Can AI color grade a video automatically?

Yes. Describe the look (“warmer and a bit moodier”) and Valmera’s AI agent picks a preset, tunes controls such as temperature, tint and shadows, and checks frames of the preview before replying. You refine in plain English and export when it looks right.

Can I color grade a video online for free?

Yes, with the preview on this page. It grades a clip in your browser with six looks and four sliders and exports up to 2 minutes, at up to 1920 pixels on the long edge, with no upload, account or watermark. Grading in Valmera works on your full-resolution file: creating an account and uploading are free, and editing requires a subscription.

How do I make a video look cinematic?

Ask for it: “make this cinematic.” Valmera applies its cinematic preset (deeper contrast, cooler shadows), and you refine from there: “a touch warmer,” “lift the blacks.” The cinematic look also sets elegant captions, 1-second fades and dip-to-black transitions. If it still looks like phone footage, ask for less saturation, not more.

What is the difference between color correction and color grading?

Correction makes footage accurate: neutral white balance, correct exposure, shots that match. Grading then gives it a deliberate look such as warm, vintage or cinematic. Correct first, because a look laid over a color cast keeps the cast.

Can I use my own LUT in Valmera?

Not directly. Valmera doesn’t import .cube LUTs or convert log footage. If you shoot log, apply your camera maker’s conversion LUT in your camera app or editor before uploading, then describe the look you want on top. If a specific creative LUT is the look, bake it in before upload too.

Will color grading change my captions or text?

No. Valmera grades the footage before captions, titles and graphics are burned in, so text keeps its exact colors whatever the grade.

Can I grade one section differently, or match two cameras?

The grade applies to the whole video, with no per-shot matching between cameras. For one section, such as a warmer flashback, the agent can put texture effects or a custom filter on that time range. For multi-camera matching, use a dedicated grading app such as DaVinci Resolve.

AI Color Grading for Video

AI color grading means describing the look you want (“warmer, lift the shadows, a little less saturated”) instead of dragging color wheels. Upload your footage to Valmera and say it in plain English: the AI agent picks a grade preset, fine-tunes exposure, contrast, saturation, temperature, tint, shadows and highlights on top as needed, then renders a preview and checks the frames before it replies.

Want to try a look first? The free preview below grades a short clip in your browser. Nothing is uploaded, and you can download the result.

FREE · LOCAL · NO UPLOAD · NO WATERMARK

Color Grade and Export Your Video Free

Choose a local clip, try six looks, adjust four controls, and download the result. Clips up to 2 minutes export in real time at up to 1080p; your file stays in this browser.

Free Preview or Full Grade?

Compare	Free preview (this page)	Grading in Valmera
How you grade	Pick a look, drag four sliders	Describe the look; the agent sets the preset and custom controls
Controls	6 looks; exposure, contrast, saturation, temperature	6 presets, seven custom controls, one-request looks, texture effects, enhancement, custom filters
Where it runs	Your browser; nothing is uploaded	Valmera’s renderer, on your full-resolution upload
Length	Export up to 2 minutes	Up to 3 hours and 14 GB per file
Output	WebM or MP4 (your browser decides), up to 1920 px on the long edge	Full-resolution H.264 MP4 rendered from your original, ending with a brief Valmera end card
Checking	Toggle Original and Preview	The agent inspects frames of the graded preview before replying
Access	Free, no account, no watermark	Account and upload are free; editing requires a subscription

The preview’s looks are browser filters, so use them to pick a direction, not as an exact match for Valmera’s render. Export records in real time: keep the tab in front, and prefer Chrome or Edge. The tool tells you whether your browser kept the audio.

Describe the Look. Get the Grade.

Upload your footage, say how it should feel, and review the graded preview. Creating an account and uploading are free; editing requires a subscription.

Create an account →

See pricing →

How to Color Grade a Video with AI in Valmera

1
Upload your footage
MP4, MOV, M4V, MKV or WebM, up to 14 GB and 3 hours. Valmera indexes it once: transcript, shot changes, frames and a fast proxy for previews.
2
Describe the look
“Warmer, lift the shadows,” “cinematic but less saturated,” or “fix the green cast.” Name the mood if you don’t know the settings.
3
Let the agent grade and check
It sets the preset and custom controls, renders a preview and looks at frames from it before replying.
4
Refine in plain English
“A touch cooler,” “less contrast,” “drop the grain.” Every change is a new version, so earlier grades stay one message away.
5
Export
Click Export for a full-resolution H.264 MP4 rendered from your original file.

PROMPTS TO PASTE

Give it a cinematic grade, a little warmer, and lift the shadows slightly.

