Package: wnpp
Severity: wishlist
Package name : dvbackup
Version : 0.0.4rj1-1
Upstream Author : Peter Schlaile <udbz@rz.uni-karlsruhe.de> and
Guido Fiala <gfiala@s.netic.de>
URL : <http://dvbackup.sourceforge.net/> and
<http://www.s.netic.de/gfiala/rsbep.html>
License : GPL
Description : backup tool using MiniDV camcorders
Dvbackup hides the data it receives on standard input in a perfectly
legal DV (digital video) stream. This allows you to use your DV camcorder
and your DV cardridges as a potent mass storage system. Obviously, your
system and your camcorder have to be connected via IEEE1394 (aka Firewire,
iLink).
Current digital camcorders can save approximately 13 GB of data on those
tiny DV cartridges at a speed of 3.6 MB/sec. That's faster than most
DAT streamers which only work at 1 MB/sec or less. dvbackup can not use all of
the data, but 10 GB should be good enough for everyone.
To bring the data on tape, you have to use an additional utility, called
dvconnect, which is included in libdv-bin.
This packages also contains rsbep, an implementation of a special version of
the Reed-Solomon FEC (forward error correction) algorithm. It also
spreads the bytes of the resulting blocks out to give some protection
against burst errors (e.g from tape-recordings). It should be used in a
pipe together with dvbackup (before dvbackup while encoding and after
it while decoding). rsbep should be sufficient to make the LP mode of
your camcorder usable. This mode, which puts about 50% more data
on the cardridge would otherwise be too error-prone. rsbep is the
fast implementation in i386 assembler, rsbepC uses pure C and is
significantly slower (about ten times).
--
... when fits of creativity run strong, more than one programmer or writer
has been known to abandon the desktop for the more spacious floor.
-- Fred Brooks
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