I have the same problem as well.
The strange thing is that some mkv's work but most don't (roughly 1 out of 10 will work). They simply play the file but give a black screen.
H/W accelleration on or off doesn't matter, neither does vobsub.
When I switch to ffdshow or AVIVO they work again.
For audio I use the Cyberlink Codec as well, and that still works.
Outside of MP I can use the Cyberlink Codec without any trouble.
Has this already been reported as an official bug ?
@ ThaClown: What I'm concerned with is.. (with both your suggestion and fillerguy's).. outside of Mediaportal, things work just fine on all fronts, so making huge changes to the codecs installed, I'm worried about breaking what already works (I have done this SO many times).
I think I have the previous build of PowerDVD (not the newest yet), ffdshow (CCCP pack) and all my subtitles work great. Using the Cyberlink codec for video, ffdshow for audio and subtitles (maybe it's vobsub, I still don't know...), I can play back basically everything with H.264. ONLY in Mediaportal does this video stuttering happen using the same exact codecs.
I'm curious... was your video stuttering like this BEFORE the Cyberlink update? or are you simply stating that you don't have problems with it? Meaning, was it "problem, solution"? Or "never had that problem"?
BUT, I will try both solutions when I get back to my HTPC (at work atm)... thanks for the suggestions!
Haven't tried this yet, I'll give it a shot this evening.I have to use ffdshow raw as the postproccessor for the powerdvd ultra codecs to work with mkv files. did you try that?
Actually this is no more an issue, it has been resolved in the other thread forcing the Haali Media Splitter to load the VSFilter.dll, using the appropriate filter option (under Compatibility, set "Autoload VSFilter" to "yes").From what I saw the problem is only with MKV's containing embedded subtitles... They fail to render, except when using ffdshow...