Devices > Video Cards, Monitors, Televisions, and Projectors
4k, judder, etc...
fitbrit:
--- Quote from: muzicman0 on April 07, 2015, 02:49:30 pm ---Thanks.
Hardware is (currently) Intel i7 (Sandy Bridge), with an Nvidia GTX960 running at 3840x2160 @ 60FPS. Also saw this on PC running 1080p @ 60FPS. The TV does have a 'film mode' that is set to auto currently.
I have tried it with both RO Std and RO HQ, and have seen it on both. I am currently using RO HQ.
I do not have auto refresh rates in MC, unless it is default...
It appears that all of my content (recorded TV) per the FPS tag is either 29.97 or 59.94 FPS.
I will time the stuttering tonight and see...it is so subtle that I hope I can get an accurate reading.
Thanks again!
--- End quote ---
Thanks for this info. Best to proceed making one change at a time. The problem may be the discrepancy between 29.97 or 59.94 fps and the 60 Hz refresh rate. On top of that, I am not sure what the TV's film mode is - it could just be a picture preset (brightness, contrast, saturation etc.), or it could be trying to do 23.976 Hz. If the latter, it may be compounding the problem.
If I am correct, you will see the judder every 16-17 seconds or 33-34 seconds depending on the fps of the original material.
As countrybumkin suggests, you may wish to turn on automatic refresh rate changing in the settings. We may need to help you customise this to tweak it optimally. However, before you try that, you may like to turn on ROHQ and then in the MadVR settings:
Under rendering>Smoothing> Try activating smoothing to always on.
MadVR settings can be reached by right clicking on a playing video and looking in the directshow filters pop-up menu.
If this helps, then we can go from there with a more elegant solution.
muzicman0:
Thanks so much guys! I will try this tonight and get back to you.
To further complicate this, the current TV has a problem with Netflix, so I am having to swap it out again, but the picture is really good, and a 50" 4k for $699 is hard to pass up! The first one Netflix did work on, and 4k streaming from netflix looked amazing!
muzicman0:
So did some testing tonight, and nothing seems to help. Tried the smoothing in RO HQ, and that didn't fix it, tried the Display setting, and that didn't work. Turned of film mode (which changes the TV to better accept 24 FPS), and that didn't help.
Not sure what to do.
I tried to figure out how long between the jitter, and it was really hard...sometimes it was 13 seconds, and sometimes it seemed like it was a couple minutes.
I checked a Blu-Ray rip that was 23.9xx FPS, and while it might have happened, it was much less noticable, and I wasn't completely sure, but it was for sure happening on interlaced TV recordings.
6233638:
Once playback starts with ROHQ, hit CTRL+J to bring up the stats window, and then CTRL+R to reset the stats.
You can then hide them again if you want.
After this stuttering occurs, bring up the stats again and see if your dropped/delayed frame count is anything higher than zero.
muzicman0:
0 of both after repeated jitter.
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