Why do screens make blips when playing out a black to white transitional animation in full screen mode ?

xMax

Senior member
Sep 2, 2005
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Try it yourself. Make a simple animation that transitions from pure black to pure white in full screen mode where nothing but the simple pure gray images are seen. You can run the animation at any frame rates you like, 1 FPS, 10 FPS, or even 1 frame every 6 seconds. You can also render the animation to an uncompressed or fully compressed format.

Heck, you can get a RAM player or a ramdisk and load this massively compressed extremely low frame rate animation onto an ultra fast brand new workstation hooked up to a high refresh rate low resolution CRT and you will still get those bleeps on the screen.

Those bleeps are like this horizontal line or segment that slides down or up the screen as the animation keeps pl;aying out repeatedly. Its easily noticeable because it has a slightly different shade of gray. But it comes on and off, as though it finishes its cycle of sliding down my screen, then waits a few frames, and then comes again for another cycle. Almost like it has a personality.

Is it possible to overcome this effect, or is it inherent to every monitor in the world and essentially impossible to overcome.

Im only looking into this because it somehow relates to my work, an animation.




 

xtknight

Elite Member
Oct 15, 2004
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Maybe a vertical sync issue or issue with video mixing renderer? Not sure...
 

xMax

Senior member
Sep 2, 2005
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I seriously need to overcome this blasted issue. Im going to look into the vertical sync and video mixing rendered.

I wish i could know if im the only one who is experiencing this problem.

any comments would really help guys.

 

xtknight

Elite Member
Oct 15, 2004
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Do you mean tearing? I get it with videos all the time too...even with Vsync on. It does suck. Framebuffer lock under media player classic fixed it for somebody if I recall. I haven't tried that yet myself.
 

sandorski

No Lifer
Oct 10, 1999
70,698
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I'd hazzard a guess that it's a Monitor issue. Black displays Nothing, White displays Everything(for lack of a better term).
 

xMax

Senior member
Sep 2, 2005
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This is obviously the aim here. To determine if its a monitor problem or if its a video card or monitor setting or video playback setting problem. So far, ive tested it on several different monitors, even on a super fast new computer, and it always happens. So its not just my monitor. Im going to check out the video mixing renderer setting in windows media player 10.

Is it tearing. Well, i dont know. But if my description of the effect is what you people know as tearing, then yeah. Its tearing me apart because its the only remaining obstacle that im trying to overcome.

Ill be back.

 

xMax

Senior member
Sep 2, 2005
448
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Amazing! It is tearing or whatever its called and it is caused by the video mixing renderer and the overlay settings. They have to be checked in windows media player. The thing is that they come checked, but i unchecked them because they were causing some strange vertical compression like effect on my images.

But now ive got it.

******* A!