Share iMac screens

I have 2013 iMac and an old 2008 iMac. i want to share screens, as if the 2008 iMac were an external monitor.
Pertinent data:
2008 imac
     3.06 GHz Intel core 2 duo
     4 GB 800 Mhz DDR 2 Dram
     NVIDIA GeForce 8800 GS 512MB
     OS X 10.9.3
2013 imac
     3.5 GHz Intel Core I7
     8GB 16 MHz DDR3
     NVIDIA GeForece GTX 780M
     OS X 10.9.4
Have tried to figure it out connecting cables and by using a home network but neither iMac sees each other
Is there a way to do this? One pal told me this can't be done because of video card incompatibilities. Would like to be able to drag and drop images and video from one screen to another. Hope some one out there has a solution.
Thanks

One way I know of is to make the 2008 iMac an AirPlay receiver using an app like this: http://www.airsquirrels.com/reflector/.
Go to AirPlay in the menu bar on the 2013 iMac and select your 2008 iMac. Then click the AirPlay icon in the menu bar a second time, and choose "Extend Desktop" for "Use AirPlay display to:"

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How to share my IMAC screen to my apple tv via local WIFI?

Hi
Can me some one to help configur my imac to share the screen to apple tv?
I have allready enabled the screenshare funktion in network settings
thx
gabara

you can't and never could
and even if you could then even if you could the bandwidth of wifi
would mean very few frames pr. second because of the high resolution of the imac

When I record anything or share my screen on my iMac it only shows my mouse. What am I doing wrong/how do I make it show the rest of the screen too?

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Hello Ian,
No idea really, but are there other computers locally that you can test regular Screen Sharing locally both ways?

How do i stream my iMac screen to a device that accepts component video only

I have a new iMac (2015) and I want to send my screen from my mac to a video switcher called a NewTek Tricaster 40. It only accepts component or composite video input. I want to send my iMac's screen to it in real time so I can incorporate it into my live video productions. I have attempted to use several HDMI to component converters and none have worked. I am using the Kanex Pro HDMI to Component Converter to convert the HDMI out from two HD camcorders to component and sending that into my Tricaster 40. It is seeing the signal just fine and giving me solid HD video. So I attempted to use the same Kanex Pro for the iMac. First I used apple's lightning to HDMI cable then plugged that HDMI into another Kanex Pro HDMI to component converter. No dice. I tried all the component video settings: 1080p 30PsF, 1080 24PsF, 1080i, 720p, 720/30p, 720/24p. None worked
Kanex Pro HDMI to Component Converter with Audio for PS4, Xbox One, Full HD 1080p (HDRGBRL)
https://www.google.com/shopping/product/13562420314864684603?q=Kanex+Pro+HDMI+to +Component+Converter+with+Audio+for+PS4,+Xbox+One,+Full+HD+1080p+(HDRGBRL)&espv= 2&biw=1461&bih=724&bav=on.2,or.r_cp.&bvm=bv.89947451,d.cGU&ion=1&tch=1&ech=1&psi =lcMhVcDPEpC4ogTBl4LABg.1428276117592.5&prds=paur:ClkAsKraX2IpeY7X336NKCAZO5gXZC fr9CYkefRrD0Ad_Xy607mRERaZVy-e31nis3rQppz_OgnNmy5ApOtsfxdiNa9ObBt6XIj0T_QHJnHgQS RKEgr403gF3BIZAFPVH73q3thgw88E5DYtSJ2ucji5lQO4ow&sa=X&ei=nMMhVfSkCIftoATK24GYCA& ved=0COEDEPMCMAA
Next I purchased an apple lightning to DVI adaptor. Then I plugged the DVI into this Lindy DVI to component converter. It also failed at all resolutions. None worked for SD resolutions either.
LINDY DVI-D to VGA/RGB/Component Video Converter (32562)
http://www.amazon.com/gp/offer-listing/B0012E210A/ref=olp_tab_new?ie=UTF8&condit ion=new
After hunting for a solution someone suggested that HDCP protection might be my problem. Apparently in an effort to keep people form pirating movies Microsoft and apple use HDCP to keep people form making this conversion? I'm nor sure how this works I just know that I am leagaly allowed to incorporate brief news clips into my news comentary on my youtub channel so long as I cite them and add to them substantially. I do both. So is HDCP my issue? If so what is the work around?
Sewell Direct 1x2 HDMI Splitter, v1.4, 4k by 2k support
http://www.amazon.com/gp/r.html?C=R9X3UEVFUTLF&K=AAASFVVZHH4WQ&R=3S6NDP88QPROY&T =C&U=http%3A%2F%2Fwww.amazon.com%2Fdp%2F…
NewTek has a program called IVGA that will allow me to share my screen over my local network but the frame rate is horribly choppy and is not useful for capturing video clips form youtube or game play.
Bottom line how do I stream high quality (720 /24p minimum) video from my iMac to a device that only accepts component video in.

