Tamper-proof watermark threatens to put digital pirates out to sea

[ThePuska]

If the watermarking technology is only used to track the files (and not e.g. to prevent playing the media on some device), its deployment will probably not even be noticed at first.

The diff of two otherwise identical songs is a good way to detect the presence of such a watermark but removing the diff is not necessarily enough to remove enough of the watermark to prevent unique identification.

[HumanAbyss]

[QUOTE=ThePuska;45449425]If the watermarking technology is only used to track the files (and not e.g. to prevent playing the media on some device), its deployment will probably not even be noticed at first.

The diff of two otherwise identical songs is a good way to detect the presence of such a watermark but removing the diff is not necessarily enough to remove enough of the watermark to prevent unique identification.[/QUOTE]

it's been announced, it'll be figured out.

[cecilbdemodded]

If the porn people aren't busting a nut over this tech then you know it doesn't work.

[viperfan7]

[QUOTE=Samiam22;45436471]I give it 11 minutes[/QUOTE]

Probably already cracked

[editline]20th July 2014[/editline]

[QUOTE=gokiyono;45436475]And yet I don't think it's immune to being re-recorded[/QUOTE]

Actually, there's a DRM for movies shown in theaters that using a specific bit of audio, can indicate to a player that the video is a cam and then the player refuses to play it, its called cinavia [url]http://en.wikipedia.org/wiki/Cinavia[/url] and this is probably using the same idea

[commander204]

[QUOTE=cecilbdemodded;45451537]If the porn people aren't busting a nut over this tech then you know it doesn't work.[/QUOTE]

There have been several cases of watermarked movies being tracked back to a person who would then get charged of uploading the movie.

[Noth]

[QUOTE=ThePuska;45436466]Why do you incorrectly assume that the researchers are less knowledgeable in their field than you are?[/QUOTE]

Because they're from Deakin

[KennyAwsum]

Another Arbitrary System that does nothing but hurt the consumers.

[jason3232]

Sounds like a cd-key system for songs.

[Curls]

[QUOTE=Samiam22;45436471]I give it 11 minutes[/QUOTE]

I give it before it even was a thing they already had a way around it

[tirpider]

[QUOTE=Matthew0505;45453663]Could just take 2 copies with different watermarks and remove the parts that aren't the same.[/QUOTE]

If it's mixed into the audio or video stream, removing it might cause glitches or clicks. I'd look for a way to average it out. Probably involving some fancy fourier transform stuff that I don't understand but seems to be involved in all the good a/v filters.