Video

Crop Video

Cut a rectangle out of a video — set the size and where it starts.

Video file

Choose a file to convert. It's processed locally — never uploaded. Tip: add several files to convert them all at once.

Settings

Output

Result appears here after you select

{ } How to use

  1. Choose the video.
  2. Set the width and height you want to keep, and how far in from the top-left corner the crop starts.
  3. Select Process, then download the result.

{ } How it works

Crop Video works on the file you upload. Adjust the options, then select Process ▸ and it runs entirely in your browser — nothing is uploaded to a server — then shows the result in the Output panel.

Inputs

  • Video file — upload a file (video/*); it is read locally in your browser
  • Width (px) — a value (default: "640")
  • Height (px) — a value (default: "480")
  • Left offset (px) — a value (default: "0")
  • Top offset (px) — a value (default: "0")

Output

A downloadable MP4 file — use the Download button in the Output panel.

{ } Common uses

  • Remove black bars from a letterboxed video.
  • Cut a square or vertical frame out of a landscape clip for social media.
  • Crop out something you do not want in shot.

{ } Limitations

  • The crop cannot be larger than the source; ffmpeg fails rather than padding the edges.
  • Width and height are rounded down to even numbers, because H.264 cannot encode odd dimensions.

{ } FAQ

Is my data uploaded to a server?

No. Everything runs locally in your browser — your files never leave your device.

Can I process more than one file at once?

Yes — add several files and they’re all processed and downloaded together as a ZIP.

Is this tool free?

Yes — it’s completely free and needs no sign-up.

How do I work out the offsets?

They are measured in pixels from the top-left corner of the original. To centre a crop, subtract the crop width from the source width and halve it — for a 640-wide crop out of a 1920-wide video that is an offset of 640. Video Metadata Viewer will tell you the source dimensions.

Why did my crop fail?

Because the rectangle fell outside the picture. The width plus the left offset, and the height plus the top offset, both have to stay within the source dimensions — the encoder refuses rather than padding the missing edges with black.