What is the XVID format?

XVID — Xvid Video

Xvid is an open-source MPEG-4 Part 2 video codec, the free counterpart of DivX, used for countless films and series shared as AVI in the 2000s.

RW converts both ways XVID Converter

Convert XVID to

Xvid compresses well for standard-definition video; many DVD players and TVs with a USB port play Xvid AVI files.

Phones, Macs and browsers handle MP4 (H.264) better. Converting Xvid to MP4 makes it play everywhere, and MP4 to Xvid serves older players.