AVI files locked and can't be deleted (Logitech webcam codec)

It looks like C:\Windows\System32\lvcod64.dll may be the crashing component.

This looks like a splitter/codec DLL which is part of Logitech's webcam software, and it's being tried when Opus asks for information on the AVI file. It looks like it may be crashing and taking out the thread which is running the query, which is in turn leaving file handles open, but it doesn't take out the whole process.

There are reports of the same DLL crashing other software:

Renaming the DLL is said to stop it causing problems, although that may also mean something else breaks.

(This is all somewhat guesswork, based on the log events and which DLLs were being loaded at the time of different operations on different threads, but the fact it has also crashed other software means there's a good chance it is the issue here.)

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