man/flac.sgml

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  <!-- Fill in your name for FIRSTNAME and SURNAME. -->
  <!ENTITY dhfirstname "<firstname>Matt</firstname>">
  <!ENTITY dhsurname   "<surname>Zimmerman</surname>">
  <!-- Please adjust the date whenever revising the manpage. -->
  <!ENTITY dhdate      "<date>May 16, 2002</date>">
  <!-- SECTION should be 1-8, maybe w/ subsection other parameters are
       allowed: see man(7), man(1). -->
  <!ENTITY dhsection   "<manvolnum>1</manvolnum>">
  <!ENTITY dhemail     "<email>mdz@debian.org</email>">
  <!ENTITY dhusername  "Matt Zimmerman">
  <!ENTITY dhucpackage "<refentrytitle>FLAC</refentrytitle>">
  <!ENTITY dhpackage   "flac">

  <!ENTITY debian      "<productname>Debian GNU/Linux</productname>">
  <!ENTITY gnu         "<acronym>GNU</acronym>">
]>

<refentry>
  <docinfo>
    <address>
	&dhemail;
    </address>
    <author>
	&dhfirstname;
	&dhsurname;
      </author>
	<copyright>
		    <year>2002</year>
		    <holder>&dhusername;</holder>
	</copyright>
	    &dhdate;
	</docinfo>
  <refmeta>
      &dhucpackage;

      &dhsection;
    </refmeta>
      <refnamediv>
		   <refname>&dhpackage;</refname>

	<refpurpose>Free Lossless Audio Codec</refpurpose>
      </refnamediv>
	<refsynopsisdiv>
	  <cmdsynopsis>
	    <command>flac</command>

	    <arg><option><replaceable>OPTION</replaceable></option></arg>
	    <arg choice=plain><replaceable>infile</replaceable></arg>
	    <arg choice=plain><replaceable>...</replaceable></arg>
	  </cmdsynopsis>
	</refsynopsisdiv>
	<refsect1>
	  <title>DESCRIPTION</title>

	  <para>This manual page documents briefly the
	    <command>flac</command> command.</para>

	  <para>This manual page was written for the &debian;
	    distribution because the original program does not have a
	    manual page.  Instead, it has documentation in HTML
	    format; see below.</para>

	</refsect1>
	<refsect1>
	  <title>OPTIONS</title>

	  <para>A summary of options is included below.  For a complete
	  description, see the HTML documentation.</para>

	  <refsect2>
	    <title>Generic Options</title>

	    <variablelist>
	      <varlistentry>
		<term><option>-H</option>
		</term>
		<listitem>
		  <para>Show detailed help screen</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-d</option>
		</term>
		<listitem>
		  <para>Decode (default behavior is encode)</para>
		</listitem>
	      </varlistentry>

              <varlistentry>
	        <term><option>-c</option>
                </term>
                <listitem>
                  <para>Encode from standard input, or decode to
                  standard output</para>
                </listitem>
              </varlistentry>

	      <varlistentry>
		<term><option>-t</option>
		</term>
		<listitem>
		  <para>Test a flac encoded file (same as -d
		    except no decoded file is written)</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-a</option>
		</term>
		<listitem>
		  <para>Analyze a flac encoded file (same as -d
		    except an analysis file is written)</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-s</option>
		</term>
		<listitem>
		  <para>Silent mode (do not write runtime
		    encode/decode statistics to stdout)</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-o</option> <replaceable>filename</replaceable></term>
		<listitem>
		  <para>Force the output file name (usually flac just
		    changes the extension).  May only be used when
		    encoding a single file.  May not be used in
		    conjunction with --output-prefix.</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>--output-prefix</option> <replaceable>string</replaceable></term>
		<listitem>
		  <para>Prefix each output file name with the given
		    string.  This can be useful for encoding/decoding
		    files to a different directory.  Make sure if your
		    string is a path name that it ends with a trailing
		    `/' (slash).</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>--delete-input-file</option>
		</term>
		<listitem>
		  <para>Automatically delete the input file after a
		    successful encode or decode.  If there was an
		    error (including a verify error) the input file
		    is left intact.</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>--skip</option> <replaceable>samples</replaceable></term>
		<listitem>
		  <para>Skip the specified number of samples at the
		    beginning of the input file (can be used for both
		    encoding and decoding)</para>
		</listitem>
	      </varlistentry>

