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What software will allow me to make a duplicate of DVD-A disks? Will something like Nero or ripit4me do the job?
Follow Ups:
If the disc has a file with the extension MKB, then you cannot back it up.
If the disc has watermarked audio, you can copy it, but it will cut out after a certain time to silence.For a totally unprotected (IE Home Made) disc, just turn it into an ISO file, and that's it done.
Unless it is a Dual Layer disc. In which case you need to be certain it is not a PTP mastered disc (All mine are, it's the way I create them) or else you will not be able to make a copy that is glitch free at the layer break.
To check for PTP or not, look in the disc properties with an application like GEAR Pro Mastering Edition.Most DVD-A are Dual Layer.
Is it better than OTP? Why can't it be copied?
PTP is Parallel Track Path, and it can still be copied.
Trouble is, it cannot be copied as authored because no DL discs exist that can be written in PTP mode.
Writing a DVD9 PTP authored disc to a blank DL OTP formatted disc will result in the layer break not going where it was supposed to be because with OTP authoring (As is normally used in DVD-Video) Layer 0 must be larger than Layer 1.
With PTP, it doesn't matter and Layer 0 can be smaller than layer 1.
Anyway, writing in OTP mode will move the layer break, and introduce one where there was not one previously. As a result, the audio will probably glitch at the break point.
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