Remove Black Bars from Video Online
Automatically detect and crop black bars from your video—without manual framing or stretching. Upload MP4, MOV, AVI, WebM or MKV and download a clean result.
Tip: After remove black bars, open the editor to add text, subtitles, or resize your video.
Before & After: Black Bars Removed
Drag the slider to compare the original video (with black borders) and the cropped version. This is how “remove black bars from video” looks in practice: black border pixels were cropped, the image was not stretched
How to Remove Black Bars from a Video
Remove embedded black borders from a video in a few simple steps. The tool analyzes the video frame, detects uniform border areas and crops them automatically. You do not need to select the crop area manually.
- Upload a video with black borders.
- Click Remove black bars.
- The tool detects and crops the border area automatically.
- Preview and download the result or continue editing it.
Automatic Black Border Detection
Deus.Video removes black bars by cropping the detected border area rather than stretching the visible image. This helps preserve the natural proportions of people, objects and text in the video.
Works best with
- Uniform black borders at the top and bottom
- Black borders on the left and right
- Letterboxed and pillarboxed video
- Black borders that remain in the same position throughout the video
May require manual cropping
- Decorative frames or non-black borders
- Very dark scenes that blend into the border
- Borders that change size during the video
- Black areas that contain text or other meaningful content.
Always preview the result before downloading. If the black area is part of the composition rather than an unused border, use the manual Crop Video tool instead.
What Happens to the Video?
The tool crops border pixels from the outer edges of the frame. It does not stretch the remaining picture, so faces and objects keep their natural proportions.
Because part of the frame is removed, the output dimensions may be smaller than the original dimensions. The exported file may also be re-encoded during processing.
When Should You Remove Black Bars?
Automatic black-bar removal is useful when unused black borders are already embedded in the video file. Common examples include:
- older 4:3 footage exported inside a 16:9 frame;
- widescreen footage with black bars at the top and bottom;
- vertical videos exported with black space on the sides;
- screen recordings with unused border areas;
- videos prepared for presentations or social media.
If black bars appear only in a particular player or on a particular screen, they may not be part of the video file. In that case, changing the player or display settings may be more appropriate than cropping the video.
Popular use cases
- Remove borders before uploading videos to Instagram, TikTok, or YouTube.
- Many screen recordings include black borders that reduce visible content.
- Clean up videos before adding them to presentations or editing software.
- Fix videos recorded with incorrect aspect ratios.
Supported Video Formats
The online tool supports common video formats including MP4, MOV, AVI, WebM and MKV. No software installation is required: upload the file through your browser, process it online and download the result when it is ready.
Need to Edit Your Video?
After remove black bars, you can continue editing your video: add subtitles, trim video, add text overlays, resize for social media
Learn More About Black Bars in Video
Frequently Asked Questions
Why does my video have black bars?
Black bars appear when the video aspect ratio does not match the display format.
Can I remove black bars automatically?
Yes. This tool detects and crops black borders automatically.
Will removing black bars reduce video quality?
The visible image is not stretched. The tool crops the detected border area while preserving the proportions of the remaining picture. Exporting may involve re-encoding the video.
What video formats are supported?
MP4, MOV, AVI, WebM and other common formats.
Can I remove black bars from vertical videos?
Yes. The tool works with both horizontal and vertical videos.