	    </variablelist>
	  </refsect2>

	  <refsect2>
	    <title>Analysis Options</title>

	    <variablelist>
	      <varlistentry>
		<term><option>--a-rtext</option>
		</term>
		<listitem>
		  <para>Includes the residual signal in the analysis
		    file.  This will make the file very big, much
		    larger than even the decoded file.</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>--a-rgp</option>
		</term>
		<listitem>
		  <para>Generates a gnuplot file for every subframe;
		    each file will contain the residual distribution
		    of the subframe.  This will create a lot of
		    files.</para>
		</listitem>
	      </varlistentry>

	    </variablelist>
	  </refsect2>

	  <refsect2>
	    <title>Encoding Options</title>

	    <variablelist>
	      <varlistentry>
		<term><option>--ogg</option></term>

		<listitem>
		  <para>When encoding, generate Ogg-FLAC output instead
		    of native-FLAC.  Ogg-FLAC streams are FLAC streams
		    wrapped in an Ogg transport layer.  The resulting
		    file should have an '.ogg' extension and will still
		    be decodable by flac.</para>
		  <para>When decoding, force the input to be treated as
		    Ogg-FLAC.  This is useful when piping input from
		    stdin or when the filename does not end in '.ogg'.</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>--lax</option></term>

		<listitem>
		  <para>Allow encoder to generate non-Subset
		    files.</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>--sector-align</option></term>

		<listitem>
		  <para>Align encoding of multiple CD format WAVE
		    files on sector boundaries.  See the HTML
		    documentation for more information.</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-S</option> <replaceable>{ # | X | #x }</replaceable></term>

		<listitem>
		  <para>
		    Include a point or points in a SEEKTABLE.  Using #,
		    a seek point at that sample number is added.  Using
		    X, a placeholder point is added at the end of a the
		    table.  Using #x, # evenly spaced seek points will
		    be added, the first being at sample 0.  You may use
		    many -S options; the resulting SEEKTABLE will be the
		    unique-ified union of all such values.  With no -S
		    options, flac defaults to '-S 100x'.  Use -S- for
		    no SEEKTABLE.  Note: '-S #x' will not work if the
		    encoder can't determine the input size before
		    starting.  Note: if you use '-S #' and # is >=
		    samples in the input, there will be either no seek
		    point entered (if the input size is determinable
		    before encoding starts) or a placeholder point (if
		    input size is not determinable).</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-P</option> <replaceable>bytes</replaceable></term>

		<listitem>
		  <para>Tell the encoder to write a PADDING metadata
		    block of the given length (in bytes) after the
		    STREAMINFO block.  This is useful if you plan to
		    tag the file later with an APPLICATION block;
		    instead of having to rewrite the entire file later
		    just to insert your block, you can write directly
		    over the PADDING block.  Note that the total length
		    of the PADDING block will be 4 bytes longer than
		    the length given because of the 4 metadata block
		    header bytes.  You can force no PADDING block at
		    all to be written with -P-, which is the default.
		    </para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-b</option> <replaceable>blocksize</replaceable></term>

		<listitem>
		  <para>Default is 1152 for -l 0, else 4608; must be
		    192/576/1152/2304/4608/256/512/1024/2048/4096/8192/16384/32768
		    (unless --lax is used)</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-m</option></term>

		<listitem>
		  <para>Try mid-side coding for each frame (stereo
		    input only)</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-M</option></term>

		<listitem>
		  <para>Loose mid-side coding for all frames (stereo
		    input only)</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-0</option>..<option>-8</option></term>

		<listitem>
		  <para>Fastest compression..highest compression
		    (default is -5).  These are synonyms for other
		    options:</para>

		  <variablelist>
		    <varlistentry>
		      <term><option>-0</option></term>

		      <listitem>
			<para>Synonymous with -l 0 -b 1152 -r 2,2
			  </para>
		      </listitem>
		    </varlistentry>

		    <varlistentry>
		      <term><option>-1</option></term>

		      <listitem>
			<para>Synonymous with -l 0 -b 1152 -M -r 2,2
			  </para>
		      </listitem>
		    </varlistentry>

		    <varlistentry>
		      <term><option>-2</option></term>

		      <listitem>
			<para>Synonymous with -l 0 -b 1152 -m -r 3
			  </para>
		      </listitem>
		    </varlistentry>

		    <varlistentry>
		      <term><option>-3</option></term>

		      <listitem>
			<para>Synonymous with -l 6 -b 4608 -r 3,3
			  </para>
		      </listitem>
		    </varlistentry>

		    <varlistentry>
		      <term><option>-4</option></term>

		      <listitem>
			<para>Synonymous with -l 8 -b 4608 -M -r 3,3
			  </para>
		      </listitem>
		    </varlistentry>

