-- NOT OP --
In the general case, no, but consider the cases of:
1. "Altered media" e.g. (1) Star Wars, (2) THX 1138.
2. "Remixed media" e.g. (1) Terminator 2 not having its theatrical CDS mix, (2) Earthquake not having its SENSURROUND mix
3. "Omitted media" e.g. (1) Halloween not having its original mono soundtrack, (2) The Exorcist not having its original mono soundtrack
4. "Missing media" e.g. (1) The Star Wars Holiday Special, (2) HBO's "Real Sex" documentary show
5. "Censored media" e.g. (1) Fantasia, (2) Song of the South
There are entire online communities dedicated to finding, restoring, and preserving items like the ones mentioned above.
So, is piracy OK in these cases? I emphatically believe it is.