
If you're connecting using a Mini DisplayPort adapter, make sure that your Mac can send audio over Mini DisplayPort.In the Output pane, make sure that your HDMI device is selected. Choose Apple menu > System Preferences, then click Sound.If your HDMI device isn't receiving audio from your Mac: If your keyboard has brightness controls, press Option–Brightness Up or Option–Brightness Down.Then double-click System Preferences, then click Displays. Press Shift-Command-A to open the Applications folder.

Choose Apple () menu > System Preferences, then click Displays.Use any of these methods to open Displays preferences: 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. Unplug the HDMI cable from your Mac, then plug it in again.Turn off the HDMI device while your Mac is turned on.If your Mac doesn't recognize your HDTV, display, or other HDMI device after making the connection:

If using an adapter, check the specifications of the adapter to learn about supported resolutions and other details. 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. HDCP-encrypted playback from iTunes and QuickTime Player (version 10).8-channel/24-bit audio at 192kHz, Dolby Surround 5.1, and traditional stereo.
HDMI CONVERTER FOR MAC NOT WORKING 1080P
HDMI CONVERTER FOR MAC NOT WORKING HOW TO
Learn how to identify the ports on your Mac.

Mac computers that have any of the following ports can connect to HDMI devices.
