It may be a short clip or "piece" from a 2019 equestrian event or a stock footage snippet of a black horse, many of which were uploaded or tagged around that specific timeframe.
Based on the date , and the title, this file likely refers to one of the following: 흑마_20190714.mp4
"Black Horse" (흑마) was a popular term used in Korean social circles and gaming communities (like World of Warcraft ) during mid-2019. It may be a short clip or "piece"
Did you find this file in a (e.g., a gaming forum or a K-pop archive)? and the title
I can help further if you provide more context on where the file originated!
If you are looking for a or dialogue from this specific file, please clarify: