Pixels and crop are different.
Resize changes pixel dimensions. Crop changes which part of the image survives. Changing aspect ratio often means doing one, the other, or adding empty space.
Video, GIF & Audio
Resize this video.
Choose a new output width while keeping the original aspect ratio.
1 Choose2 Adjust3 Download
Stays on your deviceYour video stays on your device. Re-encoding happens in this browser tab, so keep it open while the tool works.
Status
Choose a video to begin.
Browser support varies. WebM is used because it can be encoded directly by modern browsers without a server.
Useful to know
Four things worth knowing.
It cannot invent the frame.
A new shape cannot reveal content outside the original frame, and enlarging dimensions does not create genuine captured detail.
Check the edges.
Play the exported file from beginning to end and check picture, sound, crop, timing and orientation.
Size for the destination.
Pick the final destination first. A profile photo, print, story and website hero all want different shapes for a reason.