Canon EOS R6 Advanced User Guide - Page 352

Caution HDMI output without information prevents display of warnings about the card space, battery level, or high internal temperature ( ) via HDMI. During HDMI output, display of the next image may take some time if you switch between movies of different recording qualities or frame rates. Avoid operating the camera when recording movies to external devices, which may cause information to be displayed in the HDMI video output. Brightness and color of movies recorded with the camera may look different from that of HDMI video output recorded by external devices, depending on the viewing environment. Note By pressing the < > button, you can change the information displayed. Time codes can be added to HDMI video output ( ). Audio is also output via HDMI, except when [Sound rec.] is set to [Disable]. 352