Resize Video Online
Change video width while preserving its original aspect ratio and download a compatible MP4.
The FFmpeg engine downloads from a CDN once. Your media is not uploaded.
How to use the online video resizer
- STEP 1Choose a supported video up to 200 MB.
- STEP 2Select an output width.
- STEP 3Resize and download the MP4.
About this tool
Create smaller delivery files, standard web widths, presentation-friendly clips, or larger working copies without stretching the picture.
Available widths are 640, 854, 1280, and 1920 pixels.
Lanczos scaling calculates an even proportional height required for compatible H.264 output.
Frequently asked questions
Is aspect ratio preserved?
Yes. You choose the width and FFmpeg calculates an even output height from the original aspect ratio.
Can resizing improve low-resolution quality?
Upscaling increases pixel dimensions but cannot recreate missing source detail.
Which format is downloaded?
The result is a compatible H.264 MP4 with AAC audio.