如果您需要将MacBook连接到电视，您有多种选择。它们中的大多数都快速而简单，但在某些情况下，您可能需要做一些额外的跑腿工作。
它确实取决于您拥有的MacBook的类型、电视，有时还取决于连接到电视的设备。我们将引导您了解您需要了解的关键事项以及让您的MacBook出现在大屏幕上的最有效方法。
你有哪款 MacBook？
Apple已经养成了彻底改变MacBook电脑上可用端口的习惯。如果您有 2016 年之前的旧MacBook，您会在机器上找到各种端口。这包括一个标准的HDMI端口。
如果您有 2021 年或更新的MacBook Pro 14或 16，您还会在计算机上找到HDMI端口。如果您拥有那几年制造的MacBook，甚至是 2021 年MacBook Pro 13 of Air，您只会发现两个或四个支持 Thunderbolt 的(Thunderbolt-enabled)USB-C 端口。Thunderbolt端口用途广泛，但无法直接连接到HDMI。
2008 年至 2010 年的MacBook Pro和MacBook Air机型配备了 mini (MacBook Air)DisplayPort视频输出。如果您想使用此端口连接到大多数电视，则需要一个mini DisplayPort 到 HDMI 适配器。(mini DisplayPort to HDMI adapter)
如果您的MacBook型号没有HDMI端口，则在连接到外部显示器时，您必须寻找不同的解决方案。对于大多数人来说，这意味着购买加密狗。
获取 HDMI 或 DisplayPort 适配器
如果您使用的是仅支持Thunderbolt 3的(Thunderbolt 3)MacBook，则必须购买一个适配器，以便为您的MacBook提供HDMI或DisplayPort连接。在大多数情况下，HDMI是正确的选择，因为所有平板电视(TVs)都支持HDMI。DisplayPort主要出现在计算机显示器上，尽管一些大尺寸显示器也有。
您可以购买仅添加HDMI的(HDMI)HDMI适配器，或者您可以将该功能作为多功能底座的一部分。虽然扩展坞比简单的HDMI适配器贵得多，但从长远来看，这是一个更好的选择，因为它可以让您访问最终必然需要的各种连接。
请特别注意给定(Pay)HDMI适配器支持的分辨率和刷新率。这在连接到4K 电视(4K TV)时尤为重要，因为许多适配器在这些分辨率下仅支持 24Hz 或 30Hz。虽然这对于幻灯片或播放大多数视频内容可能很好，但对于桌面使用来说却非常不稳定。
获取正确的电缆
既然您的MacBook已经正确连接到电视接口，我们需要一根电缆来弥合差距。如果您购买了HDMI适配器，请使用HDMI电缆。
虽然您可能会听到很多关于哪种HDMI电缆是“正确”购买的建议，但事实是任何HDMI电缆都可以正常工作。但是，要使用 60hz 的 4K 显示器，您需要一根HDMI 2.0或更新的电缆。如果您使用的是较旧的HDMI 1.4b电缆，则在 4K 时您将被限制为 30Hz。
如果您需要将MacBook连接到远处的电视，为什么不考虑购买一根长 HDMI 线呢(long HDMI cable)？在需要有源信号中继器之前， HDMI(HDMI)电缆的长度可长达 65 英尺（20m）。如果您正在进行演示或需要连接到远处的电视，其中一根电缆远没有无线连接那么复杂。更不用说更可靠了！
如果是临时设置，请考虑从亚马逊(Amazon)等在线商店购买一卷电工胶带以固定电缆。(gaffer tape)如果这是永久需要，专业地安装电缆是一个好主意。
检查电视的输入
既然我们已经为您的 MacBook 提供了一种连接电视的方法并整理好电缆，那么我们如何将它连接到电视？
在电视背面，您应该会看到一组HDMI端口。如果有一个开放端口，您只需将HDMI电缆的一端插入空闲的视频输入。如果所有端口都用完了，您可以拔下一个，但在某些情况下您可能不想这样做。
如果电视没有足够的HDMI端口，您可以使用HDMI 开关(HDMI switch)。这是具有多个HDMI输入和单个HDMI输出的设备。您可以使用它们来扩展电视的HDMI端口数量。
您可能还会注意到某些电视型号上的VGA或DVI连接。我们不建议您使用这些连接，除非您已经碰巧拥有正确的电缆和适配器并且由于某种原因无法使用HDMI。
如果无法选择使用有线连接，那么您唯一的其他选择就是使用无线连接。
使用 Airplay
AirPlay是Apple的内部无线流媒体技术。您可以将 macOS 桌面（和 iPhone 或 iPad）流式传输到任何支持充当AirPlay接收器的设备。对于电视(TVs)，这意味着流到通过HDMI连接到电视的(HDMI)Apple TV 设备。
