[rasur]

It depends on the hashing method, above all.

A cheap-and-nasty MD5 (for example) of the exact same film stored in different file formats will yield different hashes.

A more sophisticated hashing methodology (for example something akin to the audio-fingerprinting tech used by Shazam) might yield a match.

[Sumaso]

Might doesn't sound like I have the right to remove someone's potentially pirated movie.

Could have MegaUpload have done more to prevent pirated movies from being uploaded on their servers? Maybe, maybe not.

Should they still be protected by the DCMA? IMHO, I think so.

[rasur]

I agree - "might" does not cut it for me either, but these are political games being played, not technical.

Could MU have prevented "piracy" by blocking uploads of copyrighted material? Again, I'm inclined to agree with you and say "DMCA", there are too many privacy issues involved for sites to go jack-booting their way through everyones files (which again, Kim D-C mentioned in the video), especially when he's holding out an olive branch to the content companies by allowing them to delete millions of "illegal" files without any due-process.

[unseen]

Most people wouldn't ever upload anything illegal directly anyway. They compress it, split it up and then put a password on the whole thing. Theres no way to tell whats in the files then. MegaUpload was already going way beyond DMCA by letting them delete everything per their wishes.