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<body>
<div class="document" id="cuerecover">
<h1 class="title">cuerecover</h1>
<h2 class="subtitle" id="generate-cue-file-for-cd-image-bin">generate .cue file for CD image .bin</h2>
<table class="docinfo" frame="void" rules="none">
<col class="docinfo-name" />
<col class="docinfo-content" />
<tbody valign="top">
<tr class="manual-section field"><th class="docinfo-name">Manual section:</th><td class="field-body">1</td>
</tr>
<tr class="manual-group field"><th class="docinfo-name">Manual group:</th><td class="field-body">Urchlay</td>
</tr>
<tr><th class="docinfo-name">Date:</th>
<td>2020-05-13</td></tr>
<tr><th class="docinfo-name">Version:</th>
<td>0.2.0</td></tr>
</tbody>
</table>
<!-- RST source for cuerecover(1) man page. Convert with: -->
<!-- rst2man.py cuerecover.rst > cuerecover.1 -->
<!-- rst2man.py comes from the SBo development/docutils package. -->
<!-- note to self: don't forget to check the generated man and html pages -->
<!-- into git since we don't want to require our users to have rst2man.py. -->
<div class="section" id="synopsis">
<h1>SYNOPSIS</h1>
<p>cuerecover [-o output] [-s sec] [-t thresh] <strong>bin-file</strong> [<strong>bin-file</strong> ...]</p>
</div>
<div class="section" id="description">
<h1>DESCRIPTION</h1>
<p>cuerecover attempts to generate a usable cue sheet for CD images which
are missing their .cue (or .ccd, .mds, etc) files.</p>
<p>If a single .bin file is given, it's assumed to hold all the tracks (which
might only be one). If multiple .bin files are given, each one is assumed to
represent one track of the same CD image.</p>
<p>For data tracks, the recovered track should be correct, provided the
bin file wasn't truncated or otherwise corrupted.</p>
<p>For audio tracks in a single .bin file, silence detection is used to
find the split points between tracks. This means that in cases where
one track segues into another, the two tracks will be combined in the
resulting cue sheet. Also, if there are long periods of silence within
a single track, this track will be split into two or more tracks.</p>
</div>
<div class="section" id="options">
<h1>OPTIONS</h1>
<table class="docutils option-list" frame="void" rules="none">
<col class="option" />
<col class="description" />
<tbody valign="top">
<tr><td class="option-group">
<kbd><span class="option">--help</span></kbd></td>
<td>Print short usage string.</td></tr>
<tr><td class="option-group">
<kbd><span class="option">-o <var><file></var></span></kbd></td>
<td>Write cue file to <em>file</em> rather than standard output. If
<em>file</em> already exists, cuerecover will refuse to overwrite it,
which makes this safer than redirecting stdout. It's customary
for cue files to have the same filename as their bin file(s),
with the .bin replaced by .cue, but it's not actually required.</td></tr>
<tr><td class="option-group">
<kbd><span class="option">-s <var><sec></var></span></kbd></td>
<td>Minimum amount of silence for detecting the split point between
two audio tracks. Argument is in seconds, and decimals
are allowed. The default is 2, which is the standard sized
gap between tracks in the Redbook standard and in most CD
authoring software. 0 means to disable splitting tracks:
all the audio tracks will be combined into one in the
.cue sheet. This option is ignored when multiple .bin file
arguments are given, since they're already split into tracks.</td></tr>
<tr><td class="option-group">
<kbd><span class="option">-t <var><thresh></var></span></kbd></td>
<td>Silence threshold, 0 to 100. Default is 0. This is
the percentage of non-zero bytes allowed in a sector for it
to be considered silent. Sometimes audio tracks have random
data in the pregap (before the INDEX 01), which will fool
cuerecover into thinking there's no pregap. This option can
help with those, but don't set it too high. This option is ignored
when multiple .bin file arguments are given, since they're already
split into tracks.</td></tr>
<tr><td class="option-group">
<kbd><span class="option">-v</span></kbd></td>
<td>Verbose mode. Prints (on stderr) some extra messages about what
cuerecover is doing. Probably only of interest to the author.</td></tr>
