ffdshow VC-1 issues

[mrg155]

Hi, I'm having trouble with getting smooth playback of ripped blu-rays using the VC-1 codec. MKVs with h264 video playback perfectly in Windows Media Center. I thought Windows 7 had native VC-1 decoding but using LAV Splitter and no additional video codec I get no VC-1 video in WMP or WMC. In any event I want to use ffdshow for the subtitles and audio mixer options. Again, h264 video in MKV container with ffdshow (rev 4399) default install is fine and seeking forward or backward in WMC works as it should. With VC-1 video it plays but has a very noticeable judder/jitter as if alternate frames are missing and when I try to seek to a different point it aborts playing. This happens with the VC-1 option in ffdshow set to "libavcodec". If I set it to wmv9 I get no video, only audio. My system is an Asus P7H55 m'board with a first gen i3 processor (i.e. not Sandybridge) running W7 Professional 32-bit. I am not trying to use DXVA; processor load is never >30%.

Any ideas if there are ffdshow settings that I need to change to fix this? On a slight tangent why do I not see any native VC-1 playback in Windows 7 as I thought this was Microsoft's own codec and supported by WMP/WMC?

Thanks

[El Heggunte]

First of all, are you sure you have configured the "Preferred Filter Tweaker" correctly

Secondly, what are the versions of LAV Filters and ffdshow you are using

As for LAV Video, now it can function as a wrapper for the M$ VC-1 decoder, and IMHO it does a better job than ffdshow

Finally, why insist on WMP or WMC? MPC-HC, PotPlayer Mini or ZoomPlayer Freeware Edition are much-better options

[mrg155]

Thanks for the reply.

I'm using LAV splitter 0.46 and ffdshow rev 4399 (latest version)

Yes, filters appropriately tweaked and graphstudio confirms ffdshow used for video and audio decoding.

Does LAV video support PGS subtitles? Last time I checked although LAV splitter provides a subtitles stream the LAV video decoder won't show the subtitles, whereas ffdshow does and works well.

Re the MS VC-1 decoder - I'm not sure I even have this? Why won't VC-1 play natively with just the MKV splitter if there is already a VC-1 decoder? Is the MS VC-1 filter picky about the splitter that sends it the video stream? I also need ffdshow audio for the customisable mixer, which LAV audio does not (yet) have, though I see it is on the to-do list of the developer.

I need/want to use WMC for the 10-foot interface and the integrated live TV function as my HTPC has four DVB tuners installed.