08-11-2018 12:32 PM - edited 08-11-2018 12:35 PM
He told everyone he would find an answer and get back to us on this post... as you can see... he lied. GoPro won't be around for much longer, folks (maybe another year or two). These "customer service representatives," will purposely mislead you if they don't have an answer or if they aren't allowed to give you one. On top of that, they don't even have the technical expertise most of us do. They are dishonest, and incompetent. Moreover - they know the answer to this question... it's an easy to get answer if you work for GoPro. But they don't care to give it to us. If you want 4K HDMI OUT (while sacrificing internal 4K), I suggest the Sony RXO.
11-06-2018 12:20 PM
We finally have information on this case. Based on this article, HDMI output supports live preview of up to 1080p - 60 fps output when the camera is idle, and up to 720p when the camera is recording. Output of up to 4K,using HDMI, is supported only for playback for recorded media.
11-06-2018 02:36 PM
Thank you for your answer :-) It should be noted that the article being referenced is incorrect with regard to the Hero5 Black. The Hero5 Black can output 2160p/30 live when idle (an extremely useful feature) but the article implies that it tops out at 1080p/60 as well. This is the main source of confusion as many customers who have the Hero5 are expecting the same capability on the newer models - those that still have HDMI ports anyway.
It might be helpful to include a live HDMI resolution chart for each camera in order to make the article more informative. It should read that a maximum of 720p can be output during 4K recording but it depends on the camera. Hero5 Black will output max 480p during 4K recording, and if Hero7 Black is set to 4K/60 the HDMI output also drops to 480p during recording. I'm speaking just about the article of course :-) your wording of 'up to' 720p is quite correct. Thanks again for the info.