DisplayFusion RSS: Split monitor sharing screen

DisplayFusion RSS: Split monitor sharing screen https://www.displayfusion.com/Discussions/RSS/?TopicID=029e7796-bcd4-484d-b825-9bee16154bbd DisplayFusion RSS: Split monitor sharing screen Tue, 05 May 2026 16:29:20 GMT en hourly 1 https://www.displayfusion.com/Discussions/RSS/?TopicID=029e7796-bcd4-484d-b825-9bee16154bbd RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#28 Wed, 20 Jan 2021 20:15:31 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#28 DisplayFusion If you share a different window with Teams (e.g. share out Chrome or something) and then move a Notepad window in front of that Chrome window, does the same issue occur? ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#27 Thu, 14 Jan 2021 18:43:05 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#27 DisplayFusion

Quote:

@x3s: Thanks for posting that link, I remember that thread now, I was never able to reproduce this issue and still can't

Does it matter which application you put in front of the window that's being mirrored?

From my recollection it did not matter what application was in front. ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#26 Thu, 14 Jan 2021 18:36:20 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#26 DisplayFusion @x3s: Thanks for posting that link, I remember that thread now, I was never able to reproduce this issue and still can't

Does it matter which application you put in front of the window that's being mirrored? ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#25 Wed, 13 Jan 2021 19:36:07 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#25 DisplayFusion Thank you! Yes, I've done the same you think have. I move the mirror out of the way so I can work while someone else can see my screen. But I have to be careful not to cover the mirror window ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#24 Wed, 13 Jan 2021 17:41:34 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#24 DisplayFusion https://www.displayfusion.com/Discussions/View/websharing-a-mirror-window/?ID=9284cd9c-e91b-4de6-b464-c4037bf47d1e
This is the exact same behavior that I am experiencing. ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#23 Tue, 12 Jan 2021 20:22:14 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#23 DisplayFusion Not sure if there is one but I wanted to test the same way you were. I tested with "Mirror Window" and "Mirror Selected Area" and both worked fine for me. I'll do some more testing to see if I'm just missing something here. ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#22 Sat, 09 Jan 2021 02:15:24 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#22 DisplayFusion I think I'm using "Mirror Selected Area". What's the difference? ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#21 Sat, 09 Jan 2021 02:10:32 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#21 DisplayFusion Sorry for the delay on this, finally had a chance to test it out. I wasn't able to reproduce the issue here though. You're using the "Mirror Selected Area" function? Or "Mirror Window"? ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#20 Thu, 24 Dec 2020 17:55:30 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#20 DisplayFusion Ok, I'll do some testing with Teams next week and see what I can find out.

Thanks! ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#19 Wed, 23 Dec 2020 17:07:41 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#19 DisplayFusion Teams is the only program I've tried it with ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#18 Wed, 23 Dec 2020 16:20:10 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#18 DisplayFusion Does that happen only with Teams, or are you able to reproduce that same behaviour with other windows as well? ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#17 Tue, 22 Dec 2020 21:02:15 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#17 DisplayFusion One more issue about mirroring. If I am sharing my Mirrored area (with Teams, for example), if another window goes over it, the user sees a big gray blob blocking it. If they are only seeing that one Window, why would other windows be able to block it? Is there any way to prevent that?
The problem is that I'm looking at another part of the screen, and I'm not really paying attention to the part that is being shared, so it keeps happening without me realizing it. ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#16 Tue, 22 Dec 2020 13:59:07 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#16 DisplayFusion Thanks, that helped a lot ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#15 Tue, 22 Dec 2020 01:30:56 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#15 DisplayFusion I would recommend creating a Trigger rule to have it place the mirror output window in the spot that you'd like it to be. I've attached a screenshot example for reference.

Hope that helps! ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#14 Fri, 18 Dec 2020 19:42:23 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#14 DisplayFusion Not sure what you mean by the location. I select the top-left and bottom-right of the area I want to mirror. How do I determine the location of where the mirroring will take place?
You say that the mirrored window opens full screen by default. How do I change the default? Since I just have a single monitor that's 49" across, it makes no sense to open full-screen on my one and only monitor

When setting the polling interval, are the units always in milliseconds? ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#13 Fri, 18 Dec 2020 17:33:00 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#13 DisplayFusion Hi Peter,

The mirror selection will be whatever sized coordinates you set from the beginning, as well as whatever location you've set. The mirrored window just opens full screen on your primary monitor by default.

The default polling interval is 350ms, but it can be adjusted in the advanced settings.

Thanks! ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#12 Fri, 18 Dec 2020 14:07:51 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#12 DisplayFusion Thanks. Figured it out. It is very non-intuitive. It seems that the mirror it creates is the full size of my screen, with black bars around the area it's mirroring. So I moved it aside, to stop the recursion, and then I had to manually change the size. Is this how it's supposed to work? It would make sense to make the mirror the same size are the area it's mirroring. It would also make sense to not have the mirror overlay the mirrored area when it first starts, leading to the problem I had. It should create the mirror in another location on the screen.

Also, what is the default polling interval. What is a good setting to make it a little faster?

thanks ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#11 Thu, 17 Dec 2020 19:46:15 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#11 DisplayFusion Hi Peter,

It looks like your mirroring the box that's already getting mirrored, and it's creating a loop. If you move the window at the top away from the red box in the middle, it should prevent that.

Thanks! ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#10 Thu, 17 Dec 2020 18:59:41 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#10 DisplayFusion Here you go. My file is too big to attach, but here's a link: https://www.dropbox.com/s/b6xqpbgoxw6hj1j/2020-12-17%2012.43.24.mp4?dl=0 ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#9 Thu, 17 Dec 2020 17:33:38 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#9 DisplayFusion Hi Peter,

Could you send me over a video of the flashing happening?

For the functions, we don't have specific documentation on what every function does. Those mirror functions will mirror the specified monitor into a window. The border/no border just adds or removes a titlebar to the mirrored window.

The "With splits" function will allow you to mirror just the your monitor split, rather then the entire monitor. The "Selected Area" will allow you to select a certain section of your monitor to mirror. The "Window" function will mirror only the specified window.

Hope that clears things up! ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#8 Wed, 16 Dec 2020 21:10:28 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#8 DisplayFusion I'm still interested on where the documentation is for the mirroring. For example, what do all these options mean (see attached) ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#7 Wed, 16 Dec 2020 20:59:30 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#7 DisplayFusion I tried it, but the screen goes mostly black with a lot of red lines. Kind of hard to explain :-)

For a second, it flashes what I think I'm supposed to see, but I think there's some sort of scaling issue. ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#6 Tue, 15 Dec 2020 16:41:43 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#6 DisplayFusion Hi Peter,

The steps that Keith outlined above should work for you, have you tried them out?

Thanks! ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#5 Mon, 14 Dec 2020 18:48:20 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#5 DisplayFusion I cannot find information about the Mirroring capability. Where is this documented? How do I enable it? I have the same use case -- to share a portion of my ultra-wide monitor on Teams ]]> RE: Split monitor sharing screen https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#4 Fri, 10 Jan 2020 20:10:35 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/split-monitor-sharing-screen/?ID=029e7796-bcd4-484d-b825-9bee16154bbd#4 DisplayFusion If you like, you can set the "Mirror Polling Interval (ms)" setting in the Advanced Settings to something lower to speed it up. You can set it as low as 1, but note that the lower the value, the more CPU it will use.

Thanks! ]]>