BabelSoft / 博语软件

8K WEBM files will crash Media Preview, tested in Windows 10. File explorer will hang if Media Preview attempts to thumbnail an 8K WEBM video file. "COM Surrogate" found to consume a large amount of memory and CPU time until the file is deleted.

Steps to reproduce: download this youtube video https://www.youtube.com/watch?v=6k7a8bw451M

with youtube-dl, https://ytdl-org.github.io/youtube-dl/index.html

it will generate an 8K resolution WEBM file. observe thumbnail behavior in windows file explorer.

Media Preview hasn't been optimised to process video files with such a big resolution. I suspect that it may be the case with some 4K video files as well. The issue here is that processing so many pixels at once takes a lot of time... So, some specific processing should be applied to shorten that. As I don't provide any updates on Media Preview anymore, sorry to say you're stuck with this issue.

If you really want to have a thumbnail, let it run, it should generate a thumbnail after a (long) while.