Resize MP4 files
Upload an MP4 file and scale it to a new resolution. The aspect ratio is preserved, and the video is re-encoded, so longer files take a while.
Resolution
Upload an MP4 file and scale it to a new resolution. The aspect ratio is preserved, and the video is re-encoded, so longer files take a while.
Phone cameras default to resolutions most destinations never display. Resizing your MP4 down to 1080p or 720p re-encodes it at the new dimensions, keeping the aspect ratio unless you decide otherwise, and the size savings are immediate.
Strongly: pixel count scales with both dimensions. 4K to 1080p is a 75 percent pixel reduction, and file size follows close behind at a matched quality level.
1080×1920 is the standard vertical frame. If your source is horizontal, crop to vertical first, then resize.
No, the resize happens locally.