WEBVTT 00:00.300 --> 00:04.310 Welcome to blender camera tracking markers. 00:04.320 --> 00:07.640 So we're going to be talking about tracking markers. 00:07.980 --> 00:08.580 What are they. 00:08.580 --> 00:11.890 Well markers track parts of the footage. 00:11.910 --> 00:18.030 And they can automatically do that as the footage progresses but we do need to make sure they're in 00:18.030 --> 00:23.220 an appropriate place and they have the right settings applied to them. 00:23.220 --> 00:29.250 You will see that markers use similar controls to the 3D editors so we can literally use the G key to 00:29.250 --> 00:32.040 grab them and move them about if we wanted to. 00:32.400 --> 00:38.590 Now you will need a minimum of eight in the scene to effectively track a camera. 00:38.880 --> 00:41.670 Obviously the more you have the better. 00:42.000 --> 00:44.820 We'll have a look at pattern size and search size. 00:44.820 --> 00:47.460 These are two parameters that a tracker can have. 00:47.580 --> 00:53.940 Discovering what they can do and I would recommend placing markers manually there's a nice button that 00:53.940 --> 00:55.270 says Do it for me. 00:55.440 --> 01:02.160 And to be quite honest it doesn't work or doesn't work very well in most scenes or not at all. 01:02.220 --> 01:04.850 So just do it manually save yourself the headache. 01:05.130 --> 01:08.820 Let's go play with markers now and hop on over into blender. 01:09.150 --> 01:13.950 Okay so there were a couple of things that we have to go over just before we start adding markers to 01:13.950 --> 01:14.710 our scene. 01:14.940 --> 01:22.150 First of all we can change our laying out here and move it across to the motion tracking layouts. 01:22.170 --> 01:27.360 Now when we switch across to that we get a series of view ports which some of which look familiar some 01:27.360 --> 01:28.740 of which are new to us. 01:28.770 --> 01:32.890 And we've got three new ones which are all the same. 01:33.010 --> 01:35.170 The movie clip editor. 01:35.960 --> 01:41.020 Now in order to make this sane for me I'm just going to tidy this up. 01:41.120 --> 01:44.230 Otherwise I will go a bit mad. 01:44.350 --> 01:48.210 And I certainly don't need them all open to demonstrate what's going on. 01:48.230 --> 01:54.890 The first thing I need to do once I've got a sane layout and indeed if you guys have more than one monitor 01:55.250 --> 01:59.390 do take advantage of the fact you can spread your work out. 01:59.510 --> 02:02.800 It'll save you a lot of time. 02:02.810 --> 02:07.430 First things we need to do is actually bring in the footage that we've already got and unfortunately 02:07.430 --> 02:13.330 there's no link between the video sequence editor and the movie clip editor. 02:13.700 --> 02:16.400 Annoying yes unfortunately. 02:16.580 --> 02:19.890 So what you're going to have to do any of you haven't done it yet. 02:20.030 --> 02:20.920 That's fine. 02:20.930 --> 02:27.950 You need to export the video you've just made within blender you need to export that out as an MP 4 02:28.340 --> 02:32.800 or something like that so you can bring it back in and open it up here. 02:33.050 --> 02:38.770 If you have any other editing software you can use that as well so don't feel you need to use Blender 02:38.780 --> 02:41.240 if you've got another bit of software for instance on a Mac. 02:41.240 --> 02:46.150 Quick Time works really well you can trim your videos very very quickly. 02:46.280 --> 02:52.790 And for those following exactly long will need to have to go and open using the open on the movie clip 02:52.950 --> 02:53.690 editor. 02:53.990 --> 03:01.400 And let's go to VFX drone footage for cake cuts that will be available for you in the section assets 03:01.430 --> 03:02.080 as well. 03:02.120 --> 03:07.320 And I've got my eight seconds of air field excellence and now that's loaded up. 03:07.460 --> 03:15.260 There's a few extra bits to show around the screen so we've got a tall shelf on the left a propertys 03:15.290 --> 03:20.510 panel on the right would be hopping between those with the markers and we've also got this blue bar 03:20.510 --> 03:22.080 along the bottom. 03:22.160 --> 03:25.760 This blue bar is the caching that we've already set. 03:25.760 --> 03:32.840 If you remember we've got in the System Preferences sorry in the user preferences under System make 03:32.840 --> 03:33.500 more sense. 