It's possible this is:
To: xxxmmsubcom_tme_sub1_nima_20200317_m4v_v2.m4v (Here I assumed the date was 03/17/2020 and chosen a version tag v2 instead of "updated".) xxxmmsubcom tme xxxmmsub1 nima031720m4v updated
When an asset like tme nima031720m4v is updated, smart contracts could automatically recalculate residuals. Did the update add a new language track? That dubbing artist gets paid. Did it remove a licensed song? The royalty split changes. very similar to the MP4 format.
: The industry is generally categorized into Print, Broadcast, Internet, and Out-of-Home channels. xxxmmsubcom tme xxxmmsub1 nima031720m4v updated
: This likely represents a timestamp or specific identifier. "031720" could correspond to March 17, 2020 : This is a standard video file format developed by Apple, very similar to the MP4 format.