Its part of MP with MP1-4777 ... MediaInfo.Wrapper.dll search for MediaInfo.dll in MediaPortal\x86 folder ...I'm not sure why you have it @ajs, this is not normal, I'm pretty sure it is related to project release/debug from VS Studio that put binaries into those 2 folders but this is not correct.
[2019-10-10 19:08:06,942] [Log ] [MPMain ] [DEBUG] - Check MediaInfo.dll from .\x86.
[2019-10-10 19:08:06,942] [Log ] [MPMain ] [WARN ] - Library MediaInfo.dll was not found at .\x86
[2019-10-08 17:23:57,756] [Log ] [MPMain ] [DEBUG] - Check MediaInfo.dll from .\x86.
[2019-10-08 17:23:57,756] [Log ] [MPMain ] [WARN ] - Library MediaInfo.dll was not found at .\x86
[2019-10-08 17:23:57,757] [Log ] [MPMain ] [DEBUG] - Check MediaInfo.dll from .\.