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1080p HD MKV Files Stutter on HTPC. Please Help!

post #1 of 20
4/20/12 at 12:43am
Thread Starter 
Every 10 - 20 seconds there is a stutter or frame drop for a second or two when playing 1080p MKV files on my htpc. It happens in all programs including xbmc, vlc, power dvd, etc. All movies differ in the amount they stutter. Some stutter more than others, while some don't stutter much at all.

HTPC specs:
Sli 590
2600k cpu
16 gb ram

Let me know if you need any other info to diagnose the problem.


Thank you
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post #2 of 20
4/20/12 at 5:12am
try installing THIS DIRECTX update OR
try updating your graphics drivers from the manufacturer of the GPU
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post #3 of 20
4/20/12 at 12:01pm
Is this from your HD or over a network connection?
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post #4 of 20
4/20/12 at 1:59pm
Thread Starter 
from hdd, i have all the latest updates
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post #5 of 20
4/21/12 at 1:32am
There are reports of this happening with the newer (I think the new 300.x drivers, but it may even go back to the late 29x releases) nvidia display drivers. I saw a few threads discussing it on the official Nvidia forums. I'm not experiencing the issue (GTX 470 with the newest 300 beta drivers, overclocking through Precision X, and disabling desktop scaling and HDMI audio out through the nvidia control panel. I use Media Player Home Cinema beta releases.) so I didn't really dig through the topics. But I'd suggest you take a look over there for a solution. I think the consensus is that it's a pretty much just a driver issue.
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post #6 of 20
4/21/12 at 7:20am
Yeah, I was thinking that it was a network issue, but try a different driver. I'm using 290.53 with a 440 and it works perfectly.
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post #7 of 20
4/21/12 at 12:18pm
Thread Starter 
Ok il try downgrading my drivers. But then newer games wont run properly....
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post #8 of 20
4/21/12 at 1:52pm
Try demuxing the mkv back to an avchd format and see what happens then.
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post #9 of 20
4/21/12 at 8:46pm
Thread Starter 
Quote:
Originally Posted by audit13 View Post

Try demuxing the mkv back to an avchd format and see what happens then.

What program should I use?
And will this result in any loss of PQ?
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post #10 of 20
4/22/12 at 12:32pm
Quote:
Originally Posted by promark255 View Post

What program should I use?
And will this result in any loss of PQ?

Use TSMuxer. There is absolutely no reduction in quality. MKV is a container.

Use TSMuxer with the mkv as the input file and avchd as the output. Look for the m2ts file in the stream folder. Many programs will play back the m2ts file with no problem.

Maybe you're having problems with the mkv due to header compression issues.
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post #11 of 20
4/22/12 at 8:54pm
Thread Starter 
Ok il try, thanks.

header comp?
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post #12 of 20
4/23/12 at 7:06am
Quote:
Originally Posted by promark255 View Post

Ok il try, thanks.

header comp?

MKV files have a header file which some programs can't handle properly.

This is an older article but could be relevant: http://www.mediasmartserver.net/2010...-side-effects/

No header required in an avchd format.
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post #13 of 20
4/24/12 at 4:25pm
Do the files stutter when played on a diff PC? I had a similar problem. Some vids played smooth on my main PC, but would stutter on my HTPC. I am using MPC-HC as external player to MediaPortal, I did some reconfig and changed MPC-HC to us MadVR instead of EVR and viola, everything was back to normal. Something to consider (changing your filter tools).
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post #14 of 20
4/24/12 at 9:15pm
Thread Starter 
Currently im using Xbmc, what do you mean by changing filter tools?
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post #15 of 20
4/26/12 at 6:41pm
Quote:
Originally Posted by promark255 View Post

Currently im using Xbmc, what do you mean by changing filter tools?

XBMC, are you running "Fullscreen in a Window"? If so, try just "Fullscreen". Do you have hardware acceleration turned on in XBMC? Try turning that on or off to see if things are better.
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post #16 of 20
4/26/12 at 8:37pm
DXVA.

Does more harm than good in most instances, imo. AMD and Intel both.
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post #17 of 20
4/27/12 at 5:38pm
Thread Starter 
Quote:
Originally Posted by assassin View Post

DXVA.

Does more harm than good in most instances, imo. AMD and Intel both.

What rendering method should I use then?
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post #18 of 20
4/27/12 at 6:35pm
Quote:
Originally Posted by promark255 View Post

What rendering method should I use then?

"Auto Detect" or "Software".

Try both. See which you like better.
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post #19 of 20
4/27/12 at 9:03pm
What refresh rate are you using? I have been having a stutter issue for a while which just was resolved last night. I did not realize on my GT430 card the refresh rate needed to be set to 23hz in the display settings in the windows control panel, not 24hz for MKV files. Playback is perfect now.
It had been playing at 24 hz with stuttters.
Using itunes i had to change to 60hz for smooth playback.
Give it a try.
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post #20 of 20
4/29/12 at 2:32pm
Thread Starter 
Quote:
Originally Posted by Alan Winslow View Post

What refresh rate are you using? I have been having a stutter issue for a while which just was resolved last night. I did not realize on my GT430 card the refresh rate needed to be set to 23hz in the display settings in the windows control panel, not 24hz for MKV files. Playback is perfect now.
It had been playing at 24 hz with stuttters.
Using itunes i had to change to 60hz for smooth playback.
Give it a try.

OK il give that a try as well.

Thanks everyone!
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