Algorithm allows video editors to modify talking-head videos as if editing text

Re:Algorithm allows video editors to modify talking-head vid... by tyrust on Friday June 07, 2019 @12:22PM (#20126166)

>If you can sign a video then you can sign a doctored video.

I don't understand your point, you wouldn't sign a doctored video unless you wanted to do so. It's entirely possible to apply the principles of PGP to video.

>If it's only your camera that can sign the video, not you directly, don't be fooled that it will be possible to protect the private keys in the camera from extraction.

I doubt this would be the solution on which the world settles.

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Re:Algorithm allows video editors to modify talking-head vid... by astrodust on Friday June 07, 2019 @01:53PM (#20127055)

If you can sign anything then what purpose does a signature serve?

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Re:Algorithm allows video editors to modify talking-head vid... by tyrust on Friday June 07, 2019 @06:06PM (#20129037)

You only sign what you want to sign.

When you publish a video of you speaking at a public event, you sign it. When someone else publishes a doctored video of you, you do not sign it.

This alone doesn't protect you in the case that someone speaks and then later intentionally doctors and signs the video in order to change what they said. In this case trusted third parties (e.g. news organizations) could sign videos as well. A set of signatures taken together can provide trust.

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Re:Algorithm allows video editors to modify talking-head vid... by astrodust on Friday June 07, 2019 @07:17PM (#20129480)

That's not how this works though. If I want to post video clamining someone did something, I sign it, but what does this prove? Nothing.

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Re:Algorithm allows video editors to modify talking-head vid... by tyrust on Saturday June 08, 2019 @03:19AM (#20131101)

Well yeah, because you aren't the subject of the video and you have no reputation.

You wouldn't think a letter from your mom is from your mom unless your mom signed it.

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Re:Algorithm allows video editors to modify talking-head vid... by anigbrowl on Sunday June 09, 2019 @02:28AM (#20137533)

It's not supposed to validate the truthfulness of the content, why would you think that was the purpose?

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