chromecast 协议

Google’s Chromecast is an excellent little streaming device that offers an easy and affordable way to get content from the little screen to the big one. The thing is, when you’re not using it, it can use over 15GB of data every month just idling. That’s a pretty significant amount for anyone on a metered connection.

Google的Chromecast是一款出色的小型流媒体设备，它提供了一种简便且经济的方式来将内容从小屏幕转移到大屏幕。 关键是，当您不使用它时，仅闲置一个月就可以使用超过15GB的数据。 对于使用计量连接的任何人来说，这都是一笔不小的数目。

为什么会这样？ (Why Does This Happen?)

“Why?” is naturally the first question most people have when it comes to all this data usage. The problem can be summed up in one word: Backdrops.

“为什么？” 自然，这是大多数人在使用所有这些数据时遇到的第一个问题。 这个问题可以用一个词来概括：背景。

You know those pretty pictures that show up on the screen when your Chromecast is idle? Those are called Backdrops. They’re high-resolution images that your Chromecast downloads every 30 seconds or so, which can really chew through your data as days turn into weeks and weeks into months. It’s crazy how much it can use, actually—upwards of 15GB in some cases (depending on your settings and whatnot).

您知道Chromecast闲置时在屏幕上显示的那些漂亮图片吗？ 这些被称为背景。 它们是高分辨率的图像，您的Chromecast每30秒左右下载一次，这些图像实际上可以在几天到几周，几周到几个月的时间内仔细检查您的数据。 实际上，它可以使用多少存储空间是疯狂的-在某些情况下高达15GB(取决于您的设置和其他设置)。

While you can easily customize your Backdrop settings, it’s not as easy to disable all the options that make the Chromecast stop eating data in the background—for that, you’ll need a workaround.

虽然您可以轻松自定义背景设置 ，但要禁用所有使Chromecast停止在后台停止接收数据的选项并不是一件容易的事，为此，您将需要一种解决方法。

选项一：使用电视上的USB端口为Chromecast供电 (Option One: Use a USB Port on Your TV to Power the Chromecast)

When you use the power supply that came with your Chromecast, you’re essentially providing constant power to the unit all the time. You know what that means? Backdrops are always running, even when your TV isn’t on.

当您使用Chromecast随附的电源时，实际上您一直在为设备提供恒定的电源。 你知道这意味着什么？ 即使电视没有打开，背景也会一直在运行。

Now, if you have an unlimited data connection at your house, this probably isn’t a big deal. And there are benefits of leaving your Chromecast running all the time, like Google Assistant voice control. As long as the Chromecast is powered up and your TV supports HDMI-CEC, you can say “Hey Google, turn on the TV” (or some variation thereof) and it will turn on the TV. That’s pretty awesome.

现在，如果您家中的数据连接不受限制，那么这可能没什么大不了的。 而且，让Chromecast始终保持运行有很多好处，例如Google Assistant语音控制。 只要打开Chromecast的电源并且您的电视支持HDMI-CEC ，您就可以说“嘿Google，请打开电视”(或其他方式)，然后它将打开电视。 太棒了

But if you don’t care about that, the best thing to do is just to power the Chromecast with one of the UBS ports on the TV. Most TVs disable power to the USB ports when you turn them off, which will effectively turn the Chromecast off whenever the TV is off. No power, no backdrops. That’s about as easy peasy as a solution can get, really.

但是，如果您对此不关心，最好的办法就是使用电视上的UBS端口之一为Chromecast供电。 大多数电视在关闭时都会关闭USB端口的电源，这将在电视关闭时有效地关闭Chromecast。 没有力量，没有背景。 确实，这与解决方案所能实现的一样简单。

To find out if your TV disables power to the Chromecast when it’s off, turn your TV off, then fire up the Google Home app on your phone. Tap the Devices button in the upper right corner and scroll through the list to see if the Chromecast shows up—if it does, then it’s still powered on. If it doesn’t, well, you’re golden.

要了解电视在关闭时是否会关闭Chromecast的电源，请关闭电视，然后启动手机上的Google Home应用。 点按右上角的“设备”按钮，然后滚动列表以查看Chromecast是否显示(如果显示)，则表明仍处于开机状态。 如果没有，那么，您就是黄金。

选项二：为您的背景创建几个小图像 (Option Two: Create a Couple of Small Images Specifically for Your Backdrop)

If the above option doesn’t work for one reason or another—you use voice control, or your TV doesn’t shut down its USB port when powered off—then you have another option. Basically, you need to create a couple of 1×1 images that you can place in a folder on Google Photos, which you’ll set as your backdrop. This will keep the Chromecast from using pictures outside of the specified images, which will take up essentially no bandwidth.

如果上述选项由于某种原因无法使用(您使用语音控制，或者电视在关闭电源后没有关闭其USB端口)，那么您可以使用另一种选择。 基本上，您需要创建几个1×1的图像，可以将它们放置在Google相册的文件夹中，并将其设置为背景。 这样可以防止Chromecast使用指定图片之外的图片，因为这些图片基本上不会占用带宽。

So, first things first: just download this zip file. It has two black 1×1 images in it. Go ahead and unzip the file so you can pull the images out.

因此，首先，首先要下载此zip文件 。 它具有两个黑色的1×1图像。 继续解压缩文件，以便将图像拉出。

Next, jump over to Google Photos. Log in if you’re not already, then click the Upload button. Choose the two 1×1 pixel images.

接下来，跳至Google相册 。 如果尚未登录，请单击“上传”按钮。 选择两个1×1像素的图像。

Once they’re uploaded, click the Create button and choose “Album.”

将其上传后，点击创建按钮，然后选择“相册”。

Choose both of the images, then click Create in the upper right corner.

选择两个图像，然后单击右上角的创建。

When the new album opens, give it a name—I’m going with “Chromecast.” When you’re finished, just click the checkmark in the upper left.

新专辑打开后，给它起个名字-我将使用“ Chromecast”。 完成后，只需单击左上方的复选标记。

With that out of the way, grab your phone and open the Google Home app, then tap on the Devices button.

不用担心，拿起手机并打开Goog​​le Home应用，然后点击“设备”按钮。

Find your Chromecast, then tap the three dots in the upper right corner of its card. Choose Backdrop Settings.

找到您的Chromecast，然后点按其卡右上角的三个点。 选择背景设置。

Tap on Google Photos, then choose only your Chromecast folder.

点击Google相册，然后仅选择您的Chromecast文件夹。

After that, make sure you disable all other options in Backdrop Settings. Just run through the list and disable everything. If you really want to make it minimal, you can even turn off the weather option, but it shouldn’t use that much data if you leave it on.

之后，请确保禁用“背景设置”中的所有其他选项。 只需遍历列表并禁用所有功能即可。 如果您确实希望将其最小化，甚至可以关闭天气选项，但是如果启用它，则不应使用那么多数据。

There you go. From now on, your Chromecast will just be a black screen all the time when idle. It may not be as pretty, but it’ll save you a pretty decent amount of geebees, which is worth the trade-off if you ask me.

妳去 从现在开始，您的Chromecast在空闲状态下一直都是黑屏。 它可能不那么漂亮，但是可以为您节省大量的吉它，如果您问我，这是值得权衡的。

翻译自: https://www.howtogeek.com/337719/how-to-tame-your-chromecasts-background-data-usage/

chromecast 协议