在使用Adobe Premiere Pro CC(Adobe Premiere Pro CC)编辑软件创建有趣视频的众多可能性中，创建复合视频可能是在许多情况下使用的一种方法。将一个视频放在另一个视频中对于编辑特效(editing special effects)非常有用，但实际上开始使用这种技术可能会感觉有点不知所措。特别是如果您是Premiere的初学者视频编辑器，本教程可以帮助您掌握在程序中创建复合视频的方法。
创建此效果需要使用蒙版和蒙版跟踪，这不一定很困难，但确实需要一些时间。但是，通过下面概述的这些步骤，您将能够轻松制作复合视频编辑效果，并获得社交媒体准备好的有趣且专业的最终结果。
如何在视频中嵌入视频(How to Embed a Video Inside a Video)
首先，确保在新项目的媒体箱中上传要用于合成的视频。您可以按照以下步骤添加您的第一个视频(add your first video)并创建蒙版。
- 在时间线的V2(V2)轨道上添加要放置第二个视频的视频。确保您已将剪辑修剪或选择入点和出点到您想要的长度。
- 选择此剪辑，然后打开“效果控件( Effect Controls)”面板。
- 查看(Look)不透明度(Opacity)下，您会看到椭圆、矩形或钢笔（自由绘制）的图标。选择一个适合您要掩蔽的对象的对象，这是您希望第二个视频播放的位置。
- 使用您选择的工具，创建一个遮罩，覆盖您希望第二个视频播放的区域。
- 如果您的蒙版对象在视频中移动，则您必须进行一些蒙版跟踪。在“效果控件(Effect Controls)”面板中，单击“蒙版路径”(Mask Path)选项旁边的扳手图标(wrench icon)，然后在下拉菜单中选择一个适用于您的对象的选项。然后单击扳手左侧的播放按钮。
- 您可以使用播放(Playback )选项查看蒙版跟踪在播放期间的外观，如果您需要修复任何内容，您可以使用预览控件将点移动到需要的位置。
现在您已经创建了蒙版，您将能够继续添加您的第二个视频。
- 将第二个视频放在第一个视频下方的时间线中的 V1 轨道上。
- 现在，您将能够通过您创建的蒙版查看视频的外观。为了在您的视频中正确定位它，请使用效果(Effects)选项卡中的位置、缩放和旋转(Position, Scale, and Rotation)工具。如果您对移动对象使用蒙版跟踪，您可能还需要使用关键帧来保持第二个视频的位置与对象一致。
如果您不熟悉使用关键帧，请查看我们(our article)涵盖该主题的文章。如果需要，关键帧可用于为某些效果设置动画。
创建复合视频的提示(Tips for Creating a Composite Video)
上述步骤将允许您创建基本构图，但是，您还需要记住一些可以帮助您微调视频的事项。
使用 Lumetri 颜色
当您第一次将两个单独的视频剪辑放在一起时，颜色很可能不会完全匹配。这可能会使复合材料看起来不那么和谐。但是，如果您使用 Lumertri 颜色对一个或两个视频进行一些颜色校正(some color correction)工作，以使它们更好地匹配，这对于任何不一致都有很大帮助。
您可以使用基本的色彩校正选项来更巧妙地改变事物，或者您可以在视频中添加一些预设来改变整体外观。
羽毛你的面具
首次创建蒙版时，您会看到一个名为Mask Feather的选项。这将使蒙版的边缘与您设置的一样多。这样做可以帮助将添加的视频融合到第一个视频中，使其看起来更加无缝。
您需要增加蒙版羽毛(Mask Feather)，直到边缘稍微模糊，所以它不太明显。当然，如果您的特定项目需要它，您可以随心所欲地增加或减少。
花点时间进行面罩跟踪
我们明白了，口罩跟踪可能是一项乏味的考验。但是为了一个整洁的最终结果是值得的。当您进行面罩跟踪时，最好确保它被顺利跟踪。在需要时更改跟踪的关键帧将确保这一点，您可以继续播放预览并调整跟踪，直到它看起来很流畅。
使用复合视频创建特殊效果(Create Special Effects With Composite Videos)
将两个或更多视频拼接在一起的能力可以在视频内容中实现大量创造性用途，而在创建复合视频时，真的是无限的。你做得越好，你也可以制作更高级的效果。本教程应该为您提供一个良好的工作基础来开始和改进复合视频创建。
How to Embed a Video Inside a Video in Adobe Premiere
Out of the manу possibilities for creatіng an interesting videо with the editing software Adоbe Premiere Pro CС, creating a composite vidеo сan be a method used in many situations. Putting a vidеo inside another video іs extremely useful for editing special effects, but actually getting started with this technique may feel a bit overwhelming. Especially if you’re a beginner video editor in Premiere, this tutorial can help you get a handle on creating composite video in the program.
