Make an MP4 video smaller

Re-encode an MP4 at a chosen video bitrate. Keep the original, inspect the compressed result and compare quality before replacing any files.

Already compressed MP4 files may not shrink at the same settings. Pick a bitrate below the source rate and inspect faces, text and motion afterward.

Will the resolution be intentionally reduced?

This preset does not ask for a resolution change. Check the actual output metadata for your source.

Can I choose a target size?

The interface also offers a target-size estimate where supported; it is not an exact byte guarantee.

JavaScript is required for file selection and processing.