The Core Pocket Media Player is an open-source media player for Palm OS-based
Server 1 Afreecodec
a multimedia player which can play most of the differently encoded video formats
playback of quicktime movies (.mov) and many other formats.
Qvod Player is an all-in-one media player and also a online broadcast player.
Play MKV video files with this tool
Powerful DVD video player supports almost all formats.