The footage looks green and underexposed. Fix the tint and brightness, nothing stylized.

Black and white with strong contrast and subtle film grain.

Vintage preset with light film grain, and lift the blacks a little.

Describe the Look, Get the Settings

You never need the parameter names. Here is what common requests turn into; the numbers are typical starting points the agent tunes after looking at your frames.

You say	What Valmera sets
“Make it cinematic.”	The cinematic preset: deeper contrast, cooler shadows. “Cinematic, but warmer” adds temperature (about +0.2) on top.
“Warmer, and lift the shadows.”	Temperature up and shadows up. The dark areas open while middle grey stays where it was.
“The office light makes me look green.”	Tint toward magenta. Temperature too, if the face also reads blue or orange.
“It’s too dark.”	Exposure up. If only the dark areas need help, shadows up instead, so a bright window doesn’t blow out.
“The sky is blown out.”	Highlights down to pull bright areas back. Detail the camera clipped to pure white can’t come back.
“Black and white, high contrast.”	The bw preset plus contrast up (for example +0.15).
“It looks soft and grainy.”	Not a grade: picture enhancement reduces video noise, then sharpens.

Fix before you style: ask for a neutral, well-exposed picture first and the look second. The color grading glossary entry explains why.

What the Grade Controls

A grade is one preset plus up to seven custom controls on top, so “cinematic, but warmer” is a preset and one adjustment.

Control	Range	What it does
Preset	vibrant, warm, cool, bw, vintage, cinematic	The starting look; “none” clears it.
Exposure	−1 to +1	Brightens or darkens everything.
Contrast	Small step (+0.08) or 0.5× to 1.6×	Deepens or flattens the tones.
Saturation	Small step or up to 2×	Color intensity; monochrome uses bw.
Temperature	−1 (cool) to +1 (warm)	Blue to amber balance.
Tint	−1 (green) to +1 (magenta)	Fixes the green cast of LED and fluorescent light.
Shadows	−1 to +1	Positive lifts the darks; middle grey stays put.
Highlights	−1 to +1	Negative pulls bright areas back.

Looks, Texture and Clarity

One-request looks

A look sets captions, grade, transitions, fades and texture together: hype (big all-caps captions, vibrant grade, zoom-punch cuts, closing fade), clean (clean white captions, no grade, gentle fades), cinematic (elegant captions, cinematic grade with slight warmth, 1-second fades, dip to black), luxury (luxe captions, warm grade, long fades) and meme (impact captions, flash cuts, grain). Looks never touch your cuts, music or sound effects, and every part stays adjustable.

Texture effects

Film grain, vignette, glow, halation, chromatic aberration, dream blur, VHS, flash and shake, from subtle to strong, over the whole video or one moment. Windowed effects follow their footage through later cuts. One or two read as a look; five read as a broken TV.

Clarity and custom looks

“Make it sharper” is a clarity fix, not a grade: Valmera reduces picture noise and sharpens (there is no audio denoise). For a look no preset makes, such as a CRT glow, the agent writes its own ffmpeg filter chain, tests it on your footage, and applies it to the whole video or a time range.

Limits

Valmera applies one grade to the whole video. There is no per-shot matching between cameras and no secondary grading: no qualifiers, power windows or masks to isolate a face or a sky. It doesn’t import .cube LUTs or convert log footage, and there are no scopes or color wheels; you direct by description and judge the preview. Captions and graphics are never graded, and enhancement can’t add resolution a small source never had. When one section needs different treatment, a custom filter on that time range is the workaround.

Part of the Finishing Pass

Color is usually the last pass, alongside transitions at the scene changes. For a consistent channel look, paste the same grade description into each project (there is no saved brand kit yet), as in the YouTuber workflow. For property tours, keep the grade truthful: fix white balance and exposure, and skip looks that change how finishes read. Parameters are in the effects docs. Creating an account and uploading are free. Editing requires a subscription — see plans.

Using Claude, ChatGPT or Cursor? The same set_color_grade, set_grade_custom and apply_look tools are available through Valmera's MCP server.

SOURCES · CHECKED AUGUST 24, 2026

MDN: canvas captureStream(): how the free export records.
MDN: MediaRecorder.isTypeSupported(): WebM or MP4.
W3C MediaStream Recording: the specification.
Adobe: color-correction workflow: correction before looks.
Blackmagic Design: DaVinci Resolve training: scopes and secondaries.

Frequently Asked Questions

Made with Valmera: real exports

Grade Your Video by Describing It

Upload, describe the look, review the preview, export a full-resolution MP4. Creating an account and uploading are free; editing requires a subscription.