VLC unable to properly play a 10bit x265 video file

[chimpfunkz]

Basically, I'm trying to watch a video file that was encoded using x265/10bit, and it will play when I open it. The problem is I am unable to track or do anything with the file. If I try to skip ahead, it doesn't let me. I can't even check how much time is remaining, since it doesn't let me see. I am using the latest version of VLC too. Occaionally, during fast movement scenes, the screen will also get super pixelated and blurry so maybe the computer just can't handle the encoding? I don't really know what is the problem.

[Lotesdelere]

You gave absolutely no information about your OS and your hardware.

Assuming you are using Vista or higher and a DXVA 2.0 compatible graphics card, try to enable hardware acceleration:
https://forum.videolan.org/viewtopic.php?f=14&t=79953

And if you are using a 64bit OS you should try the latest VLC 3.0.0 x64 nightly build:
http://nightlies.videolan.org/build/win64/?C=M;O=D

[MacEachaidh]

Thanks for your suggestions, Lotesdelere.

I'm observing behaviour the OP's description seems to fit on Windows 7 x64 in VLC 2.2.4, with an nVidia GeForce GT 740 2 GB and the latest vendor display drivers. I use only the standard driver, without all the games-related utilities installed.

Changing the hardware acceleration setting doesn't appear to make any difference. The videos I have problems still have problems like the OP described in VLC, but play fine in PowerDVD 16. I assumed it may be to do with the application they were first encoded in, since I'm not assuming all x265 implementations are the same at this early stage.

[Lotesdelere]

Only very recent graphics cards support hardware acceleration for H.265/HEVC.
Check your card with this tool:
http://bluesky23.yukishigure.com/en/DXVAChecker.html

Otherwise decoding is done in software mode which requires a LOT of CPU power.

[MacEachaidh]

Yes I understand, Lotesdelere. But as I said, they play (and FF/step forward) in PowerDVD, which itself gobbles up considerably more resources than VLC does.