MPC Home Cinema - Choppy xvid playback

[280zx]

Standard xvid files play very poorly in mpc home cinema however 1080p x264 files playback smoothly and hardly use any cpu with dxva. I'm just using mpc hc's codecs at the momement, nothing else is installed on a fresh windows 7 x64 install.

Windows media player 11 plays back xvid just fine. Am I missing something? If I install koepi's xvid codec and set it to preferred in mpc then playback of xvid is ok, still a little choppy jumping forward or backward through the file. I have an intel i7920 running at 3.8ghz, 6 gigs ram and an nvidia gtx 280 so it seems strange that standard def xvid would choke. Any suggestions?

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[roozhou]

I guess your file is using packet-bitstream.

[XhmikosR]

Which Nvidia drivers are you using?

[280zx]

Version:

197.45 WHQL
Release Date:

2010.04.13

[280zx]

I guess your file is using packet-bitstream.

I should check but it happens with every xvid movie/tv show etc I try and I have quite a few to test on.

[XhmikosR]

Then that's your problem. Nvidia has broken EVR CP with mpc-hc. The last working version is 196.21. Report the issue to Nvidia; maybe they will fix it sometime soon.

[280zx]

Thanks for the info, I wouldn't have guessed they would be able to screw up xvid playback after all these years. Nice going nvidia. :)

[Polaris75]

I thought it was fixed in 197.45, the release notes say:

Fixes a video playback issue in Media Player Classic.


... and now that I think about it, I think it *was* fixed for a while after I updated my drivers, but then came back so I had to start my troubleshooting all over again to no avail, which led me here.

I guess I'll try going back to 196.21 for now.

[Polaris75]

Oh nevermind, I guess that fix is actually unrelated by the sound of the details from the release notes:

Windows Vista/Windows 7 64-bit Issues
Single GPU Issues
 Media Player Classic Home Cinema–playback of hardware‐accelerated video, such as
DivX or H.264, results in the driver crashing. [666639]

While DivX related, I would think a driver crash would make the video freeze, not stutter.

[Polaris75]

Reverting to 196.21 fixed it right up for me.

[Snubber]

So that's it! Stupid nvidia. I'm getting this problem with the 257.21 drivers ("the first driver release from the Release 256 family of drivers", whatever that means). I thought I was going crazy, with XVID movies stuttering while h264 played smoothly. Unfortunately I need the new drivers for GPU acceleration in Premiere CS5.

As you say Nvidia broke EVR CP, does that mean choosing another Output method in MPC-HC could fix this problem, like EVR non-CP or VMR9 or something?

[XhmikosR]

The problem has been fixed for me with v257.21. But yes, other renderers are not affected.

[namaiki]

For me, I had videos playing at 60fps.. (same as screen's refresh rate) when using EVR-CP. Not sure what was causing it.