Online Tool Store
Video Black Bar Remover
Detect black letterbox or pillarbox bars on a video's edges and crop them out automatically, so the exported clip fills the frame cleanly. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Example
Video Black Bar Remover
- Source resolution
- 1920×1080 (letterboxed)
- Detected bars
- Top/bottom 140px
Example shown — replace it with your own video.
Result
How it works
- Upload a video that has letterboxing or pillarboxing.
- The tool detects the black bar thickness on each edge.
- Preview and export the cropped, bar-free version.
The method
Edge rows and columns are sampled across several frames and checked for near-black pixel values; a bar is flagged once a consistent margin is detected across the sampled frames.
FAQ
What causes black bars in the first place?
Black bars (letterboxing or pillarboxing) appear when a video's aspect ratio doesn't match the frame it's placed in, so the player pads the difference with black.
How does detection work?
The tool scans frame edges for consistently black rows or columns across the top, bottom, or sides, and estimates the crop needed to remove them.
Will cropping affect video quality?
Cropping only removes the black border pixels — it doesn't re-encode or scale the remaining picture, so the visible content stays at its original resolution.
How we compare
| Feature | Online Tool Store | Desktop video editor | Command-line ffmpeg crop filter |
|---|---|---|---|
| No software install | Yes | No | No |
| Automatic bar detection | Yes | Manual | Manual |
| Free to use | Yes | Varies | Yes |
For a quick crop before sharing a clip, this beats opening a full video editor or writing an ffmpeg command.