you’re likely looking at a or a debug output for generating a fresh public link to an MP4 file named Y2NSG4.mp4 with some parameter ( -3.15… ) possibly indicating a quality setting, timestamp, or version.
"file_id": "Y2NSG4.mp4_file_id_here"
Example script to generate new link:
Telegram -getnewlink Y2NSG4.mp4 -3.15...
