Video Crop keeps only part of the picture: cut away black bars above and below, turn a landscape video into a vertical one for short-video platforms, or take out subtitles burned into the bottom or some distraction in a corner. It is the “Crop picture” tab of the audio/video workbench and, unlike Trim and Cut Video Clips, it cuts space instead of time.

The crop box is drawn straight on a video frame: choose a ratio first (free / 16:9 / 9:16 / 1:1 / 4:3) and the tool offers the largest centred box for that ratio, then drag it to move and drag a corner to resize. Because H.264's yuv420p pixel format requires even width and height, the output size is rounded down to even numbers (a box of 1081×1079 becomes 1080×1078), and the panel shows “Output size W×H, origin (x, y)” live.

1. 01Add a video and select it— switch to “Crop picture”; the panel needs the video's dimensions first and shows “Reading video dimensions” until it has them.
2. 02Choose a ratio— click “Free”, “16:9”, “9:16”, “1:1” or “4:3” and the box resets to the largest centred rectangle of that ratio; switching ratio discards manual adjustments.
3. 03Adjust the box— drag the box on the preview frame to move it and drag a corner to resize; drag the progress bar below to check the crop on another frame. With the ratio locked, resizing keeps the proportions.
4. 04Crop and download— after checking the “Output size” reading, click “Crop picture” and download <original-name>_cropped.mp4 (MOV / MKV / M4V keep their extension, other containers come out as .mkv).

One rectangle

— a single region only, the same box for the whole video; it cannot move over time (no tracking crop)

Crop only, no scale

— the output resolution is the size of the box and is never enlarged back to the source; a small box gives a small picture

Re-encoding

— H.264 CRF 20 preset fast, with a runtime proportional to the video's length; AV1 sources cannot be decoded; the audio track is copied (rare codecs are converted to AAC 128 kbps)

Even dimensions

— width, height and origin all round down to even numbers, with a 2×2 minimum, so single-pixel-accurate crops are impossible

What it does not do

— it does not add black bars to make a landscape video vertical (use the “Vertical 9:16” preset in Video Format Converter), does not rotate (use Rotate & Flip Video) and does not cut time ranges (use Trim and Cut Video Clips)

Cropping runs locally in the browser through ffmpeg.wasm and the video is not uploaded; the first use downloads about 31 MB of engine files from a CDN (the site's asset domain or jsDelivr) and that request contains no video content.