg WebAssembly.
Why is it slow?
Video encoding is CPU-heavy. Expect roughly 1–5× the video's duration for encoding. First-time load also downloads ~30 MB of FFmpeg (cached after).
What's the file size limit?
Depends on your device's memory. Files up to ~1 GB usually work; multi-GB files may crash the tab.