Video Filter - Crop, Rotate & Adjust Video Colors Online — Crop to a ratio or custom size, rotate or flip, apply one-click filter presets such as grayscale, sepia, vintage, blur, sharpen, negate and vignette, and fine-tune brightness, contrast, saturation and hue. All processing is done locally in your browser , so your files are never uploaded to any server and your privacy is fully protected.
Supported input: Videos using open royalty-free codecs such as VP8/VP9/AV1/MPEG-4/FFV1 (WebM, MKV, MP4, MOV, AVI containers). Output format and codecs are selected below; every output is re-encoded locally in your browser.
First use loads an ~30MB video processing engine into the current browser. It is cached and reused afterwards, so please be patient.
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Click to select or drag and drop a video file
Supports WebM, MKV, MP4, MOV, AVI and other common formats; under 500MB recommended
Crop (crop width:height:x:y)
Pick a ratio preset to fill it automatically, or enter custom values. Width/height are forced to even numbers; leave x/y empty to center the crop area.
Rotate / Flip
Filter Presets (multiple can be combined)
Color Adjustment
Brightness
0.00
Contrast
1.00
Saturation
1.00
Hue
0°
Output Format & Codecs
Output is always re-encoded locally in your browser. No stream-copy is available for editing operations.
Brightness, contrast, saturation, hue — and chroma key: each slider is a per-pixel math transform (brightness shifts luminance, contrast steepens it, saturation scales color distance from gray, hue rotates the color wheel). Chroma key makes one color range transparent — the green-screen effect. Any pixel change means re-encoding; the container itself is untouched — see Video to MP4 for the container/codec split.
