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Desktop Monitoring = poor playback on PAL broadcast monitor

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ateale
Desktop Monitoring = poor playback on PAL broadcast monitor
on Jun 11, 2007 at 2:21:51 am

hey guys,

We are trying to play video out to our 2nd display (broadcast monitor) via the Default Kona Output "Macintosh Desktop", but the playback is quite poor.

If I drag a movie out to the 2nd display, using QuickTime Player, it looks like the video is playing at 18fps.

If I put the cursor out to the 2nd display and move it around the refresh rate is slow/low.
I thought it might be something to do with the Sys Prefs; Displays - currently the 2nd display is set to 1280x720 @ 60Hz.
I thought it would at least have to be at 50Hz - PAL? But 60Hz is all that can be selected.

If I play a clip out to the 2nd display using the Kona TV or VTR Exchange is play perfectly.

Is there some limitation to playback with desktop monitoring?

Cheers!

Adam



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gary adcock
Re: Desktop Monitoring = poor playback on PAL broadcast monitor
on Jun 11, 2007 at 11:54:26 am

I am confused..

you say that it works great with Kona TV, but bad when you play out your desktop to a video monitor? of course, especially if you are trying to force interlace within a progressive display.

sounds like operator error to me.


[ateale] "We are trying to play video out to our 2nd display (broadcast monitor) via the Default Kona Output "Macintosh Desktop", but the playback is quite poor. "

that is to show the apple desktop on your secondary display or when you want to record content from your computer into a video device.

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows


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ateale
Re: Desktop Monitoring = poor playback on PAL broadcast monitor
on Jun 12, 2007 at 4:02:51 am

Hi Gary,

Thanks for getting back to me. I think u are right about it being operator error :)

"that is to show the apple desktop on your secondary display"

Yes that is what I meant - is it possible to get the Desktop to refresh smoothly?
Should the desktop monitoring be smooth?

Thanks again,

Adam



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