I am not using "roScreen" in my application and I am not using any openGL APIs. I am not controlling rendering as well. So, I don't know how V-sync is getting affected. Is there any settings for choosing V-sync mode?
Can you provide the Co a URL to a sample video that causes the effect?
This issue is reproducible with any 4K@60fps stream.
Also, I am more interested about the "GetVideoMode" output. Why it is detecting the HDMI as 30fps? I think that is the root cause of the issue.
"It doesn't matter" [img=15x15]https://forums.roku.com/images/smilies/icon_smile.gif[/img] I mean Vsync-ing is a very low level thing in producing video signal (below roScreen, OGL, video decoding). It's not configurable. And if it's that and there were a way to disable the "adaptive" mode of Vsync - mind you that would be worse overall because it will decrease effective FPS.
I understand the annoyance when asked to provide sample for something "obvious" but it may help your case. Metaphorically, you know how "class lawsuits" cover everyone from a group? Well they still need a few real humans as "representatives" in the court proceedings, to represent the plaintiff class. The picture you showed is a simulated("fake") image from wikipedia, not the real effect - it would be good if there is something tangible for a Co' person to look at.
That is a good question, though that by itself would not cause tearing.
"kmayur" wrote:"RokuMarkn" wrote:
What do you have selected under Settings > Display Type?
Thank you, @Mark . We have tested with both 4K-8bit and 4K-10bit options under Settings > Display type. Please note, we are using 4K-8bit content for testing.
To give a brief note on our testing,
1) We have tested by connecting Roku to a different HDMI ports on the TV and also tested with different HDMI cables.
2) We have played the same 4K@60fps content on the same TV with a different media player device (Not Roku). It plays without any issues. So, it is not the issue with the HDMI port or HDMI cable.
3) We have also tried rebooting Roku while TV is switched ON.
Please let me know if you think any other tests to be done.