What you can do
- Crop fills a target frame; letterbox preserves the full frame with added space.
- Use Resize for a target resolution or aspect ratio such as 9:16.
Video Resizer and Letterbox Tool
Resize, crop and letterbox videos locally with browser-based FFmpeg.
08 — Video tools
Video tools
One video at a time · sequential processing
Your video is processed only in this browser and is never uploaded.
Tool guide / ONLY MY KIT
Resize and reframe videos locally
Choose aspect ratio, resolution and fit method, including manual crop selection and letterbox backgrounds.
How to use it
- Select the video to resize or reframe.
- Choose aspect ratio and output resolution.
- Select crop, full-frame or background presentation and adjust the frame.
- Review the settings and create the new video.