I have done a search but couldn't find a topic on this issue.
I would like to report a bug: Roku 2 outputs at 60.000Hz refresh rate instead of the standard 59.94Hz rate required to play back 29.97 fps video content from Netflix and Amazon without judder.
This is similar to the problem that Intel Sandybridge processors had
, only that was 24.000 vs 23.976, resulting in a stutter every 41.66 seconds. In this case it's 1 / (60.000 - 59.940) = 1 frame repeated every 16.7 seconds.
I was thinking that perhaps this is also the reason some people are still experiencing issues with the video levels after the latest update. Maybe some displays assume that a 60.0 fps integer framerate would only come from a PC and apply PC levels rather than TV levels.To reproduce the problem on Roku 2 connected by HDMI to an HDTV with no "motion smoothing" functions enabled:
1. Add the private channel "1080p Showcase"
2. Open 1080p Showcase on the Roku and choose Search
3. Type in "rokutest" and hit Search
4. Play "rokutest 1080p HD" and focus on the white bar at the bottom moving from left to right
This is a 20 second clip, so depending on what point in time you start playing the video, you should see the bar stutter either once or twice.
Roku 1 set to output at 720p (59.94) is able to play this video with zero stutters (there are multiple stutters if 1080p30 output is enabled on Roku 1; I'm not sure the reason for that). On Roku 2 it doesn't matter what resolution you choose because it will always output at 60.0 fps.
I am using firmware 4.1 build 2667 with a Roku 2 XD.