How to compress a video without changing its dimensions
Use an encoder that keeps the original frame size while changing quality. Koldflux’s browser compressor uses bounding-box presets and may resize or round dimensions to even numbers; it cannot guarantee unchanged dimensions for every source.
Check these first
- Whether the tool you're using lets you fix resolution and only change quality/bitrate
Likely causes
- Compression is entangled with a resize step
Some tools resize and compress together by default; the dimensions only need to change if you specifically want them to.
Fix it
- Keep source dimensions in your editor
Disable resizing in an editor that exposes output dimensions. After encoding, compare both width and height with the source. The linked Koldflux preset compressor may resize, so use it only if that tradeoff is acceptable.
Check your file
Extension and MIME type are labels, not proof of the container. Dimensions and duration come from this browser's media reader. This does not detect codecs, bitrate, corruption or platform upload compatibility. Files and measurements are not sent anywhere.
Prepare a copy in Koldflux, review its output and check the current destination requirements before publishing.
Automate this in Koldflux