Direct answer
Which free video compressor should you choose?
Choose CreatorZip for local browser compression without signup on Free (one file up to 250MB), HandBrake for advanced desktop encoding, VLC for occasional conversion in your media player, or Clipchamp when you also need editing and free exports up to 1080p with Microsoft sign-in. There is no universal winner: test the same clip and inspect size, quality, audio, duration, and playback.