03:33.680 --> 03:39.470 We changed the sequencer and clip editor and I set mine to 8 gigabytes because that's what I felt comfortable 03:39.770 --> 03:41.910 devoting to this process. 03:41.960 --> 03:48.310 We're working with a for K bit of footage here so this might be quite a bit to memory. 03:48.320 --> 03:55.470 The first thing I'm going to do is go ahead and hit play on the timeline and nothing happens. 03:55.640 --> 04:02.280 But when we stop playing back it but we stopped it from 50 it suddenly jumps to that frame. 04:02.300 --> 04:06.860 Little bit annoying that that does not control what we're seeing up here. 04:07.190 --> 04:13.970 However what we can do is whilst the cursor is hovered over the video clip we can actually go altes 04:14.000 --> 04:16.610 and a and just start it playing. 04:16.610 --> 04:18.840 Now this is going to be a much lower frame right. 04:18.860 --> 04:22.990 Whilst its caching and on the info head is right at the very top. 04:23.090 --> 04:25.810 If I just scroll this header along you might not have to do that. 04:25.820 --> 04:27.520 Oh my word. 04:28.010 --> 04:30.140 We are at four and a half gig's already. 04:30.140 --> 04:36.170 Let's let this go through the entire thing and we notice here on the movie clip ed that blue bar along 04:36.170 --> 04:42.290 the bottom is becoming a different colour blue and now it's entirely cash and how much memory are we 04:42.290 --> 04:42.870 using. 04:42.890 --> 04:44.610 Seven and a half gigabytes. 04:44.610 --> 04:46.560 Wow okay that's a lot. 04:46.580 --> 04:53.960 So just bear in mind when you're working with high resolution footage you can actually end up filling 04:53.990 --> 04:55.980 your RAM very quickly. 04:56.330 --> 04:59.390 So we've cache the actual clip itself. 04:59.480 --> 05:01.740 We're ready to go with adding markers. 05:01.970 --> 05:08.030 The first thing I would do before even thinking about placing a marker on here is just the scrub backwards 05:08.030 --> 05:12.860 and forwards for you through the footage which now we can do because it's cached it would be nice and 05:12.860 --> 05:18.920 smooth by just clicking on the time line and dragging across or indeed the graph editor which is part 05:18.920 --> 05:25.820 of the movie clip editor at the top as well we can do it in two places that we've currently got open. 05:26.060 --> 05:32.090 Now I'm actually going to get rid of my properties panel as well to give me even more space on the left 05:32.090 --> 05:33.470 hand side on the tool shelf. 05:33.470 --> 05:38.080 There's a section for marker and we can add the marker. 05:38.090 --> 05:45.950 We simply click the add button and then place it where we want on the screen and that is very very small. 05:45.950 --> 05:52.820 So what I advise before doing it placing a marker like the one I have just placed here and I'm just 05:52.820 --> 06:00.320 using the middle mouse buttons zoom in and to scroll as in scroll wheel up and down and if I press and 06:00.320 --> 06:04.060 hold the middle mouse button I can pan around the scene as well. 06:04.580 --> 06:06.720 So I'm zoomed in to my marker now. 06:06.740 --> 06:12.570 Ideally we want to place a marker in a high contrast area like where it's white here. 06:12.590 --> 06:19.670 Now I can move this marker that we've just placed with the G key and when I move it around I can just 06:19.670 --> 06:21.520 move it like anything else. 06:21.590 --> 06:25.300 We've moved before now over on the properties panel. 06:25.310 --> 06:31.520 If the tracks not open open up the track and you can do fine adjustments over there as well. 06:31.550 --> 06:35.400 And when we start tracking our footage this is a good place to look to see how. 06:35.510 --> 06:43.960 It's moving so we've got a marker placed and we've got some settings over here under tracking settings. 06:44.020 --> 06:50.150 I tend to leave these types of tracking settings as default for the moment. 06:50.470 --> 06:55.080 Now the pattern size is the area that blender is analyzing from frame to frame. 06:55.180 --> 07:01.900 And if that's too large it just slows blended down significantly so it is important to kind of have 07:01.900 --> 07:08.310 a balance between pattern size and speed of which you want to do the recognition. 07:08.470 --> 07:14.830 So size is how far blend all look from the original pattern to find the pattern again. 