由于Apple（还）不生产电视机，因此这是一个相当有限的选择。当然，如果您想将屏幕无线镜像到任何支持 HDMI 的电视上，您可以随身携带Apple TV，但这并不是最实用的解决方案。(Apple)如果您打算在家中使用Airplay ，则可能值得考虑购买Apple TV。(Apple)
好消息是，一些智能电视(Smart TVs)（例如三星(Samsung)和索尼(Sony)）现在支持Apple Airplay 2，这是撰写本文时该技术的最新版本。部分型号的Roku(Select)设备也支持 AirPlay(Roku devices also support AirPlay)。您必须查看您的特定型号的电视或Roku是否支持Airplay。在路上使用AirPlay的另一个问题是两个设备必须在同一个Wi-Fi网络上。
AirPlay 首次设置
首次使用AirPlay之前，您必须检查该功能是否已启用。(AirPlay)选择macOS 桌面左上角的Apple 菜单图标。(Apple Menu icon)
然后转到System Preferences > Displays。
在添加显示器下拉菜单下(Add Display drop-down menu)，您应该会看到列出的Apple TV 或其他AirPlay设备。(AirPlay)
首次添加AirPlay显示器时，您可能必须输入将在电视上显示的代码以进行身份验证。
在旧版本的 macOS 上，您可能还会在菜单栏中看到AirPlay图标。如果是这样，您可以直接单击它来打开或关闭AirPlay显示。
将内容投射到 Chromecast
由于野外的AirPlay(AirPlay)设备很少，您可能正在考虑使用Google Chromecast。许多智能电视(TVs)和安卓电视(Android TVs)都内置了Chromecast 。唯一的问题是Apple MacBook(Apple MacBooks)本身不支持将其屏幕镜像到Chromecast设备。
您可以将内容从YouTube等(YouTube)Google服务投射到Mac上的Chromecast，但这与使用AirPlay镜像(AirPlay)Mac屏幕不同。
这里唯一的办法是使用第三方应用程序，例如AirBeam TV。Mac App Store中有许多不同价位的不同选项，因此请花点时间选择适合您需求的选项。
镜像显示还是扩展显示？
将电视等外接显示器连接到MacBook时，您可以将其用作镜像显示器或扩展显示器。通过屏幕镜像，您的MacBook显示屏和电视屏幕可以显示完全相同的图像。
当您在演示时看不到电视时，这很有用，但这里有一些警告。现代电视(Modern TVs)的纵横比为 16×9，而MacBook(MacBooks)的纵横比为 16×10。它们也有不同的分辨率。如果电视正在镜像您的Mac显示器，它将被缩放以适合您的观众，这看起来不太好。您应该将电视作为主显示器，并让MacBook屏幕镜像它。现在MacBook的图像会不太理想，但你是唯一能看到它的人。
如果您将外部显示器用作扩展显示器（默认情况下应该是），它将有一个单独的桌面。您可以将窗口移到上面并将其用作单独的屏幕。
调整分辨率(Resolution)和刷新率(Refresh Rate)
通常，macOS 会正确检测电视的分辨率和刷新率，因此您无需执行任何操作。不幸的是，它有时会出错，在这种情况下，您必须手动更正设置。
首先，选择macOS 桌面左上角的Apple 菜单图标。(Apple Menu icon)然后选择System Preferences > Displays > Display Settings。
从连接显示器的左侧列表中(left hand list of connected displays)选择电视。然后在分辨率(Resolution)下，选择缩放以查看分辨率列表。
为您的电视选择正确的电视。如果是 4k 电视，合适的分辨率是 3840×2160。如果是全高清(Full HD)电视，正确的数字是 1920×1080。
在Refresh Rate下，为您的显示器选择正确的数字。对于绝大多数显示器，60hz 是最佳选择。但是，您的适配器、电缆，甚至旧款MacBook(MacBooks)可能仅支持 4K 分辨率下的 30Hz。您可以安全地使用 1920×1080 的 4K 电视并提高刷新率。这将使图像有点模糊，但会提高运动的平滑度。
调整电视设置
我们一直在谈论更改 MacBook 上的设置以在电视上获得最佳画面，但您可能也想在电视上更改一些内容。
某些电视(TVs)具有过扫描功能，其中一部分帧不可见。当连接到计算机时，这不是您想要的，因此请查阅您的电视手册。应该有一个设置来适应屏幕上的图像而没有任何过扫描。
您的电视可能还具有 PC 模式或类似模式，可消除影响清晰度、输入延迟和运动平滑的后处理效果。这些可能会降低将 MacBook 与电视一起使用的体验，因此最好禁用不必要的效果。
将音频发送到您的电视
