Upload OSJDTSFF_5 -Masking & Track Mattes.json with huggingface_hub

OSJDTSFF_5 -Masking & Track Mattes.json

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+        "file": "5 -Masking & Track Mattes.wav",
+        "transcription": {
+            "audio_file": "5%20-Masking%20%26%20Track%20Mattes.wav",
+            "text": "Welcome in this video. We're going to learn masking and track mats in the previous video We've learned the learning that you can use masks as a path however in this video We're going to learn masks as isolation and track mats as isolation and cutting out so let's jump in in the downloadable resources section you can find this picture of me and this picture is 6,000 by 330 pixels, which is a bit too much. So we can log the ratio to make sure that when we decrease the number of pixels, it's going to still fit the image. So let's do 2000 by 1100, that works for us. And you'll see that it zooms in a lot. Why it zooms in is because we had a very big picture like this, and we have a composition like this. and then we made a composition this size but the picture itself is still this big but the composition is this so that's why we have this kind of zoom in effect in order to solve this we have to press Shift Option Command H or G what this work it does is it fits whatever layer you want into the frame size, either horizontally or vertically. So for example, if I have a shape like this and I press Shift, Option, Command H, it's going to fit horizontally. But if I press Shift, Option, Command G, it's going to fit vertically. Let's learn the masks. Let me create by pressing Command Y a solid. Solid is used in many things in After Effects. Oftentimes it can be used as a background. You can also create a background in another way by just double clicking on the rectangle tool, either the rounded or a full rectangle. So if I double click, you can see we'll create a rectangle that fits the size of this frame, but we'll delete it. Okay, so now we have the background and we have the picture. Now, if I select any and absolutely any of the shapes, I can create a mask with the shape by selecting the picture. If I drag, as you can see, I can create any mask and basically cutting the rest of the image. But we're not necessarily cutting, we're just isolating the area that's shown with the mask. By pressing Command Z, I'm going to undo and then I'm going to create exactly the same mask. But now, because we're using the rounded rectangle tool we can round the edges. And the way we can round is by using the scroller on the mouse. So if I scroll up and down you can see it becomes either more round or less round. So this is the way you can customize it. If you were to create any shape it doesn't work like this. So if I use the mouse, it, as you can see, nothing changes. The way we would have to do this is we would have to go into the properties and customize the roundness, as you can see here. Let's delete this one. We can create a mask using a star tool. We just need to select our subject and this is what we can do. Now, in terms of the track matte, track matte works in a very interesting way. Let's say we create a rounded rectangle and we'll do it to something like this. We'll make sure we use the fill as a solid color, where we can disable the stroke color. This is the shape that we have. And we can select the picture on the background. And as you can see here, it says Track Matte. This is exactly what we're going to use. So we have to use this whip and basically whip the picture to the shape layer. You can see it works sort of like a mask, but instead of the mask being on one specific layer, we can use many different layers and track matte it to the shape. If we change the shape, you will see that it also changes the track matte. We change the position, we can also change the roundness. So whatever we do to the shape, it's going to influence how the image or whatever layer you have is represented. We can also do invert matte by pressing here. This is what we have. We can also do a Luma mat. And in order to do this, I need to show you it in a different way. Let's disable the background and we're going to create another solid by pressing Command Y. Let's add a gradient ramp. And at the top, we're going to have a darker area. At the bottom, we're going to have a brighter area. So white here, dark here. Now we can use this as a track mod. Once again, we're going to connect our image. We're going to whip it to the solid. Nothing happens. But if we select the Luma mask, something interesting happens. So you can see the darker areas. Actually, let's do it like this. You can see the darker areas are transparent because if I enable the track matte, you can see what happens. The darker areas are transparent and the brighter areas are not transparent at all. Depending on the project that you're working on, this can be super useful. And these are the kind of effects you can create using track mattes. We have an orange background, we have the white part, and then we have this part which actually will be a frame. We just have to add it because this is what it's supposed to be. So we have a person here speaking and then we have an interesting explanation here on the screen. Now it doesn't work only with shapes, it works with anything you have with any kind of layers. So if I was to create a text, let's create a text and make it absolutely huge. And let's put it in the middle. And now we can try to match the image to the text. Let's see what kind of effect we have. We can also invert it as we know, or we can create a luma. But luma does make sense here because we just have a background. One thing I forgot to tell you about the mask is we can create a mask and we can customize this mask. So we have the mask feather, which basically means how sharp or how untrarved the sides are. We have the mask opacity, which is straight forward, and we have the mask expansion. So we can either expand it or not expand it. If we decrease the feather, it's going to be easier to see. Mask expansion and we are expanding it. Or we can actually expand it inward. Go ahead and try it out. Play with this. If you have any questions, let me know by telling them that. I'll see you in the next video.",
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+            "timestamp": "2025-11-27T14:24:52.066377"
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