So, I just installed a clean OS. Windows 7 SP1. I had been using it for a few days, and gradually re-installing software. At some point, and I don't know where, something changed that caused my video playback to get slow and choppy. It doesn't matter if I use VLC, Mplayer, Divx, etc.
Videos that used to play nice and smooth are now choppy and cpu hogs. Wtf...
I've re-installed software, disabling AV, tried different codecs and settings, nothing has helped.
I welcome any suggestions.
WMP in windows 7 dose not need an external decoder it can handle any divx/xvid,avc,vc-1 encoded file aslo try updateing you graphics card drivers and see if that helps.