I did end up using an apple thunderbolt to DVI.
Next a DVI to HDMI.
Component Video + Digital Coaxial and Digital Optical Audio to HDMI® Converter
http:/http://www.monoprice.com/Product?c_id=101&cp_id=10114&cs_id=1011406&p_id=5 971&seq=1&format=2
After that I used an HDMI to component.
Kanex Pro HDMI to Component Converter with Audio for PS4, Xbox One, Full HD 1080p (HDRGBRL)
https://www.google.com/shopping/product/13562420314864684603?q=Kanex+Pro+HDMI+to +Component+Converter+with+Audio+for+PS4,+Xbox+One,+Full+HD+1080p+(HDRGBRL)&espv = 2&biw=1461&bih=724&bav=on.2,or.r_cp.&bvm=bv.89947451,d.cGU&ion=1&tch=1&ech=1&ps i =lcMhVcDPEpC4ogTBl4LABg.1428276117592.5&prds=paur:ClkAsKraX2IpeY7X336NKCAZO5gXZ C fr9CYkefRrD0Ad_Xy607mRERaZVy-e31nis3rQppz_OgnNmy5ApOtsfxdiNa9ObBt6XIj0T_QHJnHgQ S RKEgr403gF3BIZAFPVH73q3thgw88E5DYtSJ2ucji5lQO4ow&sa=X&ei=nMMhVfSkCIftoATK24GYCA & ved=0COEDEPMCMAA
On my iMac:
I had to go into my device settings > Display
then I set the "Optimize for:" to "CAT-6066"
after that I selected the "Scaled" option right underneath
then i selected 1080i because the Kanex Pro is designed to convert 1080i into component
I was then able to get my NewTek Tricaster 40 to recognize that component signal from the Kanex Pro and add it to my production as 1080i or as 1080p/30. The frame rate looks great and the video quality is very smooth and in real time.

How do I get Share my Screen to work?

I'm trying to share my screen iMac to MacBook. Both on Mountain Lion. Under the VIDEO drop down Screen Sharing on both computers is checked off. In SYSTEM PREFERNCES > SHARING, Screen Sharing is on. Yet, I cannot share my screen, or share the screen of my friend via Messages.
ANY IDEAS HOW TO FIX???

HI,
The @me.com, the GoogleTalk and Bonjour accounts should all be able to do Screen Sharing in Messages.
The other end does have to be using either iChat or Messages as well.
It does need to be On at your end but does not have to have the System Preferences > Sharing option Enabled (Uses the same engine (Apple Remote Desktop) only)
It may pay to go to the General section of the Preferences for the App and Untick the line that gathers the 3 Buddy List in to one.
Then highlight each Buddy List in turn and then check the Video Menu > Screen Sharing again as it may be an issue with one account that is crossing over when they are linked.
The next reason could be your Internet Speed.
Messages "measures" this at the app start up
It can get "confused" as to the speed if you have it starting up at the same time as the Mac because of the things the OS does in starting up and creating the Internet connection.
Also check Messages Menu > Preferences > Video section > Bandwidth Limit.
This should not be set at the 200kbps (it is too close to the minimum of 128 needed for the Screen Sharing if your service varies)
Of course it could be your service is too slow.
9:10 PM Sunday; September 9, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

IMac Screen Failure

Hey,
I was just wondering if any of you are experiencing screen failures as noted in the link below? If so, is it the aluminum iMacs, or is it the white ones?
http://www.macnn.com/articles/07/11/30/imac.screen.failure/
Thanks!!

