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Old 2nd February 2017, 04:18   #6  |  Link
Asmodian
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Join Date: Feb 2002
Location: San Jose, California
Posts: 4,406
Quote:
Originally Posted by itsnotme View Post
Thanks.
How much dropped frames is considered normal?
Also, what else should I check in OSD?

About DXVA2-copyback, if it's the same, is there a reason to go with it?
DXVA2-copyback works better and is more maintained now, it takes less resources and power to run. There are some odd issues with CUVID and it hasn't been debugged to the same degree because DXVA2 is the universal solution that everyone's drivers work properly with. Some versions of Nvidia's drivers messed up CUVID too.

Dropped frames, even 10s of them, are normal when starting playback or seeking but you need to have 0 dropped frames while watching normally. You can use ctrl-r to reset the OSD after starting playback.

On Screen Display
Toggle the On Screen Display by pressing Ctrl-J.

To avoid dropped frames and/or presentation glitches the sum of the average stats "deinterlace" (if present), "rendering", and "present" must be a bit below the frame time, Y, in the line "v-sync [X] ms, frame [Y] ms". For example, progressive 29.97 fps video has a new frame every 33.37 ms so "rendering"+"present" needs to be a few ms below 33.37 ms. However, 23.976 fps video only has a new frame every 41.71 ms so you can use more demanding settings with lower frame rate video. Exactly how far below the frame time is required for glitch free playback is dependent on the system but a few milliseconds is usually sufficient.

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