Howdy all!
First of all you guys got a great site here! As I'm a newbie to codec's (just leared all about it yesterday) I have a few questions.
I recently performed a clean install of XP Home to reobtain some of the freebie software that comes with it (accidentally uninstalled it a long time ago). I updated the stock WMP9 to WMP10 just cause it's newer, also updated the nVidia GeForce card to their newest 77.72 driver, also installed some programs like INtervideo WinDVR for my capture card and Sonic MyDVD.
The problem showed up when I went to view a previously recorded television show from the hard drive (i used a second hard drive to first capture all my goodies before destructively recovering the OS). The MPEG files open up in the WMP10 player and do play, sound is fine, but wherever there's motion on the screeen there's the ugly black interlacing lines.
I have read a lot about people having problem with nVidia's newest driver and I'm planning to step back down one tonight as my computer is at home w/o the web. I tried to update WMP10's codec pack (nope), used Sherlock to find that two codec's are broken (LeadMCMP/MJPEG Codec's). I'm wondering if the problem lies within the broken codec's, WMP10 fighting with the new driver, or the picky Intervideo recording that may have something to do proprietarily.
What I do plan to do is abandon WMP10 (uninstall it and disable WMP9 from settings) and use K-Lite full version since it has the popular Media Player Classic along with a ton of listed codecs.
What's some of the advice for making this move to K-Lite?

I also have a question that's been puzzling me. I own the DVD "Concert for George" (George Harrison). The audio wavers in it throughout. It'll go from soft to loud. It also seems to react to loud sounds on the DVD like a first drum beat. Sounds like someone's messing around with the soundboard. The DVD plays fine in a regular DVD player and I've also had this problem with the movie "School of Rock". I always thought that I had a bootlegged copy of the movie or something but with all this knowledge of codec's I'm starting to believe that it could be due to the codec's that run with on the WMP player. Am I right? It'd be great to now enjoy the DVD with perfect sound. My wife and I prefer to view movies on the PC since the monitor screen (17") is larger than our RV (13") and I've got a good Klipisch 2.1 audio system hooked to the PC.

Many thanks to those that reply.
Chris B. in Iowa

Problem solved! I uninstalled the nVidia 77.72 and went with 71.89 just in case. That didn't help but I figured that I'll wait for nVidia to improve upon their driver. I took out WMP10 and went back to 9. I also disabled WMP from the features option in the add/remove program screen.
I installed the K-Lite Mega Codec pack and tried out the Media Player Classic. Everything's fine now! It takes everything that I threw at it! Even the audio problem in my "Concert for George" DVD was perfect. Yes! I got that one back!
I tried the BS player that comes with the pack but I still had the interlacing problem. I checked my system out with the Sherlock utility and now had three broken codec but I won't touch a thing now since it's working swell for my purposes, the old "isn't broke, don't fix it".
I would thank those that offered their advice to help but after 30 views to this post and no replies I just I had to take the initiative myself. So I can't offer any thanks to you guys. But I am appreciative of this forum being available on the web and hopefully others can find it as helpful as I did.

Chris B.
in Iowa

Chris, i'm glad to see your problem was solved, even without help from our members

What's some of the advice for making this move to K-Lite?
My advice: install only the codecs you need and read this small guide