Channel Issues & Questions

Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
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Level 7

Roku ultra 4K Demo files


Can you share some demo files for Roku ultra? I have tried and some other from

i found none of them are playable with Roku media player. I have also tried to convert with handbrake (it has device profile for roku) Im still not able to play any 4k mkv.
All 1080p movies are ok.

Can somebody with the same player confirm?

Best regards
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Level 16

Re: Roku ultra 4K Demo files

I can play a number of 4K files I've downloaded without an issue. I did run into just one that I had to run through Handbrake. See this site for lots of demo material, or this one
I can play them on either my Ultra, my Sharp TV or my 4, although the HDR demos look pretty bad on the 4 since it's connected to a 1080 set without HDR support. But with the other two they look fantastic.
Roku Stick (3600), Ultra (4640), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.
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