您已经看过人们使用最疯狂的事物作为(craziest things as backdrops)Zoom和Teams会议背景的视频。但是他们从哪里得到所有这些特殊效果呢？我们将与您分享 8 个最佳的绿屏特效在线资源。
什么是绿屏？(What Is a Green Screen?)
“绿屏”一词已成为任何允许两个视频无缝叠加的东西。拍摄了一段视频，拍摄对象在一块大绿布前。然后使用视频编辑软件(Video editing software)将第一个剪辑的绿色部分替换为另一个剪辑。这将两个剪辑分层。
如今，这种编辑几乎可以在任何计算机上完成，但是拥有一台功能强大的笔记本电脑来进行视频编辑会很棒。如果做得好，它会呈现两个剪辑的无缝集成。此过程的正确名称是“色度键”。
YouTube
业余视频的在线主页是获取构建视频的部件的地方。您需要知道如何从 YouTube 下载视频(how to download videos from YouTube)以充分利用这些资源。
有数十个甚至数百个YouTube频道致力于提供免费的绿屏特效。一些较大的频道包括Green Screen Animation、Free Green HD、HD Green Screen和BestGreenScreen。
如果您正在寻找绿屏效果、动态图形、音乐或声音效果，Videvo需要在您的列表中。它们在从 720p 到 4K 的分辨率中具有多种效果。有些是您需要付费的高级剪辑，但也有很多免费资源。
Videvo对于绿屏视频特别有用，让您可以像在平板电脑、计算机或手机上一样呈现您的内容。
Pexels是一个用户提交的股票网站，提供数千种创意资源。一切都可以免费使用、免版税、免署名。不过，将功劳归功于创作者总是很好的。纯绿屏效果的数量有限，但有很多背景设计用于绿屏。
Videezy是一个拥有 4,000 多个免版税绿屏视频的免费增值网站，位于付费付费服务和用户提交的免费服务之间。它适用于信用系统。您购买的积分越多，每积分的价格就越便宜。
每个专业视频都需要一个积分，但也有许多免费的。按文件类型、许可证类型、分辨率或格式过滤搜索结果。(Filter)Videezy可让您轻松找到适合您的视频。
您可能不会想到动画 GIF 的绿屏。但是现在您知道这是一件事，Gfycat是制作您自己的动画 gif(making your own animated gifs)的绝佳资源。
请记住，这些是用于动画 GIF 的。它们是不稳定的低帧速率，非常短且分辨率低。所有绿屏 GIF 都可以免费使用和用户提交。
另一个用户提交的内容网站，Pixabay类似于Pexels。所有内容均可免费用于商业用途，无需注明出处。但如果可能，请务必注明出处。每个文件的页面上都有一个咖啡按钮，可让您向创建者捐款。
效果是高质量的，范围从飞行订阅按钮到数字倒计时到设备模型。
拥有优质绿屏效果库存的网站将以高价出售。如果您的项目需要最好的，那么也许Shutterstock是值得的。
根据所需的分辨率，单个镜头的成本可能从 65 美元到 179 美元不等。通过购买其中一个剪辑包，可以降低每个剪辑的成本。获得 5 个标清剪辑包可将每个剪辑的成本降低到 59.80 美元。您购买的越多，您为每个剪辑支付的费用就越少。
这个网站似乎有很多关于人们展示或做事的绿屏镜头。还有设备模型和一些过渡效果。DepositPhotos不是免费的，但它可能是最便宜的付费选项。根据所需的定义，每个剪辑的价格可低至 12.76 美元至 169 美元。
这是一个寻找比免费的东西更精致但不像网络广播质量的东西那么贵的东西的好地方。
Make The Scene…The Green Scene!
