Fix error and download avfilter-6.dll

ERROR: The application could not start because avfilter-6.dll was not found.

ERROR: The entry point to the procedure avfilter-6.dll was not found.

ERROR: dllregisterserver entry point not found - how to fix avfilter-6.dll

How to register avfilter-6.dll in Windows

How to unregister a DLL?

Causes of errors in the file avfilter-6.dll