07:14.830 --> 07:20.170 Now if you've got some footage that pans or moves quickly you may have to have a large serve size. 07:20.170 --> 07:27.940 Now I don't tend to set mine over here so aggressively I tend to change over in the properties panel 07:28.360 --> 07:33.060 and it will vary from footage to footage as to what you need do now there. 07:33.210 --> 07:38.440 I will expand the tool shelf here and will just carry on to the motion model that can be incredibly 07:38.440 --> 07:45.130 important and will dictate how well blender manages to track the scene and the moment it's just set 07:45.130 --> 07:46.940 to location. 07:46.990 --> 07:54.510 We've also got location and rotation location and scale take slope location rotation and scale. 07:55.440 --> 08:01.520 A fin an hour fine and perspective these are all different ways of. 08:02.270 --> 08:07.910 Blender interpreting the transformation of anything that we're tracking. 08:08.030 --> 08:13.400 I'm going to leave it sets a location at the moment and then I'll look at the image on the right and 08:13.460 --> 08:17.390 as it's starting to track it I'll ball work out well is it rotating. 08:17.390 --> 08:23.990 Is it zooming in or zooming out things closer to this camera going to be changing more rapidly than 08:23.990 --> 08:25.460 something further away. 08:25.460 --> 08:32.270 In fact something further away its location just might change rather than its apparent size and matching 08:32.540 --> 08:37.510 key frame matching or whether you pick the previous frame. 08:37.520 --> 08:40.130 Now key frames you have not assigned any key frames. 08:40.130 --> 08:45.530 This is where we had placed this marker at certain points and then it would link between those key frames 08:45.790 --> 08:48.880 or previous frame just looks at where it was before. 08:48.920 --> 08:55.090 In general I've found previous frame a great starting point because just looks at what happened before 08:55.700 --> 09:01.470 because we've placed a marker here and it's the selected marker it is highlighted. 09:01.510 --> 09:07.070 If we hold down control we can also add additional markers and you can see that only one of them at 09:07.070 --> 09:12.530 a time times highlighted but we can select them all with the a key. 09:12.530 --> 09:18.110 Now when we've got them sat all selected and I've just dotted these round at random we can scroll down 09:18.110 --> 09:20.340 a little further and start a track. 09:20.570 --> 09:23.330 Let's start track now and see what happens. 09:23.660 --> 09:25.490 Okay what happened there. 09:25.610 --> 09:27.500 It seemed to stop very quickly. 09:27.560 --> 09:29.450 We're looking at what's happened. 09:29.450 --> 09:33.920 We started this on frain 200 on AIDS and it just went to the end. 09:33.920 --> 09:37.810 We played forward from frain two hundred and eight and it successfully got. 09:37.820 --> 09:39.810 As I said all the way to the end. 09:39.890 --> 09:46.980 We can also play backwards so if we go to frame 209 and pless track selects markers this time backwards 09:47.120 --> 09:49.590 or we can use as you can see there a short cut. 09:49.640 --> 09:50.850 Shift control. 09:50.850 --> 09:51.570 A.. 09:52.890 --> 10:00.270 And it's managed to track quite a way I am actually surprised but we seem to have lost two of the trackers 10:00.300 --> 10:01.370 at some point. 10:01.410 --> 10:05.980 Now I can tell that we've lost two of the trapper's because I can only see two of them highlighted. 10:06.090 --> 10:08.950 Oh no we've lost three because there were five of them in total. 10:09.120 --> 10:12.330 But these ones seemed to have held on the entire time. 10:12.330 --> 10:20.400 If we select individual ones we can see at this point in time frame one of these two have tracking points. 10:20.430 --> 10:21.530 And these ones are lost. 10:21.540 --> 10:28.210 They literally turn pink when they're lost and we can see in the preview they're also pink. 10:28.210 --> 10:32.550 Now I'm going to select those three that we've got there because they were just random. 10:32.550 --> 10:34.920 I'm going to hit the x key to delete them. 10:34.920 --> 10:39.650 You can also delete any selected ones over in the tool shelf as well. 10:40.260 --> 10:48.540 Now if we go ahead and let's have a closer look at this one here and as we're tracking it seems like 10:48.630 --> 10:52.890 that has done and had an actual What a wonderful job in tracking. 10:52.890 --> 11:00.870 We take a look at the preview box on the properties panel we can see that that's working really really 11:00.870 --> 11:01.460 well. 11:01.470 --> 11:06.540 Incidentally when you zoomed in on a scene you want to visually see this. 11:06.600 --> 11:09.930 It can disappear and that can be really annoying. 11:09.930 --> 11:16.090 So what we can do is on the properties panel if we scroll down and have a look at. 11:16.170 --> 11:16.820 Let's just. 11:16.930 --> 11:17.180 Yeah. 11:17.190 --> 11:21.090 Here we go under display lock to selection. 11:21.090 --> 11:27.960 That means as we move this backwards and forwards the actual footage itself moves around rather than 11:28.170 --> 11:32.950 our marker which can be very handy when trying to see if it's jumping all over the place. 11:32.970 --> 11:33.750 Now that one there. 11:33.760 --> 11:42.720 I'm really surprised with that it's managed to catch her he work in that way now notably here blue is 11:42.720 --> 11:43.560 going forward. 11:43.560 --> 11:50.610 And red is looking backwards depending on where you're going we can step through with the timeline to 11:50.640 --> 11:57.290 each individual one and the next frame that's being tracked is the next blue marker. 11:57.630 --> 12:01.800 Okay so we've got two in there and they've actually worked out relatively well. 12:01.800 --> 12:06.090 I'm really surprised that that small area of their works as well is it had. 12:06.210 --> 12:11.670 But what we haven't done is customized any of the search selection which can be really handy. 12:11.670 --> 12:13.130 So let's focus in on this. 12:13.130 --> 12:14.430 Bush down here. 12:14.430 --> 12:17.160 I'm going to use control and click to focus on it. 12:17.220 --> 12:24.120 Now I can't see the search area it's not visualized unless I go to Mark a display on the properties 12:24.120 --> 12:30.190 panel and put a tick in the search box and this is the area of which is going to be searched. 12:30.980 --> 12:33.920 We can change these area types. 12:33.920 --> 12:38.960 Not only do they have a square at the moment but we can make them rectangular or even change the shape 12:38.960 --> 12:39.710 completely. 12:39.710 --> 12:45.340 I'm going to go to Mark Karr and the marker is enabled it's got a position on the screen itself. 12:45.440 --> 12:52.370 And here we have the pattern width and height and we have the search area width and height. 12:52.370 --> 13:00.260 Now this footage pans to the left and right a lot so increasing the width of a search area is a great 13:00.260 --> 13:00.590 start. 13:00.590 --> 13:02.830 Now again I'm on frame 30 here. 13:02.960 --> 13:04.910 Now here's a great time saving tip for you. 13:04.910 --> 13:11.400 I would recommend only placing one marker at a time and then working through your footage. 13:11.450 --> 13:18.380 It's very easy to just put several markers down hit play and then you can get quite messy to try and 13:18.380 --> 13:20.510 figure out what was going on. 13:20.570 --> 13:25.970 Also when you put down more than one mark of is a good chance that you'll move the time line and look 13:25.970 --> 13:29.090 the markers no longer over that Bush. 13:29.240 --> 13:34.880 So the market doesn't move until it's started to track now because I'm at frame 30 that may cause me 13:34.880 --> 13:36.030 a slight issue. 13:36.050 --> 13:42.080 I'm going to use the scale Kaybee esky just to scale up so that the whole Bush is in that pattern area 13:42.080 --> 13:45.520 and I'm going to move move with the G key. 13:45.530 --> 13:51.210 It's about or indeed I can grab it over here move it about as well be properties panel. 13:51.380 --> 13:52.620 So I'm happy with that there. 13:52.670 --> 13:57.690 And initially I'm going to play back some are going to go to track and play back. 13:58.880 --> 14:04.910 And I'm hoping when we play forward nearly reached the end or fail and it reach the end perfectly and 14:04.910 --> 14:08.150 we can see to reflect that we've got a yellow line along the bottom. 14:08.150 --> 14:13.070 Now occasionally you would do something and it would lose track and I'm I'm trying to find something 14:13.070 --> 14:13.700 that's losing track. 14:13.700 --> 14:18.510 This is going surprisingly well let's place one here and just play that backwards. 14:18.530 --> 14:19.530 In this case. 14:19.730 --> 14:20.180 Excellent. 14:20.180 --> 14:21.350 It's lost track. 14:21.350 --> 14:29.060 Now if this happens you may have to zoom in hit the G key and replace and try again and go backwards 14:29.060 --> 14:29.810 from there. 14:29.810 --> 14:34.010 Now what's happening here is because the camera's moving quite rapidly. 14:34.040 --> 14:37.560 The search area is not large enough so I'm going to move that once more. 14:37.640 --> 14:44.510 But this time on the properties panel go down and increase the width of the search area and then play. 14:44.610 --> 14:49.530 And there we go it's tracking much much better in fact it managed to do the entire rest of the clip. 14:49.820 --> 14:54.570 So that is a great way of testing whether the search is going to make a difference. 14:54.600 --> 14:59.240 Now you have to be careful when you've got lots of things that look very similar if you set the search 14:59.510 --> 15:06.440 bound to large it will hop about something crazy try and to track all of these little objects here in 15:06.440 --> 15:07.800 a pass test. 15:07.820 --> 15:13.580 I was trying to track these white objects and they would try and bounce between them if I wasn't careful 15:13.580 --> 15:15.070 with my placement. 15:15.110 --> 15:16.720 So that looks really good. 15:16.730 --> 15:20.960 I'm happy with these few tracks we've got so far. 15:21.200 --> 15:23.810 And it's time for a challenge. 15:23.870 --> 15:30.100 I'd like you to go ahead and add more markers so add more markers into your footage. 15:30.170 --> 15:36.140 Track them through your footage as well so you should see those red and blue lines backwards and forwards 15:36.380 --> 15:42.110 and try and make sure they track throughout the entire however many frames you've got. 15:42.140 --> 15:46.760 I would aim for at least 10 to be in the scene at all times. 15:47.090 --> 15:52.410 And just a hint here it's better to have a fewer accurate markers. 15:52.550 --> 15:59.000 The many in accurate ones and we can go and refine those later on depending on how much refining they 15:59.000 --> 16:00.380 need done to them. 16:00.380 --> 16:03.430 So go ahead now pause a video and give that a go. 16:05.140 --> 16:06.360 Okay guys welcome back. 16:06.460 --> 16:09.940 Let's go ahead and add some more markers to our footage. 16:10.090 --> 16:15.370 Right so I'm going to zoom out for a moment and I'm not going to bore you with adding loads of markers 16:15.370 --> 16:21.220 to the footage but what I want to get a grips on is this is the starting frame and if I wants to track 16:21.220 --> 16:24.490 something it can't be off of this frame. 16:24.520 --> 16:30.210 At the beginning and it can't be off at the end as well as things move about. 16:30.250 --> 16:35.720 So that is important to remember as we're going backwards and forwards. 16:36.630 --> 16:37.240 Excellent. 16:37.230 --> 16:37.970 So that's a great start. 16:37.970 --> 16:39.430 All that kink at the end. 16:39.440 --> 16:42.050 I don't like fat so I'm going to. 16:42.170 --> 16:48.200 Well withdrawn going to actually pull down my frame count to 230. 16:48.200 --> 16:50.950 So we're going to end there and then we scoot back to here. 16:50.960 --> 16:59.450 Now one of the things with tracking that marker there does is it does kind of skew the video just a 16:59.450 --> 16:59.840 little. 16:59.840 --> 17:06.320 And I don't like fat for the moment so I'm going to turn off lock to selection and then it's not bending 17:06.320 --> 17:07.460 the video too much. 17:07.460 --> 17:10.850 Is it going to help with tracking quite significantly. 17:10.880 --> 17:15.640 So there's parts of this that are in the frame all the time and there are parts that are not. 17:15.650 --> 17:18.620 Now I'm going to pick probably a couple of bushes in the foreground. 17:18.620 --> 17:21.600 How long does this one stay in. 17:21.620 --> 17:26.600 So zoom in to where I'm talking about because there are lots of bushes so we've got one here. 17:26.600 --> 17:30.680 Have you got one on the corner there are dark one here that we can track. 17:30.680 --> 17:35.660 Ideally we want it spread off from the foreground all the way into the background as well. 17:35.780 --> 17:42.200 And in the background because we're working with four K or I am I can pick out things in the field like 17:42.240 --> 17:49.700 of this Bush here or whatever that lump is and some other places in the field that I can use as tracking 17:49.700 --> 17:50.150 markers. 17:50.150 --> 17:54.470 Unfortunately I have not been able to place markers on this scene and I don't think I would have been 17:54.470 --> 17:56.750 able to see them any way if I did. 17:56.750 --> 17:59.250 So there's a dark patch here there's shadows. 17:59.360 --> 18:02.180 All of these things can be used to track. 18:02.210 --> 18:06.930 In fact you could select the entire Bush and track it all there's a white mark on the field. 18:06.950 --> 18:13.430 So let's start adding markers and seeing where we get so I've added this again at frame blooming thirty 18:13.430 --> 18:14.040 five. 18:14.060 --> 18:14.840 That's no good. 18:14.840 --> 18:20.660 So let's go to that frame one and move it to an appropriate location. 18:20.660 --> 18:27.650 I'm going to use the propertys panel here to help guide me and zoom out ever so slightly. 18:27.830 --> 18:30.240 So you got a larger tracking area. 18:30.860 --> 18:36.280 Now I need to decide where I'm going to place it on this on this marker and I'm going to place it just 18:36.290 --> 18:39.730 there and then run forward and see if we've got enough. 18:39.920 --> 18:46.130 That seems to track it the entire way through and I can scrub and see how well it tracked it and that's 18:46.130 --> 18:49.680 done a poor thing that's done a pretty good job. 18:49.790 --> 18:53.530 I won't know of course until we come to solving it later on. 18:53.540 --> 18:55.580 But that's not in this challenge. 18:55.610 --> 19:00.080 Now I'm going to bore you with placing the other ones but I will see you back in a few moments after 19:00.080 --> 19:02.310 I've placed a few more on my scene. 19:03.480 --> 19:06.180 Therefore this would be a great time to jump back in. 19:06.180 --> 19:09.410 I've got one of these one that's going to be a little problematic. 19:09.450 --> 19:14.110 Now when you come across something problematic it's worthwhile considering whether or not to keep it. 19:14.130 --> 19:20.240 So here I am tracking this point and then all of a sudden it jumps to hear out what I can do here's 19:20.270 --> 19:27.960 just move it back to the right location giving it a new point and then rolling forward again and seeing 19:27.960 --> 19:33.900 if it follows throughout the entire scene following following following following following. 19:33.900 --> 19:35.590 Perfect okay. 19:35.610 --> 19:40.620 Just a couple more to do as you can see youngen to select them all here so you can see various size 19:40.620 --> 19:41.860 search boxes. 19:41.940 --> 19:46.930 And this is coming on nicely it's spread across the entire scene as well. 19:47.070 --> 19:52.740 And it does shift forward so as we go forward probably the last thing at the bottom here we've got a 19:52.740 --> 20:00.340 corner of the field and we've also sort of got this corner here that's in the seen that shadow. 20:00.450 --> 20:06.930 That dark patch that might be in there all the time this particular tree here doesn't have a shadow 20:06.930 --> 20:10.950 on it at the beginning because of the way the camera is moving forward. 20:11.060 --> 20:16.440 Sunglasses if I can track the entire Bush that may or may be possible but then I think I've got more 20:16.440 --> 20:21.880 than enough markers perhaps one right at the very top of the map as well or off the scene. 20:21.900 --> 20:23.610 See back in a few moments. 20:24.430 --> 20:31.840 Okay so this is my final set I'm just going to highlight all of my various markers that I've got and 20:31.900 --> 20:39.060 as I play through I'm going to just drag across the timeline here I can see I've got a good patch here. 20:39.060 --> 20:41.890 I do seem to have a rogue one floating about. 20:41.890 --> 20:47.230 I thought it was tracking something here however does not do any tracking at all. 20:47.230 --> 20:50.220 I wonder what it was linked to if anything at all. 20:51.180 --> 20:53.870 And that's this one in the top corner here. 20:55.550 --> 20:55.970 Okay. 20:55.970 --> 20:56.890 That's not doing a thing. 20:56.900 --> 20:57.950 I'm just going to delete it. 20:57.950 --> 20:59.320 Remove it from the scene. 20:59.600 --> 21:03.170 How are your markers looking Did you use the same scene as me. 21:03.170 --> 21:05.750 If so how did you select your markers. 21:05.990 --> 21:08.060 Where did you select them. 21:08.060 --> 21:11.810 Please remember to share your particular set up. 21:11.810 --> 21:17.200 Take a screenshot and share in the discussions and I will see you guys in the next lecture.