 If you want to share the contents of one Mac screen with another maybe for the purpose of tutorial style videos Or maybe to take the contents of that screen into I don't know a discord voice channel or maybe a zoom call or something like that There are a number of different ways that you can do that But there are just three that I use all of the time and so I'm going to cover those Specific three in this video and I'm going to share these sort of pros and cons of each one and the different use cases That they all have so let's start first though with the built-in screen sharing that we've got in the Mac And you can find this in the system preferences and specifically down here in the sharing options And you want to be doing this by the way on let's call it the secondary Mac So that's the one that you're going to share the contents of Into the primary Mac, which is the one that you're working on maybe creating your video or whatever it happens to be So on the secondary Mac just make sure that you do have this screen sharing checked It might not be checked as a default but here also you may want to look at all these other different sharing options So you can share files media printers and things like that that connect to those devices as well or those computers And basically share it between Macs that are connected to the same network Assuming though that you have got screen sharing switched on then if you come over into the finder Then have a look in your network section as you can find this from the the menu in the finder You want to go to the go menu and then you'll find network in there But in any case once you've done that you'll see that there are different computers attached And then just click on the one that you want and you'll see if you've got screen sharing enabled It will show you a screen share as an option just there if you're in a different view type It might show up somewhere else. So let's go and have a look at list for you Yep, it's just up there at the top But anyway, it should be there somewhere so click on screen share and what that's going to do is that's actually going to open up An entirely new window Which is if in effect a window onto that specific desktop, so let me just come in here type in my password There we go. So I'm going to just go into demo mode. You'll have to excuse this looking rather small at the moment Let's just get rid of the finder and the system preferences So now what you can see is up in the top left of the screen. This is my just in Ecamp running on my primary machine It's what I'm using to record this video, but you can see here We've got this window Which is a window into the desktop of that secondary computer and one of the great things about using this method For screen sharing is it's not just sharing the screen But you also have the option up here for either just watching basically observing the screen or you can have control mode When you are in control mode, you've literally just then I can just click into this window And you can see how now I can go and view all of these different menus and things like that So this is all basically just a full control of this computer from my primary computer So I find this really useful for when I'm doing screen demos So for example, if I was to bring up my Ecamp live window, I've just hidden it down here So this is Ecamp live running on my secondary computer So when I did my demos of the Ecamp live beta recently This is how I was doing it because I needed to record using Ecamp But I also wanted to show what Ecamp was looking like when it was neither recording or streaming So this is how I did it. I set up a scene which was basically Just a scene as you're seeing there So the top one that you're looking at is Ecamp on the primary computer Hoping this all makes sense, it should do And I've actually just got a camera overlay just popped in there Over this little blank area of the desktop from the the the window that I'm sharing And of course, hopefully it should be quite obvious All I'm doing there is if I just come into a little blank scene here All I did was I created an overlay and then I shared my window For some reason when I'm zoomed in it doesn't show the little window properly There we go. I selected here screen sharing So now it's just basically sharing that window and then I can crop in To the edge of that screen share window and then I can just drag this up So now that's basically giving me a view It's actually what it's actually giving me of it What it's actually giving me is it's giving me a view of this screen sharing window Which in turn is giving me a view of what is on my desktop And in fact, I just made that completely full screen for the purposes of this one I've also done it slightly different as well before Where I wanted to show something that was on a different computer And so I did it like this so it's a bit more obvious And there I've just got a bit basically a picture of a laptop And I've just literally positioned the screen is locked The overlays locked one second You can see I've just basically positioned that where it needed to be in the in the scene So as I say, that's great for doing demos where you want to be able to show All of the interface show everything that's going on If I come out of demo mode, you can see how that really makes it seem like I'm showing exactly what's going on on that second computer One of the drawbacks of this particular method though If I come back into my live demo mode Is that you do have to have this open on the screen I like that because I actually don't have my laptop open My laptop's just on a shelf actually plugged in And then whenever I need to use it, I just fire up the screen sharing And then it's ready to go I don't need to have it open on the desk or anything like that Taking up any space So for me, that works well because I do need to be able to still control it But if you don't want to take up this space And maybe you've actually got the laptop open in front of you You literally just want to share the desktop