Here’s the actual signal chain:
Here’s the real story of what happens when you try to pull 1080p video off a dying magnetic tape format and "upload" it to the modern world. First, let’s kill a myth. HDCAM (and its superior sibling, HDCAM SR) is a cassette. It’s Sony’s professional HD format that dominated TV production from the early 2000s until about 2015. Season 03 of your show was likely shot on HDCAM SR (SQ or HQ codec).
Here’s a blog-style post exploring the technical and logistical reality of uploading HDCAM tapes (specifically the SR version, given “S03” likely refers to a season of a show mastered on HDCAM SR).
If you’re working on remastering or simply archiving a show from the mid-2000s to early 2010s—let's call it Season 03 of a cult drama—you’ve probably heard the phrase: "We just need to upload the HDCAM tapes."