Creating this effect will need to use masks and mask tracking, which isn’t necessarily difficult but does take some time. However, with these steps outlined below, you’ll be able to make your composite video editing effect easily and get an interesting and professional-looking end result that’s social media ready.
How to Embed a Video Inside a Video
To begin, make sure you upload videos you want to use for the composite in your media bin in your new project. You can follow these next steps to add your first video and create a mask.
- Add the video you want to place the second video onto first, on the V2 track in the timeline. Make sure you have trimmed the clip or selected in and out points to your desired length.
- Select this clip, then open the Effect Controls panel.
- Look under Opacity and you’ll see icons of an ellipse, rectangle, or pen (free draw). Select one that fits the object you will be masking, which is where you want the second video to go.
- Using your selected tool, create a mask that covers the area you want the second video to go.
- If your masked object is moving in the video, you’ll have to do some mask tracking. In the Effect Controls panel, click on the wrench icon next to the Mask Path option and select an option in the dropdown menu that will work for your object. Then click on the play button to the left of the wrench.
- You can use the Playback option to see how the mask tracking looks during playback, and if you need to fix anything you can use the preview controls to move the points where needed.
Now that you’ve created the mask, you will be able to go ahead and add in your second video.
- Place the second video on the V1 track in the timeline beneath your first video.
- Now you’ll be able to see how the video looks through the mask you created. In order to position it correctly in your video, use the Position, Scale, and Rotation tools in Effects tab. If you use mask tracking with a moving object, you may also need to use keyframes to keep the positioning of the second video in line with the object.
If you aren’t familiar with using keyframes, check out our article covering the topic. Keyframes can be used to animate certain effects if needed.
Tips for Creating a Composite Video
The steps above will allow you to create a basic composition, however, there are some more things you’ll want to keep in mind that can help you fine-tune your video.
Use Lumetri Color
When you first put two separate video clips together, it’s very likely the colors won’t exactly match up. This could make the composite look less harmonious. However, if you use Lumertri color to do some color correction work on one or both of the videos to get them to match up better, this can help a lot with any inconsistencies.
You can use the basic color correction options to change things more subtly, or you can add some presets to the video to change the overall look.
Feather Your Mask
When you first create your mask, you’ll see an option called Mask Feather. This will feather out the edges of the mask as much as you set it. Doing this can help blend the added video into the first and make it look more seamless.
You’ll want to increase the Mask Feather until the edges are just slightly blurred, so it’s less noticeable. Of course, if your specific project calls for it, you can feather as much or as little as you want.
Take Your Time With Mask Tracking
We get it, mask tracking can be a tedious ordeal. But it’s worth it for a tidy end result. When you are doing mask tracking, it’s best to make sure it is being tracked smoothly. Changing the keyframes of the tracking when needed will ensure this, and you can keep playing back the preview and tweaking the tracking until it looks smooth.
Create Special Effects With Composite Videos
The ability to piece two or more videos together can allow for tons of creative uses in video content, and really the sky’s the limit when creating composite video. The better you get at it, the more advanced effects you can make too. This tutorial should give you a good working foundation to start with and improve composite video creation.
