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That's not entirely true. Cameras are starting to introduce video signing. At least there's a chance to prove the source was filmed with camera X, if its public key is known. It would be cool if camera manufacturers had a public API for that too.

Example:

http://www.urbanalarm.com/knowledge-base/2016/digital-chain-...

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> At least there's a chance to prove the source was filmed with camera X, if its public key is known.

To be fair, the only thing that can be proven is that it was either filmed with that camera, or someone has extracted the private key from the device (or just tricked the signing chip to sign a custom data packet).

What a great idea.

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