		    <varlistentry>
		      <term><option>-5</option></term>

		      <listitem>
			<para>Synonymous with -l 8 -b 4608 -m -r 3,3
			  </para>
		      </listitem>
		    </varlistentry>

		    <varlistentry>
		      <term><option>-6</option></term>

		      <listitem>
			<para>Synonymous with -l 8 -b 4608 -m -r 4
			  </para>
		      </listitem>
		    </varlistentry>

		    <varlistentry>
		      <term><option>-7</option></term>

		      <listitem>
			<para>Synonymous with -l 8 -b 4608 -m -e -r 6
			  </para>
		      </listitem>
		    </varlistentry>

		    <varlistentry>
		      <term><option>-8</option></term>

		      <listitem>
			<para>Synonymous with -l 12 -b 4608 -m -e -r 6
			  </para>
		      </listitem>
		    </varlistentry>
		  </variablelist>

		</listitem>


	      </varlistentry>

	      <varlistentry>
		<term><option>--fast</option></term>

		<listitem>
		  <para>Fastest compression.  Currently
		    synonymous with -0.</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>--best</option></term>

		<listitem>
		  <para>Highest compression.  Currently
		    synonymous with -8.</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-e</option></term>

		<listitem>
		  <para>Do exhaustive model search
		    (expensive!)</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-E</option></term>

		<listitem>
		  <para>Do escape coding in the entropy coder.  This
		    causes the encoder to use an unencoded representation
		    of the residual in a partition if it is smaller.  It
		    increases the runtime and usually results in an
		    improvement of less than 1%.</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-l</option> <replaceable>max_lpc_order</replaceable></term>

		<listitem>
		  <para>0 => use only fixed predictors</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-p</option></term>

		<listitem>
		  <para>Do exhaustive search of LP coefficient
		    quantization (expensive!).  Overrides -q,
		    does nothing if using -l 0</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-q</option> <replaceable>bits</replaceable></term>

		<listitem>
		  <para>Precision of the quantized linear-predictor
		    coefficients, 0 => let encoder decide (min is 5,
		    default is 0)</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-r</option> <replaceable>[level,]level</replaceable></term>

		<listitem>
		  <para>Set the [min,]max residual partition order
		    (0..16). min defaults to 0 if unspecified.  Default
		    is -r 3,3.</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-R</option> <replaceable>#</replaceable></term>

		<listitem>
		  <para>Set the Rice parameter search distance.
		    Default is 0.</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-V</option></term>

		<listitem>
		  <para>Verify a correct encoding by decoding the
		    output in parallel and comparing to the
		    original</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-S-</option> <option>-P-</option> <option>-m-</option> <option>-M-</option> <option>-e-</option> <option>-E-</option> <option>-p-</option> <option>-V-</option> <option>--delete-input-file-</option> <option>--lax-</option> <option>--ogg-</option>
		</term>

		<listitem>
		  <para>These flags can be used to invert the sense
		    of the corresponding normal option.</para>
		</listitem>
	      </varlistentry>
	    </variablelist>

	  </refsect2>
	  <refsect2>
	    <title>Format Options</title>

	    <variablelist>
	      <varlistentry>
		<term><option>-fb</option></term>

		<listitem>
		  <para>Big-endian byte order</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-fl</option></term>

		<listitem>
		  <para>Little-endian byte order</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-fc</option>
		  <replaceable>channels</replaceable></term>

		<listitem>
		  <para>Set number of channels.</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-fp</option>
		  <replaceable>bits_per_sample</replaceable></term>

		<listitem>
		  <para>Set bits per sample.</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-fs</option>
		  <replaceable>sample_rate</replaceable></term>

		<listitem>
		  <para>Set sample rate (in Hz).</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-fu</option></term>

		<listitem>
		  <para>Unsigned samples (default is signed)</para>
		</listitem>
	      </varlistentry>

	      <varlistentry>
		<term><option>-fr</option></term>

		<listitem>
		  <para>Force to raw format (even if filename ends
		    in <filename>.wav</filename>).</para>
		</listitem>
	      </varlistentry>

	    </variablelist>
	  </refsect2>

	</refsect1>
	  <refsect1>
	    <title>SEE ALSO</title>

	    <para>The programs are documented fully by HTML format
	      documentation, available in
	      <filename>/usr/share/doc/flac/html</filename> on
		&debian; systems.</para>
	  </refsect1>
	  <refsect1>
	    <title>AUTHOR</title>

	    <para>This manual page was written by &dhusername; &dhemail; for
	      the &debian; system (but may be used by others).</para>

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	</refsect1>
      </refentry>

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