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[ppataki]

When I use VideoClock (which changes the Tempo in the Tempo & Pitch DSP item) the sound becomes strange, as if there was a flutter effect on it
The picture becomes really nice and fluid but the audio becomes unlistenable, making VideoClock pretty useless
Do others have the same experience?
Are there any plans to fix this?
Thank you

[JimH]

Any movie?  Or just a few?  More details might help.  Machine, OS, types of files, etc.

It's probably not a Videoclock problem.

[ppataki]

It is for all the movies
I am using Windows 11 64-bit, playing 4K HDR mkv files with multichannel audio
CPU is Intel i5-13400, GTX1660 Super GPU and using RME Digiface USB as the sound card

I am happy to make some videos about the issue too if it helps

Thank you

[JimH]

NVIDIA has had some driver problems. 

The NVIDIA software has power settings.  Try changing them.

Try toggling the Hardware Acceleration setting in MC.

Are the files on a NAS or USB drive?  Try local files.  Those are very big files.

[ppataki]

I play local files (from SSD)
I have updated to the latest Nvidia drivers but could not find the power settings
I have tried toggling the Hardware Acceleration in JRiver
The issue remains

I was wondering, maybe the fact that Tempo is changed like this (attached) naturally causes the sound to become funky?

[tzr916]

...latest Nvidia drivers but could not find the power settings...

https://nvidia.custhelp.com/app/answers/detail/a_id/3130/~/setting-power-management-mode-from-adaptive-to-maximum-performance

[JimH]

"dropped frames" problem here:  https://yabb.jriver.com/interact/index.php/topic,24031.350.html

Also, the latest driver is not always the best driver.

[Hendrik]

1.05x rate change is quite large already for VideoClock, how off is your refresh rate?
Usually you are looking at like 0.1% rate changes, not 5%.

[ppataki]

https://nvidia.custhelp.com/app/answers/detail/a_id/3130/~/setting-power-management-mode-from-adaptive-to-maximum-performance

Thank you
I have tried it but the issue is still there

1.05x rate change is quite large already for VideoClock, how off is your refresh rate?
Usually you are looking at like 0.1% rate changes, not 5%.

I just realized that if I change the refresh rate to 25Hz (or 50Hz) for a 23.976 movie and enable VideoClock then the video motion will be more fluid vs switching the refresh rate to 23.976Hz (visually the effect is very similar to madVR's frame blending feature btw)
But unfortunately the sound gets a bit weird, probably because of the 5% change being too large
I wonder if there is a solution though
Thank you

[JimH]

https://yabb.jriver.com/interact/index.php/topic,136395.msg944765.html#msg944765

[tzr916]

What is your display? Maybe try using "auto mode change" in MC = Tools > Options > Video > Display Settings > auto mode change = On (or custom).