Video Cropper
Crop a video to a custom region — width, height and position — right in your browser. Free, private, no signup or upload.
About the Video Cropper
This free video cropper trims the frame of a video down to the region you want — set the crop width, height and the top-left position, and everything outside is removed. Use it to cut off black bars, reframe for a square or vertical social post, or zoom in on part of the picture.
Cropping runs entirely in your browser through FFmpeg WebAssembly, so your video is never uploaded. The engine (about 30 MB) downloads from a CDN on first use and is cached, so the first crop is slower than later ones. The result is re-encoded as an H.264 MP4 with a web-friendly yuv420p pixel format so it plays everywhere.
The crop values are in pixels and must fit inside the original frame. If you are unsure of your video's dimensions, start with a smaller crop from the top-left (0, 0) and adjust. Videos up to 100 MB are supported.
How to Use the Video Cropper
- 1Choose a video file, up to 100 MB.
- 2Enter the crop width and height in pixels.
- 3Enter the X and Y position of the top-left corner of the crop.
- 4Click Crop Video, preview the result and download it.
Frequently Asked Questions
Is my file uploaded to a server?
No. All processing runs in your browser using FFmpeg compiled to WebAssembly. Your file never leaves your device — only the converter engine is downloaded, once.
Why is the first run slow?
The first time you use any converter here, the browser downloads the FFmpeg core (about 30 MB) from a CDN and compiles it. It is then cached for the session, so later runs are much faster.
How do the crop values work?
Width and height set the size of the region to keep; X and Y set its top-left corner in pixels, measured from the top-left of the video. The region must fit inside the original frame.
Can I use this to remove black bars?
Yes. Set the crop width and height to the visible picture area and position it to exclude the bars. A little trial and error gets a clean result.
Is there a file size limit?
Yes, 100 MB per file. Because everything runs in your browser's memory, very large files can be slow or run out of memory. Trim long clips first if you hit the limit.