Video Color Filter
Free online video color filter. Adjust brightness, contrast, saturation, hue and gamma with live preview and export a real MP4 (H.264). Runs 100% in your browser, no upload.
How does the color filter work?
The live preview applies CSS filters to the video element, while the export re-encodes the file with FFmpeg's eq filter so the corrections are baked into the actual pixels of the saved MP4. Everything runs locally through WebAssembly.
Is my video uploaded to a server?
No. The file never leaves your device — decoding, filtering and encoding all happen inside the browser tab. After the one-time engine download the tool even works offline.
Why is there a one-time download of about 30 MB?
Exporting uses FFmpeg compiled to WebAssembly. That engine is fetched once, stays in the browser cache and is reused for every future export, so it is a single cost.
What do the sliders actually change?
Brightness shifts every luma value up or down (-100 to 100), contrast multiplies the distance from mid grey (0-200%), saturation scales color intensity (0-200%), hue rotates the colors (-180 to 180 degrees) and gamma reshapes the midtones (0.1-10).
Why can the preview look slightly different from the export?
CSS filters are an approximation of FFmpeg's math and gamma is only approximated in the live preview. The exported MP4 always follows the exact FFmpeg eq curve defined by the sliders.
Which formats can I open and save?
You can open anything your browser can play, such as MP4, WebM or MOV. The export is always an MP4 with H.264 video (CRF 23) and AAC audio for maximum device compatibility.
How large a video can I process?
Files up to 200 MB are accepted. Speed depends on clip length and resolution — short clips finish in well under a minute, while long videos need patience because the engine runs on a single browser thread.
Is the sound kept?
Yes. The audio track is re-encoded to AAC so it stays in sync with the filtered picture. Videos without sound simply stay silent.
How to Use Video Color Filter
This video color filter adjusts brightness, contrast, saturation, hue and gamma with a live preview on your actual video, then renders a real MP4 (H.264 + AAC) with FFmpeg compiled to WebAssembly. The clip never leaves your device — no upload, no watermark.
- Click the upload area (or drag a video in) and pick a clip up to 200 MB.
- Drag the Brightness, Contrast, Saturation, Hue and Gamma sliders — the preview updates instantly.
- Use Reset to return all sliders to their neutral values.
- Press Export MP4 and wait while the progress bar fills; the first export downloads the engine once (~30 MB).
- Compare original and exported sizes, then hit Download to save <name>_filtered.mp4.
Changed the sliders after exporting? The "settings changed" notice appears — export again to bake the new look into the file. Gamma is only approximated in the preview but applied exactly in the export.
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