The video plays perfectly at first, but if you switch to full-screen mode, the video becomes pixelated or gets pixels flashing. This issue occurs even if your video card drivers are up to date. You’d have thought that the VLC pixelated MP4/MKV is from the video, but it’s not. This is because the video plays fine in full screen on other players, such as Windows Media Player. The following solutions have fixed the VLC pixelation issues for other users.
How can I fix the VLC pixelated video issue?
1. Fast forward or backward the playback
You can fix VLC pixelation issues by simply jumping a few seconds back or forward. This solution will not fix the issue permanently, but it will clear the VLC pixelated gray screen for the moment. To jump front or back, simply click on the progress bar and dragging the indicator back or front a couple of seconds. You can also click on the time you want to jump to instead of dragging the indicator to that point. Alternatively, you can use the SHIFT + directional keys combination to fast forward or fast backward the playback.
2. Disable hardware-accelerated decoding
3. Change the VLC buffer settings
4. Enable OpenGL video output
Apart from the VLC pixelation issues, another common problem with this media player is when your videos lag on Windows 10. There’s no official fix for VLC pixelated videos, but the solutions in this guide will resolve the problem quickly.
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