Preview screen error

[miku1958]

I have a lot of issues to go through, so in order to make it easier for me to help you, I ask that you please try these things first

• [X] Try with the newest version from GitHub
• [X] Read the documentation and FAQ, Known issues, Troubleshooting
• [X] Search for your problem under Issues or Discussions
• [X] If you have an issue only with one particular file, use this form instead

Operating System

Windows 10

Steps to reproduce

1. make a record video with different tools(Mumu enmulator, GeForce Experience)
2. try edit it with LLC

Expected behavior

preview screen is normal

Actual behavior

preview screen has error, out put video is normal

the preview screen become noraml when I try to output the file

Share log

No response

[mifi]

Hi. Where is the error? can you share a sample file?

[miku1958]

Can you see the screenshot? The preview imge should be like this:

[miku1958]

I am not sure why, I try different video and their preview are all broken.

[mifi]

can you provide more info about your file? See questions here https://github.com/mifi/lossless-cut/issues/new?assignees=&labels=&template=file-issue.yml

does it work on a different computer? or a different file?

[miku1958]

The previews of the different files are broken.

[raidiuss]

I'm having this same issue, i open a video with lossless cut and it has that weird flickery dark blue and red glitch in the preview of every video i try to edit. i had to go all the way back to version 3.44.0 and download the exe just to get a working version.

[mifi]

does it happen on a different computer? what's your OS?

[miku1958]

I don't have another computer. Windows 10 20H2 19045.2486

[mifi]

what about other type of file? h264, h265, something else?

[miku1958]

I tried h264, h265, h264 with HDR, they all have the same issues.

[mifi]

so it only happens with HDR files? what about non-hdr files?

[mifi]

oops sorrry i misread. so it happens with all files you drag into losslesscut....

[miku1958]

Yes, all files

[mifi]

what if you click File -> Convert to supported format -> Fastest: Low playback speed (no audio) same problem?

[miku1958]

let me try

[miku1958]

It shows: File not natively supported. Preview may have no audio or low quality. The final export will however be lossless with audio. You may convert it from the menu for a better preview with audio.

Then the color of preview become normal but the preview is blur.

[mifi]

What happens if you open Chrome browser and then drag-drop one of the vidoe files into chrome? same problem?

[miku1958]

It looks normal, the color is correct

[mifi]

very strange. new version of losslesscut coming out soon. hopefully it will resolve the problem..

[miku1958]

I try to make a record about how it looks like in lossless-cut, but I found that if I wait long enough, the preview becomes normal afterwards, but at this point the preview lags very badly.

Then I thought it was "Auto convert to supported format"'s problem and turn it off but the preview still error when opening and becomes normal but laggy after wait for a while.

[mifi]

Lagging preview is a know problem with «convert to supported format». Hope to improve it in the future

[HurricAngel]

I ran into the same issue and it has lasted for several versions now. I discovered that if you rename/remove libEGL.dll and libGLESv2.dll the preview will go back to normal. Not sure what exactly does those two files do so I made a folder and put them there in case I need them to have losslesscut work properly.

[puppysnuff]

I ran into the same issue and it has lasted for several versions now. I discovered that if you rename/remove libEGL.dll and libGLESv2.dll the preview will go back to normal. Not sure what exactly does those two files do so I made a folder and put them there in case I need them to have losslesscut work properly.

This worked for me as well.

Windows 11 editing an MP4 file

[mifi]

haven't heard any more reports of this so i'll close