I don't understand how this avoids any simple attack both for audio or video:
- Alter/manipulate the audio/video has much as you want.
- Play it.
- Have a "attested" microphone/video recording the "manipulated audio/video".
For video maybe you can actually try to prove that's recording a screen not the real event, but seems much harder for audio, you can just say the echos/ distortions came from the environment...
- Alter/manipulate the audio/video has much as you want.
- Play it.
- Have a "attested" microphone/video recording the "manipulated audio/video".
For video maybe you can actually try to prove that's recording a screen not the real event, but seems much harder for audio, you can just say the echos/ distortions came from the environment...