[ProAudio] DVD Dubbing Problem

[Bob Katz]

If I recall, mini-dv was a medium dedicated to Sony's lossy coded 
format. If I'm right then the so-called "16 bit 48 kHz" files are lossy 
encoded. The lossy encoded wordlength in the file is apparently 16 bit 
but when decoded it will expand to 18 bits in linear pcm format 
(formerly lossy coded) or more.

And if I'm right then David Josephson's point about finding the original 
player makes sense and you have to play it from the original software. I 
suggest having a bit-scope on the digital output to sense the output 
wordlength coming from the decoder. You could do that by playing the dig 
out (SPDIF) into a good DAW and run a plugin called "bitter" on the 
bitstream.


Bob


On 5/19/25 12:40 PM, David Josephson via ProAudio wrote:
> Jim, do you still have the miniDV player? What kind of digital output does it have? Are you sure the DVD copies are bit-for-bit?
>
> David J
>
>> On Aug 31, 2024, at 19:45, Jim Brown via ProAudio<proaudio at bach.pgm.com> wrote:
>>
>> I'm in the process of dubbing music performance with world class players I recorded 20-25 years ago using a Canon XL1 writing to MiniDV. The audio is 16-bit 48 kHz, I recorded acoustic music with very good mics. The XL1 has pretty good glass, well above consumer grade.
>>
>> I've successfully managed to write DVDs with FireWire between a semi-pro player and a decent consumer DVD recorder. Now that I have the DVDs, I'm looking for a method to make bit-for-bit copies of them. I have no rights management to deal with. I need 3-5 copies of each program. My goal is not add a generation of data compression, without the need to make a transfer from the master for for each copy.
>>
>> I've found a review of a half-dozen or so Windows programs that seem to do it, but I don't trust the reviewer to know about data compression and generations.
>>
>> Any advice? Places to look?
>>
>> Thank, Jim Brown
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If you want good sound on your album, come to Bob Katz 407-831-0233 
DIGITAL DOMAIN MASTERING STUDIO Author: *Mastering Audio* Digital Domain 
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