I have been using a commercial H.264 decoder for a few years now, and I figured I'd spread the word about a great deal being offered for a limited time.  CoreAVC, a commercial H.264 decoder by CoreCodec is selling for $10 after you insert a promo code.  This deal is only good until February 28th, so get it while it's hot!  The promo code is displayed at the purchase screen after you click buy for CoreAVC.  CoreAVC is faster than all other H.264 decoders including those found in FFDShow Tryouts (K-Lite Codec Pack or Combined Community Codec Pack).  CoreAVC is both a software and a hardware decoder, depending on what graphics card you own.

CoreAVC is useful for playing 1080p videos or movies on slower computers without lag.  It can be used to watch Blu-Ray movies, too.  If you've ever downloaded a .mp4 file from youtube, CoreAVC plays that too.  I can't tell you everything about it, except that I have used it for many years, it keeps getting better with every release, and it is maintained and updated often.

CoreAVC is a decoder, not a program--which means it can work with Media Player Classic or Windows Media Player (pretty much any player that supports DirectShow for video output.

I am not affiliated with CoreAVC and I was not paid to write this or advertise their program--although I wish I was. lol...

Get CoreAVC at http://corecodec.com/

-Neil