Hi, I am considering getting the Nvidia Purevideo codecs.
Only problem is I don't seem to have control over which codecs are used by which programs.

I have tried a utility called FilterManager but no matter how much I change the merits of codecs it makes no difference, perhaps there is a problem with the program?

Is it possible to tell a program to deliberately use a certain codec or is the choice of codec programmed into the various media players, dependant on what is registered in the windows registry?

For example, I had the Purevideo codecs installed as a trial but Windows Media 9 would play high definition wmv files using Windows media codecs. If I opened an mpeg, it used the nividia Purevideo codecs.

Now the Purevideo trial has lapsed, although I still have the codecs on the computer and registered I can't get them to be used.

The Windows media player was using Nero Video codec and audio codec last time I checked.

Is there some information available for the basics of how codecs are used, selected and controlled?

Thanks in advance

You're right. Always the decoder with higher priority will be applied. But it is not program but DirectShow dependent (which is controlled by DirectX you know).


What filter manager have you tried? Radlight Filter Manager can change the value for example. If you change the value, it'll tell DirectShow, which codec to use. However it's quite a complicated job to set up all these merits. That's why I don't do that

You may check RFM's site for more basic information on this:

If you're experiencing problems while using it, report the bug:

chp: thanks for the reply.
Yes it is Radlight's filter manager that I used. It did not seem to save the changes.

Anyway I will look up the info you have suggested, see how I go.

Cheers