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Add black bars to video

Letterbox or pillarbox a video into 16:9, 9:16, 1:1, or 4:5 without cutting anything off. It’s free, with no watermark.

Files stay on your device

Drop a video to add black bars

Choose 16:9, 9:16, 1:1, or 4:5. The whole picture is kept, centered on black.

MP4, MOV, MKV, WebM, MPEG-TS, and 3GP videos.

How to add black bars to a video

Choose the shape the video has to fit and the whole picture is centered on black: bars on the sides for a vertical video in 16:9, above and below for a landscape one in 9:16. Nothing is cropped or stretched, and the video never leaves your device.

  1. Step 1

    Choose a video
    Pick the video that needs bars.
  2. Step 2

    Choose the shape
    Pick 16:9, 9:16, 1:1, or 4:5.
  3. Step 3

    Download the video
    Export it with the whole picture on black.

What to expect

Supported inputs
MP4, MOV, MKV, WebM, MPEG-TS (.ts, .mts), and 3GP videos. AVI, WMV, and FLV files can’t be opened yet.
What happens
The video is re-encoded in its source format with black bars filling the new shape. The frame keeps the source’s short side, so a 1080 × 1920 phone video becomes 1920 × 1080 in 16:9.
Limits
A video track is required, and subtitle tracks are left out. Frames are kept within 3840 × 2160, which browser encoders handle.

Your files stay on your device

Your computer does the work, so the file never has to be uploaded, and that’s also why it’s free: there’s no server time for us to pay for. You don’t need an account, and nothing you make gets a watermark.

“Thank you I used this for my university final project.”
Mason, a supporter

Questions

Bars keep the whole picture, so nothing at the edges is lost. Cropping fills the screen but cuts part of the frame away.

Yes. Change aspect ratio fills them with a blurred copy of the video, the look most phone apps use.