即使您连接到电视等外接显示器，您仍然可以从 MacBook 的内置扬声器获取音频。您还可以自由使用插入耳机插孔的扬声器或耳机。蓝牙(Bluetooth)音频也是如此，无论是使用无线扬声器还是像AirPods Max这样的耳机。
但是，如果您通过HDMI连接到电视，则可以轻松地将音频发送到电视并从显示器获取声音。您必须选择电视作为声音输出设备。
插入HDMI连接并且您的图像在屏幕上正常工作，只需选择macOS 桌面右上角的控制中心按钮。(Control Center button)然后，选择Sound 旁边的向右箭头(right-facing arrow next to Sound)。
现在只需从菜单中选择HDMI音频设备。
声音(Sound)现在应该切换到电视扬声器。
在盖子关闭的情况下使用电视机
在某些情况下，您可能不希望在将Mac电脑连接到电视时让MacBook屏幕可见。例如，您可能希望将其滑到电视下方并将大显示屏用作主显示屏。
好消息是您无需执行任何特殊操作即可启用此功能。只要您连接了外部鼠标和键盘以及电视本身，您就可以合上盖子，MacBook将切换到外部显示器作为唯一的主显示器。
嘿！我上电视了！
正如我们所见，将Mac Book连接到电视通常与将其连接到外部 PC 显示器没有什么不同。虽然电视通常不能成为出色的桌面显示器，但它们非常适合观看电影或进行演示。如果您是Mac游戏玩家，启动Apple Arcade、连接控制器并花一些时间放松而不是工作也是不错的选择。并不是说本指南已经完成，这正是我们要做的。
How to Connect a MacBook to Your TV
If you need to connect your MacBook to a teleνiѕion, you have several options. Most of them are quick and easy, although in some cases, you may have to do a little extra legwork.
It does depend on the type of MacBook you have, the television, and sometimes devices connected to the TV. We’ll walk you through the key things you need to know and the most effective methods to get your MacBook on the big screen.
Which MacBook Do You Have?
Apple has made a habit of radically changing the available ports on their MacBook computers. If you have an older MacBook from before 2016, you’ll find a variety of ports on the machine. That includes a standard HDMI port.
If you have a MacBook Pro 14 or 16 from 2021 or newer, you’ll also find an HDMI port on your computer. If you own a MacBook made between those years or even a 2021 MacBook Pro 13 of Air, you’ll only find two or four Thunderbolt-enabled USB-C ports. Thunderbolt ports are versatile, but they can’t connect to an HDMI directly.
The MacBook Pro and MacBook Air models between 2008 and 2010 featured a mini DisplayPort video output. You’ll need a mini DisplayPort to HDMI adapter if you want to connect to most TVs using this port.
If you have a MacBook model without an HDMI port, you’ll have to look for a different solution when connecting to an external display. For most people, that means buying dongles.
