Video Resizer
Resize and scale video resolution. Add a video, adjust the available settings, and export the processed result.
Tool guide
About Video Resizer
Change a video's output dimensions using the browser-based video tool. Resizing can reduce or enlarge the frame, but export quality, aspect ratio, codec support, and processing time depend on the selected settings and device resources.
How to use this tool
- 1Choose a source video and wait for its preview or metadata to load.
- 2Enter the target width and height or select a preset, then decide whether to preserve aspect ratio if the option is available.
- 3Start processing, wait for export to finish, and play the downloaded file to check framing, sound, and dimensions.
How the tool works
The tool decodes the input video, scales frames to the chosen output size, then encodes a new video using the supported browser or FFmpeg-based path. Scaling changes pixel dimensions; it cannot restore detail lost in a low-resolution source. Audio handling depends on the export settings.
Worked real-world example
Resizing a 1920×1080 video to 1280×720 keeps the common 16:9 shape. Entering unrelated dimensions can stretch or crop content depending on the tool's mode.
Common scenarios and use cases
Prepare a smaller frame for a platform, presentation, or device with a specific dimension limit.
Important details and limitations
Processing happens locally and can be slow or memory-intensive for large videos. Supported formats depend on the browser and encoder, and resizing may reduce quality. Keep the tab open until export completes and inspect the output.
Check the output unit as well as the number. If the result will be reused in another calculation, retain full precision where possible and round only at the end. For measurements governed by a technical specification, use the standard and tolerance required by that document.
Frequently asked questions
Will resizing make a video sharper?
No. Enlarging cannot recreate detail absent from the source.
Does the tool upload my video?
This tool processes files in the browser on your device.
Why is export slow?
Video decoding and encoding use substantial device memory and processing power.