没有预算或预算很少，并且有上述资源，您就可以很好地组建自己的 YouTube 工作室(putting together your own YouTube studio)。或者也许只是将它们集成到您的视频会议应用程序中(video conferencing app)？也许在 Twitch 上流式传输时(streaming on Twitch)使用它们？
使用免版税音效(royalty-free sound effects)或YouTube 安全音乐(YouTube safe music)为您的视频添加一些深度。一旦你有了制作绿屏视频的工具，限制就取决于你了。
The 8 Best Online Sources For Green Screen Special Effects
You’ve seen the videos where peоple are using the craziest things as backdrops for their Zoom and Teams meetings. But where do they get all those special effects? We’re going to share with you the 8 best online sources for green screen special effects.
What Is a Green Screen?
The term ‘green screen’ has come to mean anything that allows two videos to be seamlessly overlaid on each other. A video is taken with the subject in front of a large green cloth. Video editing software is then used to replace the green parts of the first clip with another clip. This layers the two clips.
This kind of editing can be done on almost any computer these days, but having a laptop powerful enough for video editing would be great. When done well, it presents a seamless integration of the two clips. The proper name for this process is ‘chroma key’.
YouTube
The online home of amateur videos is the place to get the parts to build your videos. You‘ll need to know how to download videos from YouTube to make the best of these resources.
There are dozens, maybe hundreds of YouTube channels dedicated to providing free green screen special effects. Some of the bigger channels include Green Screen Animation, Free Green HD, HD Green Screen, and BestGreenScreen.
If you’re looking for green-screen effects, motion graphics, music or sound effects, Videvo needs to be on your list. They have a variety of effects in resolutions from 720p to 4K. Some are premium clips you need to pay for, but there are a lot of free resources too.
Videvo is especially helpful for green screen videos that allow you to present your content as though it’s on a tablet, computer, or phone.
A user-submitted stock site, Pexels offers thousands of creative resources. Everything is free to use, royalty-free, and attribution-free. It’s always nice to give credit to the creator though. The number of straight green screen effects is a bit limited, but there are a lot of backgrounds designed for use with a green screen.
A freemium site with over 4,000 royalty-free green screen videos, Videezy sits in the middle of premium paid services and user-submitted free services. It works on a credit system. The more credits you buy, the cheaper the per credit price.
Each pro video costs one credit, yet there are many free ones too. Filter search results by file type, license type, resolution, or format. Videezy makes it easy to find the right video for you.
You might not think of green screens for animated gifs. But now that you know that’s a thing, Gfycat is a great resource for making your own animated gifs.
Keep in mind that these are for animated gifs. They’re a choppy low frame rate, are very short, and low resolution. All the green screen gifs are free to use and user-submitted.
Another user-submitted content site, Pixabay is similar to Pexels. All the content is free for commercial use and no attribution is required. But please do make attributions if possible. There’s a coffee button on each file’s page to allow you to make a donation to the creator.
The effects are high quality and range from flying subscribe buttons to numeric countdowns to device mockups.
A site with premium quality green screen effect stock is going to come at a premium price. If your project requires the best, then maybe Shutterstock is worth it.
A single piece of footage can cost from $65to $179 depending on the resolution needed. The cost per clip can be reduced by purchasing one of their clip packs. Getting the 5 standard definition clip pack reduces the per clip cost to $59.80. The more you buy the less you pay per clip.
This site seems to have a lot of green screen footage of people presenting or doing things. There are device mockups and some transition effects as well. DepositPhotos is not free, but it may be the least expensive paid option. Depending on the definition needed, the price can be as low as $12.76 up to $169 per clip.
It’s a good spot to find something a little more polished than the free stuff, but not as expensive as the network broadcast-quality stuff.
Make The Scene…The Green Scene!
With a no budget or a very small one, and the resources above, you’re well on your way to putting together your own YouTube studio. Or maybe just integrate them into your video conferencing app? Perhaps use them while streaming on Twitch?
Add some depth to your video with royalty-free sound effects or YouTube safe music. Once you have the tools to do green screen videos, the limits are up to you.
