Backup SACD to ISO, CD, or DVD-Audio?

[robinmthomas]

I have a couple of SACDs that I would like to backup to ISO (or something else if applicable).

I have tried using Alex's ISO Creator Powertoy, but it crashes Windows Explorer when trying to back these CDs to ISO. It works on other CDs so I know it works.

I tried CDRWIN, but when I tried to make a CD using the ISO all I got was weird noise, static, and strange effects. When I load it into WMP, it loads the album info and track info, but the audio is messed. I don't know very much about the SACD format, so I am guessing CRDWIN doesn't understand the format.

I did some research and it seems to imply that maybe these discs are actually closer to a DVD technology than CD and actually has multiple layers.

So, can I take a SACD and make a DVD-Audio disc?


Also, I am looking for a CRC Tool. There are a couple of possibilities that turn on a Google search, but I wasn't sure what the best one was. Basically, I am looking to run a CRC against the CD or an ISO to verify that they are exact matches and have no corruption.

I don't need to worry about MD5 hashes or any of that sort of thing.

Any ideas?

[Cornucopia]

You got a couple of problems you have to work through...

Do you want to backup the "CD" portion of the disc, or the "SACD" portion?
(Not all discs have both, some just have the SACD part)

If all you want is the "CD" portion, you have to have a drive in your computer that can read the "CD" portion, and you have to have software/drivers on your computer that can see the "CD" portion through the semitransparent "SACD" portion. If your PC apps can see it (usual .cda "files" or more accurately, Red Book tracks), then you should be able to rip the tracks like a normal CD.

If, on the other hand, you want the "SACD" portion, you're SOL.

SACD and DVD-Audio each have encrypted files, similar to, but more advanced than, CSS for DVD-Video.
Everybody says that any encryption should be breakable, but so far nobody has succeeded with these 2. This might be due to some lack of interest in doing so. You can copy the files as your filesystem sees them, but they'll be SCRAMBLED.

Even if you have an unencrypted SACD (I don't even know if this is allowed), you still have to decode the Direct-Stream-Digital file format, either with a Directshow filter, or with a dedicated player, in order to hear the sound. Maybe the newest versions of WinDVD or PowerDVD have this, but AFAIK I don't think so.

The fact that you keep mentioning ISO leads me to believe that what you are seeing is the UDF filesystems display of the SACD portion--no good for you.

SACD's really are VERY, VERY much like DVD's at least on the physical DVD-ROM level and the logical UDF filesystem level, but not in the application/track structural level. And, at this stage, there is no such thing as a burnable SACD which has been verified as readable in players.

Maybe someday...

Scott

p.s. The fail-safe, low-tech way would be to play them through your analog audio outs of the set-top and capture with your sound card. Not so bad if you happen to have an Audigy2 or better.

[Drakng]

Cornucopia.. I have the files as .cda (CD Portion) . Is there a way to covert it to wav so that I can used in a more versatile manner for editing and muxing.

[Cornucopia]

Cornucopia.. I have the files as .cda (CD Portion) . Is there a way to covert it to wav so that I can used in a more versatile manner for editing and muxing.

Check how large those files are...
If they're ~10MB per minute (stereo), then they're correctly sized. If they're a good deal smaller, then all you did is copy the pointer to the track (cuz that's what Windows is really doing when referring to .cda files).

Use a good CD ripping program to extract them (CDRWIN, EAC, etc.). It will rip the tracks and copy the PCM data directly into a std. WAV file (or optionally, encode to MP3). Ripping apps specialize in working with Red Book tracks so that additional file/data errors aren't introduced (or with seriously bad tracks-are minimized).

HTH,
Scott