4K video not previewing when it used to?

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ArnieT00

Newbie Joined: Mar 31, 2019 15:18 Messages: 5 Offline

Solved by

Apr 03, 2019 10:43

Hello, I was working in 4k and was up to around an hour, it was previewing in HD flawlessly when suddenly it became choppy and lagging way too bad to use. I have found out that now when I open a new project all together and insert different 4K clips it’s still unusable so it's not project specific. I have also found that 1080p recordings are previewing just fine????
I’ve updated my GPU drivers trying to fix this issue, removed malware and uninstalled/reinstalled Power Director. I have copied the clips to a different drive and made Power Director access them there instead, thinking maybe it was a drive issue but still lagging.

My system is pretty good and was working fine so it can't be that. I'm completely at a loss with this and I've been working on fixing it for 3 days now. Please help I beg you. Thanks.

tomasc

Senior Contributor Joined: Aug 25, 2011 12:33 Messages: 6464 Offline

Apr 03, 2019 11:19

Looking at your DxDiag,txt the amd 390 gpu does not support h.265 and hdr. If the particular 4k video is 4k avc or h.264 encoded then it should be fine. If one of the clips is say 4k h.265 encoded then it would be choppy as you have experienced. See this post: https://forum.kodi.tv/showthread.php?tid=249976 and this one: https://forums.tomshardware.com/threads/hevc-h-265-support-in-new-amd-r9-300-series.2318844/ . You need to upgrade to a gtx 1060 at the minimum to have h.265 gpu decoding available.

You probably already have Enable hardware decoding checked in Preferences/Hardware acceleration and it made no difference.

You can check the video format of the particular 4k clips with MediaInfo to see which are encoded with h.264 and the ones encoded with h.265.