MP4, WebM, MOV, AVI, MKV
Preview shows visual edits only. Trim, speed and audio are applied on export.
Free Online Video Editor That Runs In Your Browser
Trim clips, change playback speed, crop to square or vertical, rotate, flip, brighten, add filters and put text on your video — then export a clean MP4. The whole editor uses the FFmpeg engine compiled to WebAssembly and runs locally on your device. No video is ever uploaded, so you can edit private recordings, raw camera footage, or anything you do not want on a third-party server.
Why chatbots and AI video generators can't replace this tool
An AI assistant can generate new footage from a prompt, but it cannot open the video file sitting on your machine, remove a shaky intro, fix a dark clip, speed up a section, or place text over your exact frames. Editing your own media is a private, file-level job — no text prompt can reference your local file. This page does that work deterministically, in your browser, with no guesswork and no watermark.
How It Works
1. Drop or select a video file (MP4, WebM, MOV, AVI, MKV)
2. Adjust trim, speed, rotation, crop, filters, text and audio
3. Click "Export MP4" — FFmpeg.wasm encodes locally, showing real progress
4. Download the finished H.264 video that plays everywhere
Privacy: 100% of processing happens in your browser. Nothing is uploaded. Files never leave your device.
What you can do
Trim — cut the start and end to keep only the part you need.
Speed — slow clips down to 0.25x or speed them up to 2x; audio pitch is corrected automatically.
Rotate & flip — fix sideways phone footage, mirror or rotate 180°.
Square / vertical crop — export 1:1 or 9:16 ready for Instagram, TikTok and Reels, or 16:9 for YouTube.
Resolution — downscale to 1080p, 720p or 480p to shrink file size.
Filters — brightness, contrast, saturation, hue rotation, grayscale, sepia, invert.
Text overlay — add captions or titles in any color, size and position.
Audio — adjust volume or remove audio completely.
Limits & formats
Input: any video FFmpeg can decode (MP4, WebM, MOV, AVI, MKV, and more), as long as your browser can also preview it. Output: MP4 with H.264 video and AAC audio — the most compatible format for phones, social media, and the web. Browser memory is the practical limit for file size; clips up to a few hundred MB work well on modern desktop browsers. Long, high-resolution videos simply take longer to encode.
Is my video uploaded to a server?
No. The FFmpeg.wasm engine runs entirely in your browser tab. Your video file never leaves your device, which is why this tool works offline-capable and handles sensitive footage safely.
What does the free export include?
Everything. No watermarks, no ads, no signup, no file count limit, no resolution cap for the free version because there is only one version — it is free.
Can I edit a video without audio or that has no sound?
Yes. If the source has no audio track, the export simply keeps the video-only result. Unchecking "Mute" and leaving other audio settings untouched preserves whatever audio your file has.
How long does encoding take?
Speed depends on your processor, file resolution and length. A 10-second clip encodes in a few seconds on a modern laptop. Longer 4K footage will take noticeably longer; a progress bar shows the status.
What happens if I select a resolution bigger than my video?
It is never enlarged. The editor only downscales, preserving the original sharpness when your clip is already smaller than the chosen resolution.
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