I've got a 2010 13' Macbook Pro with 4GB of RAM, 2.4GHz Intel Core 2 Duo Processor and im trying to connect it via HDMI to an external monitor. The problem Im having is that under the Display tab in System Preferences, the Underscan/Overscan bar is grayed-out and I can't adjust it at all. Underscan/Overscan is specifically an HDMI thing, as far as macOS is concerned. I dug through the workings of the core frameworks responsible for display manipulation like two years ago and there was no way to accomplish what you're after. Like it's just not supported. I currently have a Mac mini (two generations old) hooked up to my 1080p HDTV. I tried battling the underscan/overscan issue that some people experience and never found a solution that worked. I know this is a little early to be asking the question, but I'm wondering if anyone had.
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Overscan
Overscan refers to a cropped image on your TV screen. Here are some examples:
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- A setting on your TV zooms in on movie content, so that you can't see the outermost edges of the film.
- Your TV's plastic border blocks some of the TV screen, so that you can't see the edges of the content.
Underscan
Underscan is usually intended, and refers to black bars that appear around a movie or show. The bars appear because the content was filmed in a different proportion than your TV screen. Here are some examples:
- Black bars appear above and below a movie because it has a wider aspect ratio than your TV screen.
- Black bars appear left and right of a TV show, because it has a smaller aspect ratio than your TV screen.
Adjust the screen size
When viewing content from your Mac or iOS device on your TV or projector, you can adjust the screen size to fit your TV or projector. You can look for these settings on your Mac, your Apple TV, or in the menu of your TV or projector.
Adjust from the menu on your Mac
While mirroring your Mac to a TV or projector, go to System Preferences > Displays. Mac file synchronization software review. From here, you can use the slider to adjust the overscan or underscan setting.
If you see an option to change the screen resolution, you can choose the one that matches the dimensions of your TV or projector. If necessary, check your TV or projector's manual to find the display resolution.
Adjust from the menu on your Apple TV
While using AirPlay to watch content from your Mac or iOS device on your TV or projector, you can adjust the size of the picture in the Settings menu of your Apple TV.
- On Apple TV 4K or Apple TV HD, go to Settings > AirPlay > AirPlay Display Underscan.
- On Apple TV (2nd or 3rd Generation), go to Settings > Audio & Video > Adjust for AirPlay Overscan.
Adjust from the menu on your TV or projector
Some TVs and projectors let you adjust overscan or underscan from a settings menu or button on your remote. Look for a Zoom button or check your TV or projector for a menu called Aspect Ratio, presentation mode, computer mode, or a similar setting. Broker metrics download for mac. Nexus 3 free download mac.
For more help, check the manual that came with your TV or projector or contact the manufacturer.
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Learn more
Mac computers that have any of the following ports can connect to HDMI devices. Learn how to identify the ports on your Mac.
- HDMI port: Connects directly to HDMI using an HDMI cable.
- USB-C or Thunderbolt 3 (USB-C) port: Connects to HDMI using an adaptor, such as the Apple USB-C Digital AV Multiport Adaptor.
- Mini DisplayPort: Connects to HDMI using a third-party Mini DisplayPort to HDMI adaptor or cable.
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Mac computers that have an HDMI port comply with HDMI 1.4b and support:
- At least 1080p video over HDMI, and some Mac models support higher resolutions when connecting to 4K displays, 5K displays and Ultra HD TVs
- 8-channel/24-bit audio at 192kHz, Dolby Surround 5.1 and traditional stereo
- HDCP-encrypted playback from iTunes and QuickTime Player (version 10). Safari in macOS Sierra or later also supports HDCP-encrypted playback, if the web page is HTML5-enabled and the content is FairPlay Streaming-enabled and delivered using Media Source Extensions or HTTP Live Streaming.
If using an adaptor, check the specifications of the adaptor to learn about supported resolutions and other details.
After making the connection
If your Mac doesn't recognise your HDTV, display or other HDMI device after making the connection:
- Turn off the HDMI device while your Mac is turned on.
- Unplug the HDMI cable from your Mac, then plug it in again.
- Turn on the HDMI device.
If the video on your HDTV or display extends beyond the borders of the screen, open Displays preferences and adjust the Underscan slider for a better fit. Use any of these methods to open Displays preferences:
- Choose Apple () menu > System Preferences, then click Displays.
- Press Shift-Command-A to open the Applications folder. Then double-click System Preferences, then click Displays.
- If your keyboard has brightness controls, press Option–Brightness Up or Option–Brightness Down.
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Mac apps stop opening. If your HDMI device isn't receiving audio from your Mac:
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- Choose Apple menu > System Preferences, then click Sound. In the Output pane, make sure that your HDMI device is selected.
- If you're connecting using a Mini DisplayPort adaptor, make sure that your Mac can send audio over Mini DisplayPort.
- If you're connecting from a Mac mini, unplug any audio device that is plugged into your computer's Audio-Out port.
If your Mac goes to sleep while a video is playing or paused, you might see an HDCP error. Quit the app that is playing the video, then open the app again. If the issue continues, choose Apple menu > System Preferences, then click Energy Saver and adjust the settings so that your display doesn't turn off.
Learn more
- If your Mac has an HDMI port, you can use the Apple HDMI to DVI Adaptor to connect to a DVI display.
- Mac computers don't support using CEC (Consumer Electronics Control) to control HDMI devices.