Crop Video
Runs in your browser — your files are never uploaded.
Cut a rectangle out of a video — to remove black bars, reframe for a vertical feed, or drop something out of shot. Set the size of the area you want to keep and where its top-left corner sits. Dimensions are snapped to even numbers automatically, because H.264 cannot encode an odd width or height and the export would otherwise fail with an error about divisibility.
How to use Crop Video
- 1
Drop your video onto the box, or click to choose one.
- 2
Set the width and height of the area to keep.
- 3
Set the X and Y offset of its top-left corner — 0,0 is the top-left of the frame.
- 4
Click “Convert” to save the cropped MP4.
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Frequently asked questions
How do I crop to a vertical 9:16 for Reels or Shorts?+
From a 1920×1080 source, keep 608×1080 and set X to 656 to take the centre strip. The arithmetic is (1920 − 608) ÷ 2 for a centred crop. Height stays at the full 1080 since the source is already the right height.
Why did my dimensions change slightly?+
They were rounded down to even numbers. H.264 with standard chroma subsampling cannot represent an odd width or height, and ffmpeg refuses the encode outright rather than adjusting. Snapping is the difference between a working export and an error.
What happens if the crop area falls outside the frame?+
The export fails, and the tool says so. There is no way to invent pixels that were never recorded — check the source dimensions in your player and make sure X plus width fits inside them.
Does cropping reduce quality?+
Cropping itself does not, but the video has to be re-encoded to be written out, so there is one generation of loss. It is not visible at the quality used here.