What you can do is you can use NDI on that laptop instead So let me just actually come and use this very scene that I've set up Come out of live demo mode What I'm going to do is just move eCamp out of the way for a moment And I'm going to search for NDI ScanConverter is the application Now it's just opened, it's opened up at the top here It doesn't actually show anything on the screen as such It's just open in the dock But here what you can do is from the capture menu that you've got at the top You can basically select what it is that you want to share So the default will be the desktop It's going to be transmitting the desktop Or you can choose any other app And in fact any window of any of those apps I've jumped ahead a little bit NDI is basically a method for transmitting video It's a video protocol for transmitting video over a network It's the simplest way to put it So basically whatever I select in NDI here NDI ScanConverter By and blank there That will be basically just being transmitted over the network So what does that actually mean though And how does that look in real terms Well if I come back into my demo mode here And I'm just going to zoom in on Ecamm for the moment Let me come back to this demo scene that I created I'm going to get rid of this one This is the way that we just did it before But now what I'm going to do is I'm going to add a camera overlay Now with a camera overlay What we can do is we can select the cameras And anything that you transmit over NDI will appear as a camera And all I'm going to do is if I just come into the settings That's not going to show up as well zoomed in It's a little bit weird how that is like that Let me just come into the settings So instead of being the camera If I come in here what you'll see is Now we've got the Alex MacBook Pro local and brackets ScanConverter So if I click on that That's now showing whatever we've got selected in ScanConverter So because we selected our desktop This is just another way of bringing the entire desktop Into Ecamm over NDI Now the actual aspect ratio of that laptop is not actually 16 by 9 So what I would need to do is Bear with me a second Just change this aspect ratio to be custom And then if I make that the right size There we go, that's the right size for that particular Mac And so there we go Now I'm basically bringing in the desktop of that second Mac over NDI And what that means is I could then in theory Just completely close this because we're not using it We're bringing the feed in over NDI Directly into that secondary Mac So as I say, if you've got that Mac open on your desk somewhere else And can control it somewhere else Then this is a great way to do that Because it doesn't clutter up your primary monitor There is another way though that we can do this So what I'll do is just come back into my screen sharing Because I will need to show you this And that is using Ecamm So let me just come back over into the scene So what I'm going to do now is I'm going to actually open Ecamm We'll bring Ecamm up here And the other way that we could do this is in Ecamm itself If we go to the output, it has NDI built in And what that does is it basically transmits Whatever you've got running it or the output you've got from Ecamm And it transmits that over NDI So all you need to do for that is go to output NDI output and make sure that it is switched on with one of these sizes So I've just gone with the maximum size there, 1080p And so assuming you've done that, it is as simple as that Then when you come into Ecamm, if I go back into that little test scene that we created And I'll go into live demo mode again Then if I click the little pencil Then instead of selecting the scan converter from here There is another camera option which is Alex MacBook Pro Local Ecamm Live And that is the NDI feed coming out of that MacBook Pro And if I just put the size back to 16x9 You can see hopefully that what is coming out of here If I just zoom in a little bit What is coming into this window at the top here Is actually just the feed from Ecamm on that secondary computer So if I toggle on an overlay You'll see how it appears on the secondary computer as well Or sorry, it appears on the primary from the secondary So basically whatever you've got coming out of Ecamm Or showing it in the Ecamm preview window Will appear then on that primary computer The reason why this is useful is If you want to share specific applications or things like that You may want to actually have them running on a second computer And then just set up scenes in Ecamm to show each of those Using the Ecamm's screen sharing in the second computer To share those different applications And then you can do the switching on there For when you want to bring it into your primary computer As a way to sort of offload some of that workload onto something else Or maybe you've as I said before had You want to bring this into Discord or something Maybe you've got your Discord running on a second computer Your live streaming from your primary computer But you want your computer feed Your live stream feed to also be going into Discord On that second computer You would just use the NDI on Ecamm On the primary one that was streaming And feed it into the Ecamm on the second one And have that going into Discord As a virtual camera or something like that So these are just the three different ways That I would do this Obviously there is a drawback with this latter one That you do have to then have Ecamm running On both computers which might not work out Entirely great for you You might not want to have that running But nevertheless it is just another option But I've found with these three different options Either the scan converter The built-in screen sharing Or just using Ecamm over NDI It really just covered me for all the different kinds Of tutorial style videos Or screen sharing or things like that That I need to do So I hope that has been useful But what I'll do is I'll leave a link to Some more of my Ecamm videos Over on the right hand side