Video tape isn’t really that durable over time. Most of the info I can find comes from digitization services, but they are fairly consistent in saying that, for tapes that are stored in “normal” conditions, you can expect 10-25% degradation in 20 years. These tapes are 40 years old. They have likely degraded significantly already and may fall apart when played.
And SCOTUS will grant cert, schedule argument for January 21st, the declare the case moot after Trump pardons himself. They’ll then agree that self pardons aren’t even required because a president can’t be held criminally liable for anything. Finally, they will stand behind Trump’s throne and reveal themselves to be the Nazgul.