Joerg Schilling wrote:
Well, then the handbook is sub-optimal.
dd in general does not work at all to read CD-Audio;
FreeBSD is an exception with repect to the fact that you get data at all.
Here is a list of cons for dd even on FreeBSD:
- dd may not work with all drives
- Do you know what byteorder you get from a MMC CD-ROM drive
on FreeBSD/Sparc? You would need network byteorder on Sparc
but the MMC CD-ROM drive delivers intel byteorder due to a
bug in the MMC standard
cdrecord always asumes network byte order for RAW audio data,
this is reasonable
- Why would you deal with raw audio data at all if there are
audio file formats that include a notation for byte order and
- There is no jitter check and no quality control with dd on FreeBSD,
cdda2wav works on all OS and has jitter control and qualiti control
with e.g. libparanoia.
- There is no way to get the correct CD structure back if you use dd.
Cdda2wav reads meta-data and puts them into *.inf files.
- With dd, you cannot read intentionally defective media as sold by
the music mafia.
Allowing to read CD-DA using dd on FreeBSD is a nice gag but nothing I would
recommend in order to create a copy from an audio CD.
Thank you, good points.
This seems to be reflected in the Handbook.
I will file a PR for this.
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