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More => Old Versions => JRiver Media Center 18 for Windows => Topic started by: phillil on February 10, 2013, 05:56:53 am

Title: Video Tearing
Post by: phillil on February 10, 2013, 05:56:53 am
I play mostly 1080p mkv's, and every now and again I experience really bad tearing artifacts.

Restarting the PC doesn't fix the issue, but changing from Red October to ROHQ (or vice versa) fixes the problem.

This issue has really been apparent through the previous versions of MC and since the family watch movies almost daily this is really beginning to be a pain, as the wife won't / can't come out of theatre view etc to swap to/from RO HQ setting.

My PC is plenty powerful enough (i5 750, ATI HD4550), am I'm sure it's just a setting somewhere??

I am running W7 with no other software, other than MC

Any help/tips would be appreciated.

Many thanks
Title: Re: Video Tearing
Post by: JimH on February 10, 2013, 08:20:30 am
Is it possible that just pausing and resuming or stopping and restarting would fix it?  I suppose you may have tried.

I'm wondering if it's not able to get the data fast enough.
Title: Re: Video Tearing
Post by: phillil on February 10, 2013, 08:26:48 am
No - pausing, stopping, restarting doesn't fix.

Neither does restarting the PC.

Switching between Red October and Red October HQ normally does the trick though.

It doesn't seem to skip or drop frames, it just appears as though the top and bottom half of the display aren't synced properly??

Thanks for the reply by the way.
Title: Re: Video Tearing
Post by: JimH on February 10, 2013, 09:12:35 am
No - pausing, stopping, restarting doesn't fix.

Neither does restarting the PC.

Even a complete power down?  That's very strange.

Or a power down of the display?

What is the full version you're using?  If it's not the latest from the top of this board, please try it.
Title: Re: Video Tearing
Post by: mykillk on February 10, 2013, 01:21:55 pm
Do you use Windows Aero mode?
Title: Re: Video Tearing
Post by: jmone on February 10, 2013, 01:35:29 pm
The HD4550 will not be enough for hassel free RQHQ - With RO have you tried toggling HW Acceleration On/Off?
Title: Re: Video Tearing
Post by: glynor on February 10, 2013, 01:40:39 pm
I think... Maybe, the GPU is drawing faster than your display can refresh.  Is it tearing like this?

(http://upload.wikimedia.org/wikipedia/commons/thumb/0/03/Tearing_%28simulated%29.jpg/638px-Tearing_%28simulated%29.jpg)

If so, it could be V-Sync settings on your graphics card.

V-Sync locks the display output (from your GPU) to the current refresh rate of your monitor (typically ~60Hz with a computer monitor, though it can vary with HDTVs).  This prevents tearing, which is when the GPU sends a new frame "misaligned" with when your display is able to draw it (generally because the GPU is running faster-than the display can refresh).

Many times, for running benchmarks for no reason other than to generate high scores, you might disable V-Sync (because otherwise, your FPS average will be limited to your current display refresh rate).  And, some absurdly dedicated FPS gamers swear by disabling it because, even though it looks like crap, the updated information in the "tears" might give them a few milliseconds "twitch advantage" in competitive games.

For everyone else, you should have V-Sync turned on in your GPU drivers.

I'd check there.