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stoping screen tear on videos?

S

skuzzzzy

Member
i recently bought a lg 3d monitor, http://www.newegg.com/Product/Product.aspx?Item=N82E16824005181&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&AID=10440897&PID=3332167&SID=u00000687 .

i dont receive screen tearing in games or if i do i turn vsync on and its gone. however everything else i do has screen tear, from movies (using vlc player and media player classic), online videos youtube, netflix. vsync force on doesnt work. any ideas? ive tried 100hz, 110hz and 120hz.

my video card is a asus gtx 570.

the tear is always just one line at the top, theres never multiple tears or placed anywhere else.
 
Seero said:
Have you tried using triple buffer?
Click to expand...
what difference would that make for tearing? triple buffering is for when you have vsync enabled so if its tearing then vsync would obviously not even be on in the first place. anyway its videos that are tearing and the only time I have seen that is if aero is not enabled.
 
toyota said:
no, its aero being off that will cause screen tearing in videos.
Click to expand...

Yea, turning on Aero makes Windows itself VSync which should correct the screen tearing.

Kinda curious if a 120hz monitor needs higher than idle memory clock speeds like multi-monitor setups do or if the multi-monitor setups only require the higher clocks to facilitate the extended desktops.
 
toyota said:
what difference would that make for tearing? triple buffering is for when you have vsync enabled so if its tearing then vsync would obviously not even be on in the first place. anyway its videos that are tearing and the only time I have seen that is if aero is not enabled.
Click to expand...
In theory, the difference is night and day. In practice, all OP needs to do is the check the checkbox.

[Theorycraft]
In theory, vsync does resolve tearing due to the drawing as the time of swapping buffers. However, if the time of fill + swap is longer than the refresh rate, then tear will still occur. Triple buffer on the other hand, won't have this problem because there is always a complete buffer to draw. Since there are 2 back buffers and are being filled alternatively, there is always one (exception at t0) buffer to be sent to the front buffer. Since front buffer is locked until its contain is fully sent to display, tearing will not happen.

With Triple buffer and not vsync, programs can draw frames as fast as they are capable to, in other words, high FPS. The down side is, there will be frames that were drawn, but never got sent to display.

With Triple buff and vsync, FPS is capped at refresh rate, and no frames can be drawn to back buffer if both back buffers are new. That means, no frame is skipped.
[/Theorycraft]
 
Seero said:
Just curious, how did you know the first line has tearing problem? Is the first line of everything off by one frame? Can you supply a screenshot?
Click to expand...


now i cant get it to tear, before it was tearing on all video types. and it wasnt the first line, just near the top
 
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