IME they're often a captured and streamed broadcast, say a Kansas City Chief's game as shown by 'your local' FOX affiliate in BFE, Oklahoma airing the afternoo

IME they're often a captured and streamed broadcast, say a Kansas City Chief's game as shown by 'your local' FOX affiliate in BFE, Oklahoma airing the afternoon game (including ads), rather than a re-share of the official online stream. I've even seen a few really chintzy ones that were just a webcam pointed at a tv, bootleg film style.