ok, I played a 904mb 720p mp4 file that is encoded to H.264/MPEG-4 AVC1 codec in a Sony PSP mp4 container, according to G-Spot.
when playing full screen here is what I found:
VLC ------------ 80mb ram, 16-20% cpu usage - smooth playback
WMP12 64bit--- 80mb ram, 1-5% cpu usage - slightly choppy playback
WMP12 32bit--- 65mb ram, 1-5% cpu usage - slightly choppy playback
Note that 64bit wmp uses the same memory as VLC, though 32bit used less. I don't know why wmp was getting choppy playback, so I uninstalled K-Light, and installed Shark's windows 7 codec pack. Still had the choppy playback, even after trying different settings in the H264 tab.
I'm not sure why it's not playing smoothly. This file does stream smoothly through my xbox 360 though.
Here is a link to the file on Vimeo. Scroll down, and there is a torrent you can download. The Third & The Seventh on Vimeo http://www.temporarygate.com/TheThir...th.mp4.torrent
EDIT: Ok, I think I got it. I wasn't hitting the "save all settings" button on the misc tab in Shark's settings screen. after I did that, and changed everything to ffdshow in the "swap" tab, I got silky smooth playback in WMP12.
BUT... now with a proper codec, WMP12 is using 103mb of ram and about 15-18% cpu.