</tbody>
</table>
<p>Always include a space between an option and its argument (e.g. <strong>-s 1</strong>, not <strong>-s1</strong>).</p>
</div>
<div class="section" id="notes">
<h1>NOTES</h1>
<p>cuerecover works a lot better when it's reading a split image (one file
per track).</p>
<p>When reading a monolithic image (multiple tracks the same file),
cuerecover has to make some assumptions. These are usually valid, but
should be mentioned here:</p>
<ul class="simple">
<li>The disc image is a single session. Actually multisession discs might
work too, but I have no examples to test with. If you're dealing with
an image of a commercial release (a game, probably), it'll be single
session.</li>
<li>The tracks are all MODE1 (data), MODE2 (also data, usually video CDs) or
CD-DA (regular CD audio). Extended format CDs like XA or CD+I are not
supported, though you might still get listenable audio tracks from them.</li>
<li>If there's a data track, it will be the only data track, and it will be
track 1. This is almost always the case, since most operating systems
from the CD-ROM era (and even modern ones) don't provide access to
data tracks that aren't the first track on the disc.</li>
<li>If there's a data track, it's a raw image (2352 bytes per sector, includes
the sync pulse, address, CRC, ECC, etc). If the data track was stored as
'cooked' data (2048 bytes/sector, MODE1/2048 in the original .cue
file), it'll be treated as an audio track (or more likely 20 or 30
audio tracks), and you'll get a warning that it looks like 'cooked'
data. You can check for this by trying to mount the .bin file as an
ISO or HFS image: if it mounts, the first track is 'cooked'.</li>
<li>If a data track gets mis-identified as a file, it'll be obvious if
you use the .cue sheet to extract the image into files: you'll
probably get way too many tracks, since most filesystem images have
long stretches of "silence" (long runs of zeroes). If you try to listen
to these, you'll notice that ISO images don't sound musical at all!
The last few tracks will be the largest, and these will be valid audio,
if there were any audio tracks.</li>
<li>Audio tracks are separated by at least 2 seconds of silence (or whatever
you set -s to). If not, there's no way to detect where one track ends
and the next begins, so they'll get merged together.</li>
<li>In the best case scenario, cuerecover will generate <em>a</em> cue file, which
will be valid... but it may not match the original (missing) one
exactly. This is because cuerecover has to look for silent sections
of the image and use those as split points for the tracks. If there's
a 3-second silent section between tracks 2 and 3, is that 1 second of
silence at the end of track 2 and 2 seconds of silence at the start of
track 3, or vice versa, or 1.5 seconds each, or...?</li>
</ul>
<!-- other sections we might want, uncomment as needed. -->
<!-- FILES -->
<!-- ===== -->
<!-- ENVIRONMENT -->
<!-- =========== -->
</div>
<div class="section" id="exit-status">
<h1>EXIT STATUS</h1>
<p>As usual, 0 for success, non-zero for failure.</p>
<!-- BUGS -->
<!-- ==== -->
<!-- EXAMPLES -->
<!-- ======== -->
</div>
<div class="section" id="author">
<h1>AUTHOR</h1>
<p>cuerecover was written by B. Watson <<a class="reference external" href="mailto:yalhcru@gmail.com">yalhcru@gmail.com</a>> and
released under the WTFPL: Do WTF you want with this.</p>
</div>
<div class="section" id="see-also">
<h1>SEE ALSO</h1>
<p>miragextract(1)</p>
<p>The manual for GNU ccd2cue(1) has useful information on the .cue
file format:</p>
<blockquote>
<a class="reference external" href="https://www.gnu.org/software/ccd2cue/manual/html_node/CUE-sheet-format.html">https://www.gnu.org/software/ccd2cue/manual/html_node/CUE-sheet-format.html</a></blockquote>
<p>More information on the CD-ROM data formats:</p>
<blockquote>
<a class="reference external" href="https://wiki.osdev.org/User:Combuster/CDRom_BS">https://wiki.osdev.org/User:Combuster/CDRom_BS</a>
<a class="reference external" href="https://en.wikipedia.org/wiki/CD-ROM">https://en.wikipedia.org/wiki/CD-ROM</a></blockquote>
</div>
</div>
</body>
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