How to connect a Mac to a TV with HDMI: picture, sound, and HDR

To connect a Mac to a TV with HDMI, plug a high-speed HDMI cable into your Mac’s built-in HDMI port (or into a USB-C to HDMI adapter on MacBook Air), select the corresponding HDMI input on your television, and choose “Extend” in System Settings › Displays. If the movie plays picture without audio, open System Settings › Sound › Output and select your television name from the device list to route the digital audio stream through your TV speakers.

Connecting your Mac to a living room TV lets you enjoy high-definition movies, streaming video, and home recordings on an expansive display. However, achieving clean image fidelity requires configuring a few essential macOS display settings: matching the native 4K resolution, enabling High Dynamic Range (HDR), selecting a film-friendly refresh rate, and disabling overscan cropping.

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How to connect a Mac to a TV using HDMI

1. Connect CableDirect HDMI or USB-C
2. Select InputTV HDMI 1 or 2
3. Extend DesktopSystem Settings
4. Enable HDRSet 24Hz or 60Hz
5. Route AudioSound › Output

How do you connect your Mac to a TV using HDMI?

The physical connection method depends on which Mac model you own.

Apple Silicon Macs divide into two categories regarding physical video ports:

1. Macs with Built-in HDMI Ports: The 14-inch and 16-inch MacBook Pro, Mac mini, Mac Studio, and Mac Pro feature a dedicated, full-size HDMI port on the chassis. You can connect standard HDMI cables directly without dongles. On Macs equipped with M2 Pro/Max, M3 Pro/Max, or M4 chips, this port supports HDMI 2.1, delivering up to 8K at 60 Hz or 4K at 240 Hz with VRR and HDR as documented in Apple’s HDMI port hardware specifications.
2. Macs Requiring USB-C Adapters: The MacBook Air and 24-inch iMac do not feature built-in HDMI ports. To connect to a TV, you need a USB-C to HDMI adapter or a direct USB-C to HDMI cable. For 4K movie playback with HDR, verify that the adapter is rated for 4K @ 60Hz (HDMI 2.0) or 4K @ 120Hz (HDMI 2.1); budget adapters capped at 4K @ 30Hz produce noticeably sluggish mouse tracking and stuttering video.

Follow these steps to establish the physical connection:

1. Power on your Mac and turn on your television.
2. Insert one end of your HDMI cable into your Mac (or USB-C adapter) and the other end into an HDMI port on your TV (such as HDMI 1 or HDMI 2). For modern features like eARC, HDR, or high refresh rates, use ports labeled “HDMI 2.1” or “Enhanced” on your TV.
3. Using your television remote control, switch the input source to match the physical port you used.
4. Your Mac display will briefly flash blue or black while the operating system completes the digital EDID handshake, after which your macOS desktop wallpaper will appear on the TV.

For a deeper technical comparison of cable bandwidths and protocols, read our breakdown of USB-C vs HDMI on Mac.

Should you choose “Mirror” or “Extend” display mode for movies?

Once connected, macOS asks how you want to manage your multi-monitor desktop. Open System Settings › Displays to review the arrangement.

macOS provides two operational display modes:

1. Mirror Displays (Not Recommended for Movies)

Mirroring duplicates your laptop screen’s exact image onto the television. Because MacBooks feature 16:10 aspect ratio displays (such as 3024 × 1964 or 2560 × 1600 pixels) while televisions use a 16:9 standard (3840 × 2160 pixels), mirroring forces macOS to pick a compromise resolution.

• The Problem: Your TV is forced to display thick black pillarboxes on the left and right sides. Furthermore, macOS frequently disables High Dynamic Range (HDR) during mirroring because it cannot synchronize different brightness profiles across two panels simultaneously.

2. Extend Displays (Recommended for Movies)

Extending treats your television as an independent, secondary monitor situated beside your Mac screen.

• The Advantage: Your television runs at its true native 3840 × 2160 4K resolution, fills the entire 16:9 screen without black side bars, and operates its own dedicated color space and refresh rate. You can drag your video player window onto the television screen, enter full-screen mode, and keep your MacBook display free for email, notes, or web browsing.

To configure Extend mode, navigate to System Settings › Displays, click your television icon, and ensure the Use as dropdown menu is set to Extended display (or Stop Mirroring).

How do you fix “no sound” from your TV when connected via HDMI?

The most common issue when connecting a Mac to a TV via HDMI is that video plays smoothly, but the sound continues to play from the laptop’s internal speakers.

Unlike Windows PCs, which automatically reroute audio to any newly connected HDMI endpoint, macOS sometimes leaves default system audio assigned to the built-in speakers.

To redirect audio to your TV:

1. Click the Apple menu () and select System Settings.
2. Click Sound in the left sidebar, then click the Output tab at the top.
3. In the list labeled Select a device for sound output, locate your television model name (or the name of your connected AV receiver or soundbar).
4. Click your television name to select it. A highlight will confirm it is active as the primary output device.

