openbsd-ports/misc/cdrdao/pkg/DESCR

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What does it?
Cdrdao records audio or data CD-Rs in disk-at-once (DAO) mode based
on a textual description of the CD contents (toc-file).
Why DAO?
Recording in disk-at-once mode writes the complete disc,
i.e. lead-in, one or more tracks and lead-out, in a single step.
The commonly used track-at-once (TAO) mode writes each track
independently which requires link blocks between two tracks. Older
CD-recorder models forced a two second pause (pre-gap) between two
tracks whereas newer models allow adjusting of the pause length in
TAO mode reducing the number of link blocks to a minimal amount.
However, with TAO it is generally not possible to define the data
that is written in pre-gaps. But exactly this feature makes audio
CD recording interesting, e.g. by creating hidden bonus tracks or
track intros in pre-gaps like it is common habit on commercial CDs.
Finally, DAO recording is the only way to write data to the unused
R-W sub-channels for e.g. CD-G or CD-TEXT.
Features
* Full control over length and contents of pre-gaps (pause areas
between tracks). Pre-gaps may be completely omitted, e.g. for
dividing live recordings into tracks.
* Control over sub-channel data like:
+ catalog number
+ copy, pre-emphasis, 2-/4-channel flags
+ ISRC code
+ index marks
* Support for exact audio or data CD copying.
* Tracks may be composed of different audio files supporting non
destructive cut.
* Accepts WAVE and raw audio files.
* CD-TEXT reading and writing with drives that support it.
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