Hi autiger
Which iMac do you have and are you having any display issues?
I don't believe it can be jinxed, so I'll do a little bragging here. My 17" Early Core Duo w/Apple Care purchased Jan. 21 2006 is great and has no gradient light/dark, no dead pixels and only a very very small backlight bleed. The sRGB and Adobe RGB (1998) profiles were OK, but the display seamed a little washed out. After more than a few tries, and some good advice from Barbara B and others here I was able to set a new profile that is much richer than any of the factory supplied profiles.
All display manufactures and computer system will have there share of issues, some more that others. I have had more than a few Apple's over the last 20+ years without a single hardware problem. I do have to admit though, that with the all-in-one Intel I bought Apple Care for the first time ever???
Dennis

Can i share the screen of ibook running 9.2 classic?

I need to run Photoshop on System 9 iBook and would like to share the screen from my iMac running Mtn Lion. Is that possible?

Use a product such as ScreenRecycler over a network.
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Share my screen not available

Greetings all,
My Niece is at Auburn and I am trying to fix something on her computer but she is unable to share her screen with me. I am running OS-X 10.6.6 and iChat 5.0.3. She is on a MacBook running 10.5.8 and iChat 4.0.9. I can share my screen with her but not the other way. Her Share Screen is enabled. She is using an Airport. Her Dad was able to connect on an Intel iMac but not the Power PC. She mentioned he had to update iChat to 4.0.9 to get it to work which tells me he is on 10.5. Any suggestions?

Niece misunderstood the diff between Sys Pref and iChat Pref. Thanks anyway...

Screen sharing option no longer works after updating to iOS Maverik. I am using AIM and so is the other person who i am trying to share my screen with. .

I am using AIM and so is the other person who i am trying to share my screen with. I log into AIM with an @aol.com account. I can request to share my screen and share the other person's screen. The window will pop up on the other computer, but after clicking accept it will go back to saying that there is a request for screen share. What should I do to fix this?

HI,
To be clear, iOS = iPhone and iPad and some iPod Touches and the Operating System they use.
Mac OS X = the Operating System Mac computers use.
Regarding the AOL account, is this actually from AOL and have the Chat/Messaging option enabled ?
Or is it a Name registered with the AIM part of AIM ?
You can have AOL as your ISP and have an email and User ID from them.
This needs to have the ability to use the name as a Chat name enabled (or at least it used to)
AIM, which actually stands for AOL Instant Messaging has it's own registration site.
Nowadays you register for a AIM email (although activating it for mail is another additional step).
It used to be that the bit before the @aim.com bit was the user name you used in Chat applications that could use AIM.
Previous to the current system you could in fact register just a Screen Name with them.
Apple (and a few US based ISPs) also have agreements with AIM that their (Apple, etc.) emails are recognised as Valid AIM Screen Names.
This means those issued by Apple ending in @mac.com, @me.com issued from the iCloud registration and @icloud.com.
(You do have to keep your password to 16 characters or less.)
From what you are saying you seem to be sure that you can see each other as On Line in your respective AIM Buddy lists ?
In Messages in both Mountain Lion and Mavericks you do not have to display the Buddy lists
(See the Window Menu plus the General Section of the Preferences to separate them)
Are you also saying that in the Video menu the option to allow Screen Shares is Enabled ?
Is it done at both ends ?
In iChat you could offer to Share your Screen with a Buddy without the option being On (they could not ask to share yours or offer theirs). I have not tested this in Messages.
6:55 pm Sunday; November 3, 2013
 iMac 2.5Ghz 5i 2011 (Mavericks 10.9)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and an iPad

Small rectangle near top right of iMac screen goes blurred when encoding?

I posted this in the Compressor 4 forum and Russ H confirmed he experienced the same effect but didn't know why.
Here's the peculiarity and an explanation as to what is causing it would be appreciated.
A few weeks ago when I was encoding something in Compressor I suddenly noticed that part of my iMac screen had gone blurred.
I feared it might be about to pack in but further investigation showed that the perfectly rectangular blurred patch only occurred when using the Share Monitor.
Very strange indeed!
This red rectangle shows roughly the area affected.
Inside is blurred with a sharp demarcation to the normal screen.
When I quit Compressor and the Share Monitor the patch immediately becomes clear again.

