Quote Originally Posted by Squall View Post
Ffdshow is a must, however, by itself it isn't able to play a lot of .avi files. As for codec-packs, you just have to be careful of the ones that no one's heard of. Popular codec-packs are constantly monitored at maintained. K-lite's been working fine for me in Vista as well.
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The ffdshow internal filter, Libavcodec, is constantly being updated to incorporate new codecs natively
but, as you said, you can always tell ffdshow to use external d-show filters for any that it can't support

My codec settings are: