WEBVTT 00:01.400 --> 00:08.180 Welcome to transparent backgrounds in this bonus video going to learn how to set up your background 00:08.630 --> 00:10.550 as transparence. 00:10.640 --> 00:16.770 The options are different in both blender render and cycles so we'll cover both of those and they're 00:16.810 --> 00:18.080 relatively straightforward. 00:18.080 --> 00:23.930 However the options are hidden in a way and what you'll end up with as as you can see here you end up 00:23.930 --> 00:31.490 being able to present a model on to a background because the background itself is transparent. 00:31.970 --> 00:35.690 And let's go explore this now and hop on over into blender. 00:38.020 --> 00:42.160 Okay so we're over in blender here and let's just go ahead and render our scene. 00:42.160 --> 00:47.830 I'm going to hit off 12 to do that now we can see on the info head a bar and obviously by this rendering 00:47.830 --> 00:52.270 itself being so starkly contrasted it is blender render. 00:52.480 --> 00:58.450 And you can see the background here is still grey when it's transparent you get that kind of chequered 00:58.540 --> 00:59.500 effect. 00:59.500 --> 01:06.980 Now if we export this as is in going to file and save an image then we're going to end up with this 01:06.980 --> 01:12.640 key with a grey background on it which is not what we want we want the cube isolated from the rest of 01:12.640 --> 01:13.310 the scene. 01:13.540 --> 01:14.990 So how do you do that. 01:15.370 --> 01:19.980 Well it's in the render properties for both blender render and cycles. 01:19.990 --> 01:21.790 But it's in different places. 01:21.790 --> 01:22.970 Logical Yes. 01:23.200 --> 01:23.790 Okay. 01:23.890 --> 01:29.510 So we need to scroll down and t find shading it's probably collapsed as mine is here. 01:29.680 --> 01:36.190 If we go ahead and open that up we have a series of options and we need to change the option that says 01:36.280 --> 01:41.330 Alpha changed that from sky to transparence. 01:41.350 --> 01:47.650 Now when we go ahead and render our image you can see that the background itself has this chequered 01:47.650 --> 01:48.530 appearance. 01:48.670 --> 01:52.300 And then you can go ahead and get an image and save an image. 01:52.300 --> 01:58.250 Now I am going to I've already saved one here as a test the one you saw a moment ago. 01:58.330 --> 02:04.120 I'm going to set one up that's for Blender render and I'm going to savour in a few moments. 02:04.120 --> 02:10.940 But before we do let's go down to the lower left hand corner and have a look at the options. 02:10.960 --> 02:12.840 So we've got a P N G select. 02:12.850 --> 02:15.810 At the moment which does contain an alpha layer. 02:16.000 --> 02:22.630 However sometimes a production of a PRNG with a now fired out layer especially there's a gradient between 02:22.630 --> 02:28.090 it be the cue for instance is just a solid edge so that's fine if you have a graduated something like 02:28.090 --> 02:30.100 a light effect or a particle effect. 02:30.280 --> 02:33.000 Then you may want to select something different. 02:33.070 --> 02:35.010 You may wish to select tiff. 02:35.020 --> 02:40.990 Now it's going to produce a larger file but it's going to handle the Alpher layer much better than potentially 02:41.000 --> 02:42.480 the PRNG does. 02:42.610 --> 02:49.840 But Store is a PRNG first see how it works and if you end up with a slight halo effect around your image 02:49.840 --> 02:54.710 when you apply it to a background then you probably want to try a different formats colour depth where 02:54.760 --> 02:59.800 most people don't have the ability to see more than 8 bits on their monitors so you can leave it as 02:59.800 --> 03:00.300 that. 03:00.310 --> 03:05.520 However if your models be made for a high dynamic range environment. 03:05.560 --> 03:09.190 HRT visa starts to come around and monitors won't be far behind. 03:09.190 --> 03:12.900 I'm sure you'll want to make sure that's set to 16 bits. 03:13.030 --> 03:20.020 In some ways you know it is better to have the highest quality possible but on the same fronts you don't 03:20.020 --> 03:23.970 need extra where it's not going to make any difference whatsoever. 03:24.250 --> 03:29.320 So with that selected I can go ahead and click save image and now I've got an image on my computer with 03:29.320 --> 03:34.180 an outfit out background that I can now apply to whatever I want. 03:34.180 --> 03:38.160 So we've explored that in blender render how do we do it in cycles. 03:38.440 --> 03:43.910 Well we can switch over to the cycles render engine first so we can see what's going on. 03:44.320 --> 03:48.070 The rendering properties change quite dramatically when this happens. 03:48.190 --> 03:52.630 And in order to render the background transparent we need to change a couple of options. 03:52.630 --> 03:56.220 So let's first of all render it as it is and see what happens. 03:56.270 --> 04:02.740 Now I'm currently using my CPA to render and it's taking a little while to do harm but I'm going to 04:02.740 --> 04:04.430 switch across to GP you now. 04:04.570 --> 04:08.000 I'm also going to change my samples. 04:08.200 --> 04:09.750 No not samples. 04:09.760 --> 04:15.640 I'm going to change my proof under my performance setting this ungeared a set her 2 5 6 2 5 6 for the 04:15.640 --> 04:17.770 moment so it renders a bit quick for you guys. 04:17.980 --> 04:23.590 So where in this muddle of options do we change to make this background transparent. 04:23.860 --> 04:29.210 Well it's under the film dropdown This may or may not be open for you so fine. 04:29.220 --> 04:35.680 The film properties and put a tick in transparent and there we can see that if we hover over the world 04:35.690 --> 04:37.430 background is transparent. 04:38.380 --> 04:45.430 Now when we go ahead with that box checked and we hit render we get it rendered out with feet. 04:45.440 --> 04:50.110 Alpher layer and once again you can go ahead and save that's to your hard drive. 04:50.110 --> 04:50.650 There we go. 04:50.650 --> 04:52.220 Nice and straightforward. 04:52.300 --> 04:55.880 But it is a little bit complicated where they've hidden it away. 04:55.990 --> 04:58.020 I hope you find that incredibly helpful. 04:58.270 --> 05:00.780 And we'll see you guys in the next lecture.