Olympics Enhanced 4K

Hey @BIslander, Thank you for visiting our official Xfinity Forums Community support page. We greatly appreciate you taking the time to share your experience regarding the Paris 2024 Olympic games. I would be more than happy to offer my assistance looking into this further for you.

Xfinity is proud to bring every minute, every medal, and every moment of inspiration from Team USA and the Olympic and Paralympic Games Paris 2024. Xfinity customers' can watch every moment of the Olympic and Paralympic Games starting July 26 on X1, Xfinity Stream app, NOW TV, Peacock, Xumo Stream Box, and Xfinity Flex. 

In order to receive enhanced 4K and sound, you would need an eligible X1 set-top box. You would be unable to access enhanced audio and visual with the Xfinity Stream App.

I have an eligible X1 set-top box and the 4k image has about the same resolution as an HD broadcast, and the colors are significantly muted as compared to HD. Just another swing and a miss by Xfinity. Would complain but it does not good. 

@jo_albert I have two XG1v4 4K boxes and one of the has dropped back to washed out SDR on the USA4K channel a couple of times.   Restarting the box has fixed it every time.

My Sony A90J does not autoswitch to correct HDR color setting, when tuning the SG1v4 box to 1350 or 3814, regardless of "Picture Mode" the Sony picks, and even though Sony's HDR Mode=Auto.

So 4k initially looks flat, washed out, low contrast (typical for ungraded log profile.)
I have to go into the Sony's Picture Settings/Video Signal/HDR Mode: HDR10 (versus Auto.) Looks good (for upscaled HD, which is what all Olympic 4k feeds are.)

This is a global setting across all of the Sony's Picture Modes, so I can't set it just in Custom picture mode, for example, to have less menus to wade through to switch.
When I go back to any regular HD channel, I have to switch Sony's HDR Mode: Auto. Otherwise it looks dark and oversaturated.

I am going through an Onkyo TX-NR7100 receiver, with HDMI 2.3 ports. But perhaps it is stripping out some HDR mode flag, though still passing HDR data through.

and p.s, someone in an AVS Forum thinks 3814 occasionally has higher bit rate, when "enhanced" appears in description. That is the "enhanced" signal. Not on all program blocks though, and I have yet to see it. 

@jo_albert​ Interestingly enough, tonight I turned on the lyrics again to channel 1350 and now voila, I have a really nice 4k signal with Atmos sound! Now I think they only broadcast the higher quality during prime time. I will check it out again early tomorrow morning to see if the signal is degraded again. 

Please accept my most sincere apology for the experience you have encountered @BIslander. Enhanced 4K is not available on the Xfinity Stream App, and would require an eligible X1 set-top box. (XG1v4 or Xi6). While your devices may support Dolby Atmos, I am showing we only support it on Xfinity X1 device.

@XfinityJK 

Thanks.  That's all about 4K video, not audio.  I am getting 4K HDR on my X1 boxes, along with Atmos audio, and 4K Dolby Vision on Xfinity Stream.  But, the audio on Stream is only stereo, not 5.1 or Atmos, from both of my streaming devices, Fire Cube 3rd Generation and Roku Ultra LT.