I received word from Picard today that he's been working on a native H.264 AVC (Advanced Video Coding) plugin for TCPMP, the popular multimedia player for Windows Mobile and Palm OS. Until now, AVC-encoded video clips were played through
a stripped-down version of the ffmpeg library the ffmpeg plugin that comes with TCPMP.
You can download TCPMP V0.71b and the experimental AVC plugin
from here. Note, however, that this is the first test release and it doesn't support a couple of AVC properties yet, such as CABAC and weighted prediction. Picard is also still working on adding WMMX support for Pocket PCs.
Other changes in V0.71b include: msvideo1 and cinepak decoder included, DIV3 decoder artifact fix, http/mms streaming fix (WinCE).
Related: TCPMP/Betaplayer sets standards with AVC support