I have done an investigation and pinned down the exact cause, though I do not know why.
It is caused by Share Monitor but only appears when when you click on the i (Show Info) button.
When you close the Show Info window, the area below it is blurred and remains so until you quit the Share Monitor.
Furthermore, a narrow band along the left side of the Share Monitor, stretching as far as the pointed bit of the window is also blurred.
If you click the screenshot to enlarge it, you will see that I have extended the red rectangle to the left and if you look carefully you will see that the "o" and "b" of "Job" are blurred.

Is anyone having issues with 27" imac screen calibrating?

I may have to post this on the imac forum, but figured i'd ask the photographers here using aperture. I've heard that calibrating the monitor on a new 27" imac is not very easy, or can't be done because of the lack of adjustments on the screen itself, and also that the imac screen can't produce neutral whites? Has anyone had any experience with this, or info they can share about this? Thanks!

I'm using a Spyder3Pro with the new iMac and haven't run into problems. I did bring down the brightness three notches before calibrating - that LED is very bright.
I know there were problems with the previous generation's glossy screens (too bright) but I've gone from the old matte version to this one and I'm loving it.

When trying to share my screen in iChat, the other person only sees green

When I try to share my screen with someone using iChat, the person sharing it with me cannot see anything on my screen. I've tried reinstalling Mac OS on my computer but it hasn't helped...what can I do?!

HI,
To be clear, iOS = iPhone and iPad and some iPod Touches and the Operating System they use.
Mac OS X = the Operating System Mac computers use.
Regarding the AOL account, is this actually from AOL and have the Chat/Messaging option enabled ?
Or is it a Name registered with the AIM part of AIM ?
You can have AOL as your ISP and have an email and User ID from them.
This needs to have the ability to use the name as a Chat name enabled (or at least it used to)
AIM, which actually stands for AOL Instant Messaging has it's own registration site.
Nowadays you register for a AIM email (although activating it for mail is another additional step).
It used to be that the bit before the @aim.com bit was the user name you used in Chat applications that could use AIM.
Previous to the current system you could in fact register just a Screen Name with them.
Apple (and a few US based ISPs) also have agreements with AIM that their (Apple, etc.) emails are recognised as Valid AIM Screen Names.
This means those issued by Apple ending in @mac.com, @me.com issued from the iCloud registration and @icloud.com.
(You do have to keep your password to 16 characters or less.)
From what you are saying you seem to be sure that you can see each other as On Line in your respective AIM Buddy lists ?
In Messages in both Mountain Lion and Mavericks you do not have to display the Buddy lists
(See the Window Menu plus the General Section of the Preferences to separate them)
Are you also saying that in the Video menu the option to allow Screen Shares is Enabled ?
Is it done at both ends ?
In iChat you could offer to Share your Screen with a Buddy without the option being On (they could not ask to share yours or offer theirs). I have not tested this in Messages.
6:55 pm Sunday; November 3, 2013
 iMac 2.5Ghz 5i 2011 (Mavericks 10.9)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and an iPad

Weird Problem - can only see Mac in "Share my Screen"