Get an HDMI or DisplayPort Adapter
If you’re in the Thunderbolt 3-only MacBook boat, you will have to invest in an adapter to give your MacBook either an HDMI or DisplayPort connection. In most cases, HDMI is the right way to go since all flat-panel TVs support HDMI. DisplayPort is mainly found on computer monitors, although some large format displays have them.
You can buy an HDMI adapter that only adds HDMI, or you can get the feature as part of a multifunction dock. While a dock is much more expensive than a simple HDMI adapter, it’s a better purchase in the long run since it gives you access to a variety of connections that you’re bound to need eventually.
Pay special attention to the resolution and refresh rate supported by a given HDMI adapter. This is particularly important when connecting to a 4K TV since many adapters only support 24Hz or 30Hz at those resolutions. While that’s probably fine for a slideshow or playing most video content, it’s very choppy for desktop use.
Get the Right Cable
Now that your MacBook has the proper connection to interface with a TV, we need a cable to bridge the gap. If you’ve bought an HDMI adapter, use an HDMI cable.
While you may hear plenty of advice about which HDMI cable is the “right” one to buy, the truth is that any HDMI cable will work just fine. However, to use a 4K display at 60hz, you need an HDMI 2.0 cable or newer. If you’re using an older HDMI 1.4b cable, you’ll be limited to 30Hz at 4K.
If you need to connect your MacBook to a TV that’s far away, why not consider buying a long HDMI cable? HDMI cables can go up to 65 feet (20m) in length before needing a powered signal repeater. If you’re doing a presentation or otherwise need to connect to a TV far away, one of these cables is far less complicated than a wireless connection. Not to mention much more reliable!
Consider investing in a roll of gaffer tape from online stores like Amazon to secure the cable if it’s a temporary setup. If it’s a permanent need, installing the cable professionally is a good idea.
Check Your TV’s Inputs
Now that we’ve provided your MacBook with a way to connect to the TV and have a cable sorted, how do we connect it to the TV?
On the back of your television, you should see a set of HDMI ports. If there’s an open port, all you have to do is plug one end of your HDMI cable into a free video input. If all the ports are used up, you can unplug one, but you may not want to do that in some cases.
If the TV doesn’t have enough HDMI ports, you could use an HDMI switch. This is a device with multiple HDMI inputs and a single HDMI output. You can use them to expand the number of HDMI ports a TV has.
You may also note VGA or DVI connections on some TV models. We don’t recommend that you use these connections unless you already happen to have the right cables and adapters and can’t use HDMI for some reason.
If using a wired connection isn’t an option, then your only other choice is to use a wireless connection.
Use Airplay
AirPlay is Apple’s in-house wireless streaming technology. You can stream your macOS desktop (and iPhone or iPad) to any device that supports acting as an AirPlay receiver. For TVs, that means streaming to an Apple TV device connected to a TV via HDMI.
Since Apple doesn’t make a TV set (yet), this is a rather limited option. Of course, you could carry an Apple TV around with you if you wanted to mirror your screen wirelessly to any HDMI-enabled TV, but it’s not the most practical solution. If you’re going to use Airplay in your own home, investing in an Apple TV may be worth considering.
The good news is that some Smart TVs (e.g., Samsung and Sony) now have support for Apple Airplay 2, the latest version of the technology at the time of writing. Select models of Roku devices also support AirPlay. You’ll have to look up whether your specific model of TV or Roku supports Airplay or not. Another issue with using AirPlay on the road is that both devices have to be on the same Wi-Fi network.
AirPlay First-Time Setup
Before you can use AirPlay for the first time, you must check that the feature is enabled. Select the Apple Menu icon at the top-left of the macOS desktop.
Then go to System Preferences > Displays.
Under the Add Display drop-down menu, you should see the Apple TV or other AirPlay device listed.
The first time you add an AirPlay display, you may have to enter a code that will be shown on the TV to authenticate.
On older versions of macOS, you may also see the AirPlay icon in the menu bar. If so, you can click on that directly to turn an AirPlay display on or off.
Cast Content to a Chromecast
Since there are so few AirPlay devices out in the wild, you might be considering a Google Chromecast instead. Many smart TVs and Android TVs have Chromecast built into them. The only problem is that Apple MacBooks don’t natively support mirroring their screens to Chromecast devices.
