Yes. Rev Chroma is free with no sign-up and no watermark. The AI runs on your own device, so there are no server costs to pass on.

Can I watch a black and white movie in color without exporting?

Yes. Watch in color colorizes the film live as it plays. On a capable GPU it runs smoothly; on slower devices the colors refresh a few times per second.

How long does it take to colorize a full movie?

It depends on your hardware and settings. Press Estimate time and Rev Chroma benchmarks your device and predicts the total. Smart speed runs the AI only when the picture changes, which cuts time substantially.

What AI model does Rev Chroma use?

DDColor (ICCV 2023), an open-source, Apache-2.0 licensed colorization model, running through ONNX Runtime Web with WebGPU acceleration.

Colorize Black & White Movies with AI

Q: Does it restore old film too?

Yes. It can reduce the brightness flicker common in old film, gently remove grain and noise, and sharpen detail while colorizing.

Watch classic films in color live, restore old footage, and export full movies with the original soundtrack — free, private, and right in your browser.

🎞

Drop your black & white movies here
or tap to choose · MP4 · MOV · M4V · WebM · several at once for a batch

⚙ Settings

🎨 Color look Look Color strength Hue shift Warmth Tint (green ↔ magenta)

🧽 Restoration Edge-aware color Keeps color from bleeding past edges (sharper at HD) Deflicker Denoise / grain Sharpen

⚡ Speed AI scheduling Color stability

🎞 Output Size Layout Frame rate Quality Keep original audio Save straight to disk Required for feature-length films. Batches go to a folder you choose.

Advanced

Use your own DDColor-compatible ONNX model (1×3×512×512 in → 1×2×512×512 ab out)

Shortcuts: L live color · P preview frame.

The most complete free movie colorizer

▶ Watch in color, live

Play any black-and-white film and see it in color instantly — no export needed.

🧠 Smart AI scheduling

Detects motion and scene cuts, running the AI only when the picture changes. Faster exports, steadier color.

🌗 Edge-aware color

A GPU joint-bilateral filter snaps color to the full-resolution edges, so faces and objects don't bleed.

🧽 Old-film restoration

Deflicker evens out the pumping brightness of old film; denoise calms grain; sharpen brings back detail.

🎨 Color looks

Natural, Vivid, Golden Age, Vintage, Pastel or Cool — or dial your own hue, warmth and tint.

📦 Batch everything

Queue a stack of movies and save them all to a folder, or colorize a box of photos and download a ZIP.

⏱ Real time estimates

Benchmarks your own device and tells you how long a movie will take before you start.

🔊 Original audio, bit-perfect

AAC soundtracks are copied without re-encoding — zero quality loss.

🔒 100% private

Everything runs on your device with WebGPU. Your movies and photos are never uploaded.

How to colorize a black and white movie

Open your film. Drop in one or more MP4, MOV, M4V or WebM files. Public-domain classics from archives work great.
Watch it in color. Press Watch in color to see the AI result live while the film plays.
Tune the look. Choose a color look and restoration strength; compare any frame side by side.
Estimate & export. Press Estimate time, then Colorize. You get an MP4 with the original soundtrack.

Frequently asked questions

Is Rev Chroma free?

Yes — no sign-up, no watermark. The AI runs on your device, so there are no server costs.

Are my movies uploaded anywhere?

No. Your files never leave your device. The only download is the AI model (about 135 MB, one time), which your browser then keeps cached.

Can I watch in color without exporting?

Yes. Watch in color colorizes the film live as it plays. On a capable GPU it is smooth; on slower devices colors refresh a few times per second.

How long does a full movie take?

Press Estimate time — Rev Chroma benchmarks your device and predicts the total for your settings. Smart speed runs the AI only when the picture changes, which saves a lot of time on dialogue scenes.

Does it restore old film too?

Yes: deflicker for uneven old-film brightness, denoise for grain, and sharpen for soft scans — all applied on the GPU while colorizing.

What AI model is used?

DDColor (ICCV 2023), Apache-2.0 licensed, running via ONNX Runtime Web.

Which browsers work best?

Desktop Chrome or Edge: fastest, and can stream feature-length films and batches straight to disk. Safari 17+ and Android Chrome work too (in-memory export, best for shorter clips).

Are the colors historically accurate?

No AI can know the true original colors. The model predicts plausible, natural colors for skin, sky, foliage and common objects; clothing and painted objects may differ from the real originals.

Can I colorize any movie?

Colorize films you own the rights to or that are in the public domain. Many pre-1930 US films and countless newsreels and home movies are public domain.