It also adds it's own special brand of crap .. as in after trying 10x different ways (not kidding: https://social.technet.microsoft.com/wiki/contents/articles/...) of executing an external ffmpeg command over several hrs I eventually wrote a one line .bat file* and was done with it. Never again.

* for %%a in ("*.mp4") do ffmpeg -i "%%a" -vcodec libx265 -crf 26 -tune animation "%%~na.mkv"