Media player vista et les films

je n’ ai que certains de mes films qui passent ss mediaplayer 11 alors que j’ ai mis le vista codec pack , c bizarre.
quelqu’un peut m’ aider ?

Avec gspot, vérifie bien les codecs.

"Warning: DirectShow crashed while GSpot was attempting to obtain information about a codec.

This is usually due to damaged, misconfigured, conflicting, or poorly written codec drivers. It is possible, perhaps even likely, that other media players will crash when they attempt to play this file as well, as most of them will also use DirectShow. GSpot was able to intercept the crash, and has attempted to identify the codec or filter involved; uninstalling or reinstalling this codec or filter may solve the problem.

The codec was tentatively identified as:

Unknown video codec #16"
voila le message que j’obtients…
je resou sa comment?

a la suite de ce message il me propose de decocher une option afin d’eviter des crash , mais bon j’ ai fait abort ne sachant pas koi faire.