Disclaimer: This post is for informational and cataloging purposes only. Please comply with all local laws regarding digital media.

ffmpeg -ss 10:00 -i input.mkv -t 00:23 output.mkv HZGD-177 refers to a specific title. The string ending in 10-23 Min confirms you are looking at a short clip rather than the feature film. Always check the runtime before assuming you have the complete work.