Set panel and TV as primaries?

liquidsense

Member
Aug 23, 2006
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Please let me preface this by saying that I'm at my wit's end with this issue I'm having. And that I'm at a slightly above average in computer literacy. I have an ATI Mobility Radeon 9000 video card on two computers in my home. On occasion, I have connected either one of them to my television via a basic s-video cable.

On several occasions, I have been able to set the computer's monitor and the television as primaries, such that videos will play on both the computer and the tv at the same time. (In the "display" settings, there are two boxes under both the computer monitor and the tv icons. One is a 'circle' (primary), and the other is two 'squares' (secondary)).

For some reasons, I cannot replicate this setting. For the life of me, I cannot get the video to play on both screens. When I select the 'circle' on one, the other automatically becomes the squares. I did a basic search on Google, and even read an article that stated that Windows XP does not allow one to play a video on both screens---which is obviously not true, since I've done it many times.

Not more than 2 weeks ago, I set up a basic dual monitor for my folks, and had the same problem. I worked on it for several hours, and after tweaking this-and-that and making changes to various settings--- it suddenly allowed me to select two 'circles' and viola, both monitors showed video.

Why on earth am I having this problem? Am I missing some obvious setting and being an idiot?
 

xtknight

Elite Member
Oct 15, 2004
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Many media players use overlay and overlay has issues with dual monitors to say the least. Other renderers like the video mixing renderer will play on both monitors just fine. If you use WMP, Zoom Player, or Media Player Classic, I know you can set which one is being used (tools->options->performance->advanced->High Quality Mode in WMP, view->options->output->VMR9 windowed in MPC, elsewhere in Zoom). VideoLAN Client may not even have the problem by default but if it does use the 'gl' renderer.
 

Peter

Elite Member
Oct 15, 1999
9,640
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Overlay does not have "issues" with dual monitors, it is simply that overlays do not clone. ATi drivers have "Theater Mode" which lets you run the video on the main screen, and at the same time feed the video fullscreen onto the TV-out.

The alternative workaround, not using the hardware video overlay engine and let the software render the video to the display surface, is not nearly as good an idea because CPU and system load is considerably higher.
 

Visual

Member
Oct 27, 2001
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not only ati drivers, but nvidia too. haven't ran them recently so it might've changed or i might've forgotten details, but i think it had an "Overlay" category with settings for exactly that - you can set it to automatically stretch any overlays from the primary monitor on the secondary one, apply some zooming and stuff, etc.

and no, you've not had two primary monitors - you're confusing something.