Perhaps the most notable solution, VLC for iOS uses an open-source engine to decode almost any codec, including Xvid, directly on the iPad.
This player provides a premium experience by combining wide codec support with a metadata-rich interface, often cited by reviewers at Macworld as the gold standard for iPad media consumption. Xvid Player Ipad
While third-party players are effective, some users prefer . Perhaps the most notable solution, VLC for iOS