According to Apple’s sound output troubleshooting guide, Apple Silicon Macs can transmit up to 8 channels of uncompressed 24-bit audio at 192 kHz over HDMI, supporting Dolby Surround 5.1 and stereo PCM.

If you encounter audio decoding errors or silence when playing movies with AC-3 or DTS soundtracks, consult our guide on resolving DTS and AC-3 no sound on Mac.

Note that when audio is routed over an HDMI connection, the volume buttons on your Mac keyboard are typically disabled. This is standard HDMI protocol behavior: macOS passes a fixed-level digital bitstream to the TV, requiring you to adjust playback volume using your television remote or soundbar controls.

How do you enable HDR and set the best refresh rate on your TV?

To get the most out of modern 4K HDR televisions (such as OLED and Mini-LED sets), verify that macOS is outputting an optimal digital signal:

1. Open System Settings › Displays and click your television.
2. Enable HDR: Toggle the switch marked High Dynamic Range to On. If the switch is missing or greyed out, verify that your TV’s HDMI port has its “Enhanced HDMI Format”, “HDMI Ultra HD Deep Color”, or “Signal Plus” setting enabled in the television’s setup menu.
3. Configure Resolution: Click the Resolution selector and ensure it is set to Default for display or explicitly choose 3840 × 2160.
4. Select Cinematic Refresh Rates: Standard television broadcasts run at 60 Hz, but theatrical films are shot at 24 frames per second (or 23.976 fps). Click the Refresh Rate dropdown menu. If your TV supports it, select 24 Hertz, 48 Hertz, or 120 Hertz. Selecting an integer multiple of 24 eliminates 3:2 pulldown judder during slow camera pans.

For detailed steps on configuring display frequencies, read our guide on how to change the refresh rate on a Mac. To check if your Mac hardware supports dynamic range metadata pass-through, see our guide on how to tell if your Mac supports HDR.

Why does the TV picture look cropped, oversaturated, or washed out?

If your Mac desktop appears blurry, edges of the menu bar are cut off, or dark scenes look milky, your television is applying legacy broadcast video processing.

Address these picture issues with three quick adjustments:

1. Fix Overscan Cropping

Televisions historically zoomed in on analog video signals by 2% to 5% to hide broadcast noise near the edges of the frame—a phenomenon known as overscan. When applied to a computer desktop, overscan cuts off the Apple menu and the Dock.

• The Fix: Using your TV remote, open Picture Settings › Aspect Ratio. Change the setting from 16:9 to Just Scan, 1:1 Pixel, Screen Fit, or Original. This instructs the TV to map each pixel from the Mac directly to a physical display pixel without cropping or interpolation.

2. Correct Washed Out Blacks and Color Range

If dark movie scenes look foggy or shadows appear grey, there is a mismatch between limited-range video (16–235) and full-range RGB graphics (0–255). Explore the technical background in our analysis of YCbCr vs RGB color spaces on Mac. Verify that your TV’s “HDMI Black Level” or “RGB Dynamic Range” is set to “Auto” or matches your Mac’s output signal.

3. Turn Off Motion Smoothing

Most televisions ship with motion interpolation (“TruMotion”, “Auto Motion Plus”, or “Action Smoothing”) turned on by default, creating an unnatural soap opera effect on cinematic films. In your TV picture settings, turn motion smoothing completely off or select “Filmmaker Mode”.

What is the best wireless alternative to an HDMI cable?

While a direct HDMI cable delivers uncompressed video bandwidth, zero input lag, and lossless audio, running a long cable across your living room floor is not always convenient.

If you prefer a cable-free experience, macOS supports wireless casting:

• Apple AirPlay: You can beam your Mac screen wirelessly to an Apple TV 4K or an AirPlay-compatible smart TV. To activate it, click the Control Center icon in your macOS menu bar, select Screen Mirroring, and click your television. AirPlay is ideal for slideshows and casual streaming, though high-bitrate 4K HDR movies may experience slight compression artifacts or buffer pauses over Wi-Fi. Learn more in our guide to AirPlay from Mac to TV.
• MacLC Play On (Beta): For local video files, MacLC provides an integrated Play On button. Rather than mirroring your entire desktop, MacLC packages the active video file as an HTTP Live Streaming (HLS) broadcast directly across your local network and beams it to your Apple TV or Google Chromecast, preserving native player controls and playback quality.

Enjoy cinema-grade viewing on your home television

Connecting an Apple Silicon Mac to a modern TV with an HDMI cable provides a reliable, high-bitrate home theater experience that rivals standalone streaming boxes. By choosing Extended desktop mode, assigning audio output in System Settings, and enabling 24 Hz film refresh rates with HDR, you ensure that every movie looks and sounds exactly as the director intended.