Also, you have not stated what video card you have nor the amount of PC memory.
Really you need an AGP card with minimum of 64 Mb memory on it and 512 MB PC system RAM (DDR).
Low end graphics cards "steal" memory from the system RAM, reducing performance of applications requiring much video buffering.
I have had it running on a P4, 2.6, XP, ATI 9200, DVBviewer with loads of power to spare but there were a few tricks involved. Enabling Hardware Acceleration in the Registry, I got some god advice from the DVBviewer forum at the time, see link http://www.dvbviewer.com/forum/index.php?showtopic=2547
Don't forget a P4 celeron is a stripped down version of a true intel really it's only around a 1.9GHz CPU. I don't really want to mess around with the registery. If anyone has it going on a P4 2.4 celeron I'd be interested to know how...
I've now got Euro1080, pic breakup every few secs though. Any way to adjust settings with ProgDVB to help this ? I
Reason was I changed the video to 'by codec' In fact anyone seems to work apart from ProgDVB decoder which caused the pc to reboot all the time :-( I also probably did'nt have enough signal last time I tried - now 75%
With DVB viewer with the same codec used the pc freezes though.
Great to get it at last with out the damn pc rebooting or freezing anyway. I will now also try the registery tweak though I don't use the winDVD codec ??