> For the complete documentation index, see [llms.txt](https://docs.chatvideopro.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chatvideopro.com/features/studio/reframe.md). # Reframe {% hint style="info" %} **Reframe adds to your frame, it doesn't crop it.** The original clip is kept intact — the AI generates new content along the expanded edges to fill the new aspect ratio. The subject is centered automatically; no manual placement required. {% endhint %} **When to Use Reframe** Reframe is the right tool any time your footage needs to live in a different aspect ratio than it was shot in — and you want the new frame to look complete, not cropped. * **Repurpose landscape content for vertical social** — convert 16:9 footage to 9:16 for TikTok, Instagram Reels, and YouTube Shorts without losing the subject * **Adapt footage to platform specs** — quickly reframe a single master clip for every delivery format your project requires * **Explore creative framing without reshooting** — try a square, ultra-wide, or portrait ratio to see how the shot holds in a new aspect * **Reframe generated Studio content on the spot** — use the quick action button on any Studio result card to immediately repurpose what you just created ***
**Starting a Reframe** There are three entry points — all lead to the same workflow. * **From Studio** — navigate to Studio → Post-Production → Reframe, then load a clip * **From a chat clip** — click the Transform icon on any video clip thumbnail and choose **Reframe Video** * **From a Studio result** — tap the quick Reframe action button directly on any Studio result preview card *** **Getting Started** **Step 1: Load Your Clip** Pick the video clip you want to reframe. Three sources are available: * **Upload** — select a file from your computer (MP4, MOV, or other common formats; up to 100 MB) * **Recents** — pick from any clip recently used or generated in Chat Video Pro * **Import from Premiere** — pull a clip directly from your active Premiere Pro timeline The clip loader is skipped when entering from the chat Transform menu or a Studio result button — your clip is already pre-loaded. ***
**Step 2: Choose a Target Aspect Ratio** Select the ratio you want the output to be. Seven options are available:
RatioNameCommon Use
16:9WideYouTube, desktop, broadcast
9:16VerticalTikTok, Reels, YouTube Shorts
1:1SquareInstagram feed, social ads
4:3ClassicStandard TV, Zoom
3:4PortraitUpright portrait format
21:9CinemaUltra-wide cinematic
9:21TallExtra-tall vertical
Your current clip's aspect ratio is automatically excluded from the list — converting a clip to the ratio it is already in would have no effect. *** **Step 3: Choose Quality** * **Draft** — faster processing, supports clips up to **30 seconds**. Use Draft to test your ratio and fill hint before committing to a full render. * **Final** — best quality output, supports clips up to **10 seconds**. Use Final for delivery. {% hint style="info" %} Start with Draft to quickly iterate on ratio choice and fill hint, then switch to Final for your delivery render. {% endhint %} *** **Step 4: Add an Optional Fill Hint** The fill hint is a short text description that guides what the AI generates in the newly added areas. Leave it blank for fully automatic fill, or type a brief phrase when you want to steer the output. **Examples:** * `forest background, seamless` * `brick wall, warm light` * `dark studio, soft gradient` * `extend concrete floor` {% hint style="info" %} Keep fill hints short and descriptive — a few words or one short phrase. Describe what the new area should look like, not what the subject should do. Subject positioning is handled automatically. {% endhint %} ***
**Step 5: Generate and Use the Result** Click **Generate**. A progress indicator shows while Reframe processes the clip. When the preview appears: * Play it back to review the new framing and fill * Click **Insert to Timeline** to place it on the Premiere Pro timeline * Click **Save to Library** to store it for later use If the result isn't quite right, adjust the fill hint or quality tier and regenerate. *** **How Reframe Works** **Subject auto-centering** — The AI detects the primary subject and places it at the visual center of the new frame. There are no manual anchor points or keyframes to set. **AI fill** — Reframe generates new content along the expanded edges to match the look and content of the scene. The original clip remains intact; the AI adds to it rather than cropping. **Input limits** — Clips must be at least 1 second and no larger than 100 MB. Duration limits depend on the quality tier: up to 30 seconds for Draft, and up to 10 seconds for Final. *** **Pro Tips** **Stable shots work best** Locked-off shots, talking heads, product shots, and slow b-roll give the AI a consistent background to extend. Fast camera movement and quick pans make it much harder to generate a seamless fill — use stable, steady clips whenever possible. **Draft first, Final for delivery** Draft quality is fast enough to run several iterations quickly. Test different fill hints and confirm the framing looks right before running a Final render. The extra processing time for Final is worth spending only once you are satisfied with the Draft result. **Use the fill hint for complex backgrounds** When the new areas are large or the background is detailed, a short fill hint almost always produces better results than leaving the field blank. Describe the environment simply: "outdoor park, sunlight" or "dark office, city lights through window." **Trim long clips before using Final quality** Final quality supports clips up to 10 seconds. If your source clip is longer, trim it to the segment you need in Premiere Pro before importing — you get a better result and a faster render. **Pair Reframe with other Studio tools** Generate a clip in Motion Director or AI B-Roll, then immediately Reframe it for a different platform using the quick action button on the result card. The Studio result entry point is the fastest way to repurpose generated content the moment it lands. *** **Troubleshooting** **The fill edges look inconsistent or shift between frames**\ The source clip likely has camera movement. Reframe works best on locked-off shots. Try a more stable segment of the clip, or use a shorter section where the camera is still. **The subject is off-center in the output**\ The source clip may have an extreme or off-center composition. Trim the source to a tighter crop in Premiere Pro that better centers the subject before sending it to Reframe. **The fill area looks wrong or doesn't match the scene**\ Add or adjust the fill hint to describe the background more specifically. Even a brief description like "extend the sky, blue, bright" gives the AI useful context when the source edges are complex. **The Generate button is disabled**\ Reframe requires an API key configured in Settings. Go to Settings → API Keys, confirm your key is entered, and check that it is funded. **Draft quality looks noticeably rough**\ Draft is designed for quick iteration, not delivery. Once the ratio and fill hint look right in Draft, run a Final quality render for the version you plan to use. **My clip is over 10 seconds and I want Final quality**\ Final quality supports clips up to 10 seconds. Trim the clip in Premiere Pro to a 10-second or shorter segment, then reimport and try again. Use Draft quality if you need to reframe the full longer clip. **Generation failed or timed out**\ Try again — generation can occasionally fail under high load. If failures continue, check your API key status in Settings and confirm the key is funded. *** **Next:** Learn about AI Color Match — instantly match the color grade of any clip to a reference frame.