I've been having a strange problem that I think might have something to do with OpenGL, but I'm not sure. I think it might be because I've gotten some error messages that said that OpenGL wasn't available or working properly.
When I boot my mac, I have a hugely corrupted screen (gray with green stripes) which doesn't change at all. However, I can hear things starting up, and when I use "Share my Screen" from my MacBook, I can see everything, and the computer runs just fine.
I've tried attaching a different monitor; it looks exactly the same, and both monitors run perfectly when attached to other computers.
I tried taking out all the cards and things, wiping everything down, and putting them back. No change.
I tried booting in Safe Mode. It never actually booted. (I left it to try for about 20 hours before I gave up.)
I've tried resetting the PRAM, and that didn't help. (Before that, I had scattered green dots, and a fractured apple logo, with the widget that showed the computer was loading, until the point where the screen should turn blue, when it would freeze. Now I just have green stripes.)
I've tried to reinstall the original system, but when I attempt to boot from the CD, I get a kernal panic. This is true, no matter what CD I attempt to boot from.
I've opened the computer as a Firewire Drive (using an older Macbook) to change the system from there; but you can only install the stystem on the boot drive from the disks I have. While I was running it like this, the Firewire icon showed up just fine on my monitor, white on the gray with green stripes.
I've tried upgrading to Lion (I was using Snow Leopard) and was able to do it, but that didn't solve anything.
I don't appear to have the Lion reboot partition. At least, if I do, I don't know how to find it. The keyboard shortcuts don't do anything as far as I can tell. Since I cannot actually see anything on the screen until the comptuer is fully booted, so it might be there, but invisible.
Unfortunately, I didn't try the old install disks until after the Lion upgrade. Now, if I try to just install from the disk (using Share my Screen, so I can see what I'm doing) I'm told that I can't.
When I run Disk Utility, it says everything is fine.
The computer is due to be replaced in October anyway. Should I just give up and get the new one now? Or can any of you think of anything else that I might be able to try? Everything is totally backed up, so if I need to wipe my disks, that's not a problem.
The computer is a
     Mac Pro
     2 x 3 GHz Quad-Core Intel Xeon processor
     4 GB 800 MHz DDR2 FB-DIMM memory
     NVIDIA GeForce 8800 GT 512MB Graphics card
     OS 10.7.4
Thanks for any help you can give me. I'm at my wits end!
Robin

Hi Robin,
The no boot in Safe Mode is a big clue, generally a serious Hard Drive problem, but can be others.
Are you saying the blotched screen showed up fine in Screen Sharing? If so the problem is downwind of the Video Card/VRAM, & you seem to have eliminated the Cable & Monitor, so I'd quess Logic Board most likely.
On the HDD problem, try Zeroing the drive while it's in Target Mode...
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
   2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
      *Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
   3. Click the Erase tab.
   4. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
   5. Select that iMac volume.
   6. Highlight the drive, select Partition Tab, then Format type... MacOS Extended Journalled, select the Security Options button, choose Zero Out Data one pass, Erase... after completion do a new install... after completion hopefully you'll be able to get a good install.

Since me and my mother moved from iChat to iMessage bêta, screen sharing works only one way. I can share my screen with her but not the reverse. When actually what I would like to do is share her screen. Video works fine both ways.

Screensharing works only one way since we moved from iChat to iMessage bêta. Before that we have never had any problem with screen sharing. We haven't changed anything else, just installed iMessage. What I need to do is share her screen, and the only thing I can do is share my screen...
Thanks for your help.

HI,
On the whole I am finding it very stable. (it presents the same quirks in the same manner each time)
It has some things that are more Feature requests than "Bugs" per se about the way it works that I would like to change.
It can also be difficult to tell exactly what is going on whenyou are hearing about it third hand.
Sounds like you have a plan.
8:35 PM Tuesday; March 20, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Lion 10.7.3)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Mac messages share my screen

Mac Messages Share my Screen quit working some time ago. The internet said there is a problem recognizing AIM accounts. Yet when I try to add another account AOL is an option. Is there a webpage that provides a solution?

Hi,
AIM stands for Aol Instant Messenger.
It is only recently though that Apple have changed the Add account pane to read AOL when adding an account that works with the AIM service.
In Messages check the Video menu (Where Screen Sharing is) and select the Connection Doctor item.
In the panel that opens check the drop down for the Capabilities info
You need the Internet Speed to be able to Video to be able to Screen Share.
In Messages > Preferences > Video section you may have set the Bandwidth limit too low.
If it is set to 100kbps it will not work (you may not be able to Video either)
The 500kbps setting will get you above the amount needed to Host a 4 way Video chat which will be enough for Screen Sharing as well.
If the computer is doing something On line when you start the Messages app this will distort the speed available and it may not store the right info about your capabilities.
For example starting the app at the same time as the computer may mean the computer does not have a internet connection at the time the app finishes getting read. Or starting the app when another app or the computer is doing a download will also effect things.
However a long term issue is more likely to be the settings in the pic above.
10:14 pm Thursday; August 21, 2014
 iMac 2.5Ghz i5 2011 (Mavericks 10.9)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and an iPad

Share iMac screens

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