The file you are looking at is the time shift buffer file (0.ts). When you watch a channel live this file gets overwritten starting from the beginning, it’s this file that gives you the live pause and rewind capability. It’s not likely to have any content remaining by now of the opening ceremony.
It contains HD without encryption so can be played back on a PC.
If you have Samba installed and have the Foxsat HDD drive mapped in Windows you may be able to play it back directly from the HDD.
In my case VLC is very stuttery but Nero Kwick Media will play it back OK.
If there’s any content you want to keep, then AV2HDR should be able to convert to a standard recording.