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All toolscrop video API

Crop Video to Any Social Aspect Ratio

Remove unwanted edges without stretching or upscaling the source video. Run the preset directly on this page or call the same agent-ready endpoint from your product.

Run this tool View API recipe

Prefer the shell? Crop a video with FFmpeg, the verified FFmpeg command for this edit.

LIVE TOOL
Run crop video
Drop a video, adjust the defaults if you need to, and download the result here.

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BEFORE / AFTER

See what the tool changes.

A real example: the after side is the unedited output of a KinoPipe job. Run the live form above to generate the same result from your own media.

BeforeLandscape source
16:9 · full frame
AfterFocused crop
Ready
4:5 · right focus

Demo footage: public-domain timelapses (Bureau of Land Management, Oregon · NASA SVS). Processed by the same pipeline the API and MCP tools call.

Useful defaults, typed options.

The tool slug stays stable while your agent supplies named media inputs and a narrow set of documented options.

  • No stretching
  • Four social aspect ratios
  • Five focus anchors
What this preset does
  1. 01Read the source dimensions
  2. 02Calculate the largest matching crop
  3. 03Anchor the crop to the selected focus area
  4. 04Encode an even-sized MP4
Stable endpointPOST /api/v1/tools/crop-video
Live API request
{
  "inputs": [{ "id": "main", "url": "https://example.com/video.mp4" }],
  "options": { "aspect_ratio": "4:5", "focus": "top" }
}
Successful output example
{
  "result": {
    "output": {
      "filename": "output.mp4",
      "contentType": "video/mp4",
      "downloadUrl": "https://cdn.kinopipe.com/…"
    }
  }
}

Know the boundaries before you run.

Supported ratios are 9:16, 1:1, 4:5 and 16:9.
Crop removes pixels; it does not add padding.
The output never exceeds the source dimensions.

About crop video

Crop removes edges while preserving native detail. Resize scales to exact dimensions and can optionally add padding.

Yes. Choose top focus to anchor the crop to the top edge.

No. It calculates a crop window that matches the requested ratio without distorting the source.

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