You can cast content from Google services like YouTube to a Chromecast from a Mac, but that’s not the same as mirroring your Mac screen using AirPlay.
The only recourse here is to use third-party apps such as AirBeam TV. There are plenty of different options in the Mac App Store at different price points, so take your time and pick the one that suits your needs.
Mirrored or Extended Display?
When connecting an external display such as a TV to your MacBook, you can use it as either a mirrored or extended display. With screen mirroring, your MacBook display and TV screen show precisely the same image.
This is useful when the TV isn’t going to be visible to you while you’re presenting, but there are some caveats here. Modern TVs have a 16×9 aspect ratio and MacBooks have a 16×10 ratio. They also have different resolutions. If the TV is mirroring your Mac display, it will be scaled to fit, which won’t look great to your audience. You should make the TV your main display and have the MacBook screen mirror it instead. Now the MacBook’s image will be less than ideal, but you’re the only one that can see it.
If you’re using the external display as an extended display (which should be by default), it will have a separate desktop. You can move windows onto it and use it as a separate screen.
Adjusting the Resolution and Refresh Rate
Usually, macOS will correctly detect your TV’s resolution and refresh rate, so you don’t need to do anything. Unfortunately, it gets it wrong sometimes, in which case you’ll have to correct the setting manually.
First, select the Apple Menu icon at the top-left of the macOS desktop. Then select System Preferences > Displays > Display Settings.
Choose the TV from the left hand list of connected displays. Then under Resolution, select Scaled to see a list of resolutions.
Choose the correct one for your TV. If it’s a 4k TV, the proper resolution is 3840×2160. If it’s a Full HD TV, the correct number is 1920×1080.
Under Refresh Rate, choose the correct number for your display. For the vast majority of displays, 60hz is the best choice. However, your adapters, cable, and even older MacBooks may only support 30Hz at 4K resolutions. You can safely use a 4K TV at 1920×1080 and raise the refresh rate. This will make the image a little fuzzier but improve the smoothness of motion.
Tweaking Your TV Settings
We’ve mostly been talking about changing settings on your MacBook to get the best picture on your TV, but there are some things you may want to change on the TV too.
Some TVs have an overscan feature where a part of the frame isn’t visible. When connected to a computer, that’s not something you want, so consult your TV manual. There should be a setting to fit the image on the screen without any overscan.
Your TV may also have a PC mode or something similar that removes post-processing effects that affect sharpness, input delay, and motion smoothing. These can detract from the experience of using your MacBook with a TV, so it’s best to disable unnecessary effects.
Sending Audio to Your TV
Even if you’re connected to an external display such as a TV, you can still get audio from your MacBook’s internal speakers. You’re also free to use speakers or headphones plugged into the headphone jack. The same goes for Bluetooth audio, whether using a wireless speaker or headphones like the AirPods Max.
However, if you’re connected to a TV via HDMI, you can easily send audio to the TV and get sound from the display. You have to choose the TV as the sound output device.
With the HDMI connection plugged in and your image correctly working on-screen, simply select the Control Center button at the top right of the macOS desktop. Then, select the right-facing arrow next to Sound.
Now simply select the HDMI audio device from the menu.
Sound should now switch to the TV speakers.
Using the TV With the Lid Closed
In some cases, you may not want to have the MacBook screen visible while connecting your Mac computer to a TV. For example, you may want to slide it underneath the TV and use the large display as your main display.
The good news is that you don’t have to do anything special to enable this feature. As long as you have an external mouse and keyboard connected, along with the TV itself, you can close the lid, and the MacBook will switch over to the external display as the only main display.
Hey! I’m on TV!
As we’ve seen, connecting your MacBook to a TV is generally no different from connecting it to an external PC monitor. While a TV usually doesn’t make for an excellent desktop display, they are perfect for watching movies or doing presentations. If you’re a Mac gamer, it can also be nice to boot up Apple Arcade, connect a controller, and spend some time just relaxing instead of working. Not that this guide is done, that’s exactly what we’re going to do.
