Windows 10: Windows 11 low performance on 10bit HEVC Video playback

Before replying, please do not ask me to install VLC or any codec pack. I have installed the HEVC codecs from Microsoft Store, the 0.99 cent codec pack. As far as I can tell, windows still can't open Canon's H265 video files, 4K HEVC 10bit 4:2:2.The performance is bad even with DaVinci Resolve Studio which on the fruit computers does not require the Studio version to have HEVC workingPlayback is impossible, all updates are made on Windows 11 up to the date of this post, my Nvidia RTX 3060 is up to date and now running on Nvidia Studio Driver pack. I can't work with video files over 1080p res

:)

 

Directories with HEVC/x265 or Hi10p/10bit video sluggish

I couldn't find an answer or solution to this problem. Not sure if anyone else bothered to report this, but I am experiencing horrible sluggishness when accessing a directory with HEVC/x265 or Hi10p/10bit videos. It also occurs when trying to move or copy HEVC/x265
or Hi10p/10bit videos. MPEG2/4 and x264 videos do not have this issue. It appears Windows is doing some type of analysis or verification of the HEVC/x265 or Hi10p/10bit videos that slows it down. Any solution or fix to this? Do I need a video card with a hardware
decoder for HEVC/x265 or Hi10p/10bit videos to have the sluggishness go away? Or does Microsoft need to have a Windows update to better recognize HEVC/x265 or Hi10p/10bit videos?

Thanks.

James

 

Directories with HEVC/x265 or Hi10p/10bit video sluggish

Issue is and is not resolved.

Tried the following:

When googled for similar situation, someone said to update VLC. Did that and it didn't make a difference.

@Sam mentioned it may be trying to create icon thumbnails (not the generic ones, like the VLC cone, but an actual picture like an album cover title). This makes some sense because if the video is not x265/hevc or 10bit/hi10p, I do get thumbnail images. It makes
me think that whatever code Microsoft uses to grab a snapshot/title out of the video file when you display a video directory, it doesn't know how to find it in an x265/hevc or 10bit/hi10p file. If this is the case, Microsoft needs to do an update on the code
because there are going to be a lot more x265/hevc and 10bit/hi10p now that 4k/UHD is taking off.

Doesn't matter if I have one x265/hevc or 10bit/hi10p file in a directory or hundreds or mixed with x264, still get the issue.

I followed the link @Sam gave but it was not clear how to turn off the thumbnail image creation process. I actually found it in File Explorer Options under View tab: check box next to "Always show icons, never thumbnails". THIS WORKED!

BUT - I want thumbnails. So do I tolerate File Managers sluggish-ness with x265/hevc or 10bit/hi10p files so I can have thumbs everywhere else or do I disable thumbs for everything???

Still looking for an solution without needing to disable thumbnails.

Thanks.

 

Directories with HEVC/x265 or Hi10p/10bit video sluggish

Looks like Microsoft may have resolved the problem in the latest update, 1709, also called the Fall Creators Update. I did not install Icaros like some of you did or disable thumbnails, I stubbornly preferred MS to resolve the issue. I am pretty sure I did
not install anything else that would have sped up moving HEVC/x265 or Hi10p/10bit videos or speeding up folder views of HEVC/x265 or Hi10p/10bit videos.

It was suspected that it had to do with thumbnail generation and that MS didn't update the process to recognize HEVC/x265 or Hi10p/10bit videos in mp4 or mkv containers. This caused "COM Surrogate" to start eating large amounts of CPU usage. "COM
Surrogate" is the process that extracts the thumbnails for videos and pictures.

It is possible that this process was updated to include recognition of these files, but no developer from Microsoft has come forward to confirm this.

All I can say, is that the issue has been resolved for me and I believe it came from the Fall Creators Update, 1709.