Hmm..
Initially, I thought that this could not be used on consumer-aimed BD, because the original and copy would be watermarked alike, and neither would play in a compliant player.
But I've just realised I'm wrong.
They could impliment a watermark code that means "Play only if content encrypted'.
Compliant players would see the watermark in the audio stream, and see it's on a non-encrypted backup, and refuse to play the backup copy.
That would be harder to get round, because it would involve decoding the audio stream, finding and defeating the watermark, and finally re-encoding the audio stream. Are there any available encoders for any of the HD audio formats which BD supports? Or perhaps it will need to be left as LPCM.
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SC
Initially, I thought that this could not be used on consumer-aimed BD, because the original and copy would be watermarked alike, and neither would play in a compliant player.
But I've just realised I'm wrong.
They could impliment a watermark code that means "Play only if content encrypted'.
Compliant players would see the watermark in the audio stream, and see it's on a non-encrypted backup, and refuse to play the backup copy.
That would be harder to get round, because it would involve decoding the audio stream, finding and defeating the watermark, and finally re-encoding the audio stream. Are there any available encoders for any of the HD audio formats which BD supports? Or perhaps it will need to be left as LPCM.
--
SC