I think the answer to your question can be found in
adicoto's post in this thread:
http://forum.bsplayer.org/viewtopic.php?p=11128#11128
P.S.: As this thread also refers and points you to the well known
K-Lite codec-pack, please note that by using codec-packs you might be tempted to install more than necessary. In this connection please note that
more surely
isn't equivalent to
better. To the contrary!!
A general advice re the use of codec-packs: The art is knowing to restrict yourself!
In most situations, you do not need to install codec/filter packs and
certainly not every codec/filter that comes with these packs. In fact,
you may run into problems if you install too many codec/filters on your computer.
It is highly recommended that you only install the codec/filters that you need, so be very selective!