Trim the frame to square, vertical, or widescreen formats before using AI to make it loop.
Cut a 9:16 frame out of landscape footage so the subject fills a phone screen instead of sitting in a band between black bars.
1:1 and 4:5 frames take up more of a feed than widescreen video and suit product shots and talking heads.
Crop to 16:9 or a wide freeform strip so the important part stays visible behind headings. See how to make a looping video background for a website.
Cut away letterbox bars, a stray microphone or an untidy edge of the scene without changing the clip's length.
Pick the ratio button that matches where the video will be shown. The pixel sizes below are the commonly recommended upload sizes; platforms change their guidance from time to time, so check before an important launch.
Cropping keeps the source resolution. A 1920 × 1080 clip cropped to 9:16 gives a frame of about 608 × 1080 pixels. If a platform asks for 1080 × 1920, resize the video afterwards; enlarging it does not add detail.
| Where the video will play | Ratio button | Common upload size |
|---|---|---|
| TikTok, Instagram Reels, YouTube Shorts, Stories | 9:16 | 1080 × 1920 |
| Instagram and Facebook feed, portrait | 4:5 | 1080 × 1350 |
| Square posts, product tiles | 1:1 | 1080 × 1080 |
| YouTube, websites, presentations | 16:9 | 1920 × 1080 |
| Older screens and 4:3 slides | 4:3 | 1440 × 1080 |
| Photo-style frames | 3:2 or 2:3 | Match the layout |
| Banners and custom strips | Freeform | Match the layout |
Freeform lets you drag any rectangle. A ratio button starts a centered selection with that shape and keeps the shape while you drag the corners.
With a fixed ratio, Scale sets the selection from 10% to 100% of the largest crop that fits in the frame, and recenters it.
Type exact pixel sizes. Values stay inside the source frame and are rounded to even numbers for MP4 encoding.
Position the selection in pixels from the top-left corner of the source, or drag it on the preview.
A crop is often the first step of a longer edit. Download the MP4, then make it loop seamlessly with AI on the LoopVideo homepage, convert it to a GIF, or resize it to an exact upload width. A tighter frame on steady motion, such as water or a turning product, usually gives a cleaner loop and a smaller GIF.
Cropping removes the outer parts of the picture. Resizing changes the dimensions of the whole picture while preserving its proportions. This crop tool does not shorten the clip or choose start/end times; trim the duration in another editor first.
Choose Freeform, 1:1, 16:9, 9:16, 5:4, 4:5, 4:3, 3:4, 3:2 or 2:3. The selection stays inside the source frame. Exported width and height are rounded to even pixels for MP4 encoding.
The maximum input is 300MB and 5 minutes. Above 100MB or 60 seconds, a performance warning appears. Processing depends on device memory and browser support for the source codec; a supported file extension alone does not guarantee decoding. Shorter, lower-resolution clips are easier to process.
Cropping is free and requires no login or credits. Video processing stays in your browser. AI seamless generation is a separate workflow that requires sign-in and sends boundary frames to the service; download your crop before opening that workflow.
No. One crop rectangle is applied to the whole clip; there is no tracking or keyframing. Choose a frame that covers the subject's full path of movement, or use footage where the subject stays in place.
The remaining pixels keep their original size, so the crop simply has fewer pixels than the source. The clip is also re-encoded as an H.264 MP4, which can change quality slightly. Avoid cropping a small area and then enlarging it a lot.
Select 9:16, drag the selection over the subject and crop. A 1920 × 1080 clip gives a frame of about 608 × 1080 pixels. If a platform asks for 1080 × 1920, resize the downloaded crop afterwards; enlarging it does not add detail.
