Video outpainting: how to uncrop a video with AI

Updated 2026-11-11 · AI Video Expand

Video outpainting extends a video beyond its original frame: an AI video model keeps every frame of the clip and generates new picture around it, so the video can become wider, taller or square without cropping. It is also called uncropping, generative expand for video, or AI reframing. To outpaint a clip online, upload it to AI Video Expand (up to 60 seconds), pick the new shape and pay ⁠$4.99⁠ for up to 10 seconds at 720p; no prompt is needed.

**The original clip**One run at 720p, shown as it came out: the wall, curtain and dark cabinet on both sides are new.

How it works

Video outpainting is image outpainting (Photoshop's Generative Expand, DALL-E's uncrop) done on every frame of a video, so the new edges move with the camera and stay the same from frame to frame. Editors used to fill the gap with a blurred, zoomed copy of the clip or plain bars; AI video models can now draw the room, sky or street that the camera didn't catch.

Here the clip goes to LTX 2.3 from Lightricks (run by fal.ai), which reframes the video: your clip stays whole and centred, and the model draws the missing edges on every frame so they move with the camera.

Image outpainting vs. video outpainting

Image outpainting (Photoshop's Generative Expand, DALL-E's uncrop) fills around one still picture.
Running it frame by frame on a video makes the new edges flicker, because every frame is invented on its own.
Video outpainting models see the whole clip at once, so the added picture stays the same from frame to frame and follows the camera.

Outpaint a clip step by step

Upload the clip on the home page: MP4 or MOV, up to 5 minutes and 480 MB, no sign-in needed (a clip over a minute: 720p, to 16:9, 9:16 or 1:1).
Pick the shape you need (16:9, 9:16, 1:1, 4:5, 5:4) and 720p or 1080p. The price goes by the clip's length and shows before you pay.
Pay for just that clip: 720p: ⁠$4.99⁠ for up to 10 seconds, ⁠$9.99⁠ up to 20, ⁠$29.99⁠ for a full minute; 1080p costs twice that. One payment per clip, no subscription; or credit packs from ⁠$12.99⁠.
Wait about 1 to 3 minutes. The expanded MP4 shows up in My videos, with your clip's own sound and no watermark.
Download it (on iPhone, Save to Photos) and upload it where you need it.

Prompt or no prompt?

Some tools let you describe what to add at the edges. This one doesn't take a prompt: the model continues the scene from what is already in the clip. That works well for rooms, streets, sky and nature; if you need something specific in the new area, use a tool with a prompt or edit it in afterwards.

Limits

The AI invents what was outside the frame, so it can't show what really was there: a person cut off at the edge gets a made-up rest of their body, and signs or faces that only appear in the new area are made up too. Fast camera moves and busy edges can shimmer. Up to 5 minutes per clip; trim a longer one to the part you need first.