I've download again the ROM in my laptop and check de hash sha1 and I have gotten the same value as the file that is on my mi5 so I could think that's a false positive. Nevertheless, I've checked the file in virus total.com and all of you can see the results in the attached image.
Please, Radnou..double check your sha1 (you must have a different file version of miuvideo.apk as your sha1 differs from mine and I guess mine is correct...just in case).