Change Video Aspect Ratio
Fill, Crop or Blur Fill
Turn a widescreen clip into a vertical or square one, or the other way round: fill the new edges with AI, crop to the part you want, or blur fill. From 2 credits: 8 credits per 10 s for Fill with AI, 2 credits flat per clip for Crop or Blur fill.
12,000+ accounts created on Inflyu so far
Three Ways to Fit a New Shape
Pick the shape, then pick how the new frame is filled.
Fill with AI
The area the new shape needs is drawn to match the scene, so the whole picture stays in view. Made at 540p.
Crop
Drag where the new frame sits on your clip and keep that part. Nothing is generated.
Blur Fill
Your whole clip, sharp and uncut, over a blurred copy of itself. Nothing is generated.
9 Sizes or Your Own
9:16, 4:5, 1:1, 3:4, 4:3, 2:3, 3:2, 16:9, 21:9, or any custom width and height. Vertical for Reels, Shorts and TikTok, square for feeds, widescreen for YouTube.
Up to 60 Seconds
Change the shape of a full short clip in one run.
You See the Price First
From 2 credits: 8 credits per 10 s for Fill with AI, 2 credits flat per clip for Crop or Blur fill. You see the cost before you run, and a failed run is refunded.
Three Steps to a New Aspect Ratio
Upload, choose a shape and a fill, download.
Upload a Video
Videos up to 60 s. Trim a longer clip first.
Choose the Shape and the Fill
Pick one of 9:16, 4:5, 1:1, 3:4, 4:3, 2:3, 3:2, 16:9, 21:9 or your own size, then Fill with AI, Crop or Blur fill.
Generate and Download
Get the new video and post it where the shape fits.
Change Video Aspect Ratio FAQ
How do I change the aspect ratio of a video?+
Upload the clip, pick a size (9:16, 4:5, 1:1, 3:4, 4:3, 2:3, 3:2, 16:9, 21:9) or type your own, choose how the new frame is filled, and download the result. Videos up to 60 s. Trim a longer clip first.
Fill with AI, Crop or Blur fill: which should I pick?+
Fill with AI keeps your whole picture and draws new scene around it. Crop fills the new frame with the part of your picture you choose and cuts the rest. Blur fill keeps the whole picture, sharp and uncut, over a blurred copy of itself, with nothing generated.
Can I choose which part of the video stays in a crop?+
Yes. You drag where the new frame sits on your clip, over a preview of its first frame. Crop and Blur fill use that position too. It is one position for the whole clip: the tool does not follow a subject.
Can I set my own width and height?+
Yes: any width and height (240 to 2160 pixels per side, even numbers), as well as 9:16, 4:5, 1:1, 3:4, 4:3, 2:3, 3:2, 16:9, 21:9.
How much does it cost?+
From 2 credits: 8 credits per 10 s for Fill with AI, 2 credits flat per clip for Crop or Blur fill. With Fill with AI a started block of 10 seconds is charged in full; Crop and Blur fill are one flat price whatever the length. The price is shown before you run.
Will the new area look perfect with Fill with AI?+
Not always. The extra area is drawn by a model, so busy scenes or fast motion can show flaws, and Fill with AI is made at 540p. Check the result before you post it, or use Crop or Blur fill, which draw nothing.
Do I need an account?+
Yes. Create a free account and verify your email, then run the tool with credits. There is no anonymous generation.
Do I need a subscription?+
No. You can pay as you go: credit packs are one-time purchases and their credits never expire. If you would rather have a steady supply, the monthly Starter ($8.99), Creator ($19), Pro ($49) and Brand ($99) plans refill your credits each month, and you can cancel anytime. Unused monthly credits do not roll over.