Quote:
Originally Posted by garnoil
I was asked today if the 5.1 sound on a DVD can be ripped into 6 discrete channels as the distributor requires HD cam SR.
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Probably confirming what I think you already know here .......
I would say while it is possible to do this it is not good practice.
The expectation when requesting/receiving audio discrete on a HDcamSR is that the material is 'un compressed full bandwidth'
This material will have had data reduction to 448kbps as part of initial Ac3 encode and so could not be considered 'un compressed full bandwidth'.
My understanding of Ac3 is that it was not designed for several encode/decode passes -like Dolby E -but as a final delivery codec ie encode once, decode once.
Anyway I guess best to inform your client -get them to check delivery specs, and let them decided what they want to do. Probably be worth having a listen to the material after it has been re-encoded to Ac3 again -to see what the result is.
All the best
Bruno