Crop Video
Upload a video and crop it to a specific rectangular region. Enter the X and Y offset (top-left corner of the crop area) and the desired width and height in pixels. The tool uses ffmpeg's crop filter to cut out exactly the region you specify, keeping the audio track intact.
This is useful for removing black bars, focusing on a specific part of a frame, or preparing a video for a platform that requires a specific aspect ratio. If you're not sure of the exact pixel values, open the video in any player that shows dimensions and note the coordinates.
Everything runs in your browser using ffmpeg.wasm — your video is never uploaded to a server.
By The Paper Room Editorial Team — Video Tools
Frequently asked questions
How do I know what X, Y, width, and height to use?▼
Open the video in a media player or image editor to see the full resolution. X and Y define the top-left corner of the crop region (0,0 is the top-left of the frame). Width and height define the size of the rectangle to keep. For example, to crop a 1920x1080 video to its center 1280x720, use X=320, Y=180, W=1280, H=720.
What happens if my crop dimensions are larger than the video?▼
ffmpeg will return an error if the crop region extends beyond the video frame. Make sure X + Width does not exceed the video width, and Y + Height does not exceed the video height.
Does cropping re-encode the video?▼
Yes — the video track is re-encoded because the pixel dimensions change. The audio track is copied without re-encoding. Processing time depends on the video length and resolution.