update verbiage about -P, now that the default is -P 4096
[flac.git] / man / flac.sgml
1 <!doctype refentry PUBLIC "-//Davenport//DTD DocBook V3.0//EN" [
2
3   <!-- Fill in your name for FIRSTNAME and SURNAME. -->
4   <!ENTITY dhfirstname "<firstname>Matt</firstname>">
5   <!ENTITY dhsurname   "<surname>Zimmerman</surname>">
6   <!-- Please adjust the date whenever revising the manpage. -->
7   <!ENTITY dhdate      "<date>January 10, 2003</date>">
8   <!-- SECTION should be 1-8, maybe w/ subsection other parameters are
9        allowed: see man(7), man(1). -->
10   <!ENTITY dhsection   "<manvolnum>1</manvolnum>">
11   <!ENTITY dhemail     "<email>mdz@debian.org</email>">
12   <!ENTITY dhusername  "Matt Zimmerman">
13   <!ENTITY dhucpackage "<refentrytitle>FLAC</refentrytitle>">
14   <!ENTITY dhpackage   "flac">
15
16   <!ENTITY debian      "<productname>Debian GNU/Linux</productname>">
17   <!ENTITY gnu         "<acronym>GNU</acronym>">
18 ]>
19
20 <refentry>
21   <docinfo>
22     <address>
23         &dhemail;
24     </address>
25     <author>
26         &dhfirstname;
27         &dhsurname;
28       </author>
29         <copyright>
30                     <year>2002,2003</year>
31                     <holder>&dhusername;</holder>
32         </copyright>
33             &dhdate;
34         </docinfo>
35   <refmeta>
36       &dhucpackage;
37
38       &dhsection;
39     </refmeta>
40       <refnamediv>
41                    <refname>&dhpackage;</refname>
42
43         <refpurpose>Free Lossless Audio Codec</refpurpose>
44       </refnamediv>
45         <refsynopsisdiv>
46           <cmdsynopsis>
47             <command>flac</command>
48
49             <arg><option><replaceable>OPTION</replaceable></option></arg>
50             <arg choice=plain><replaceable>infile</replaceable></arg>
51             <arg choice=plain><replaceable>...</replaceable></arg>
52           </cmdsynopsis>
53         </refsynopsisdiv>
54         <refsect1>
55           <title>DESCRIPTION</title>
56
57           <para>This manual page documents briefly the
58             <command>flac</command> command.</para>
59
60           <para>This manual page was written for the &debian;
61             distribution because the original program does not have a
62             manual page.  Instead, it has documentation in HTML
63             format; see below.</para>
64
65         </refsect1>
66         <refsect1>
67           <title>OPTIONS</title>
68
69           <para>A summary of options is included below.  For a complete
70           description, see the HTML documentation.</para>
71
72           <refsect2>
73             <title>General Options</title>
74
75             <variablelist>
76               <varlistentry>
77                 <term><option>-v</option>, <option>--version</option>
78                 </term>
79                 <listitem>
80                   <para>Show the flac version number</para>
81                 </listitem>
82               </varlistentry>
83
84               <varlistentry>
85                 <term><option>-h</option>, <option>--help</option>
86                 </term>
87                 <listitem>
88                   <para>Show basic usage and a list of all options</para>
89                 </listitem>
90               </varlistentry>
91
92               <varlistentry>
93                 <term><option>-H</option>, <option>--explain</option>
94                 </term>
95                 <listitem>
96                   <para>Show detailed explanation of usage and all options</para>
97                 </listitem>
98               </varlistentry>
99
100               <varlistentry>
101                 <term><option>-d</option>, <option>--decode</option>
102                 </term>
103                 <listitem>
104                   <para>Decode (the default behavior is to encode)</para>
105                 </listitem>
106               </varlistentry>
107
108               <varlistentry>
109                 <term><option>-t</option>, <option>--test</option>
110                 </term>
111                 <listitem>
112                   <para>Test a flac encoded file (same as -d
113                     except no decoded file is written)</para>
114                 </listitem>
115               </varlistentry>
116
117               <varlistentry>
118                 <term><option>-a</option>, <option>--analyze</option>
119                 </term>
120                 <listitem>
121                   <para>Analyze a flac encoded file (same as -d
122                     except an analysis file is written)</para>
123                 </listitem>
124               </varlistentry>
125
126               <varlistentry>
127                 <term><option>-c</option>, <option>--stdout</option>
128                 </term>
129                 <listitem>
130                   <para>Write output to stdout</para>
131                 </listitem>
132               </varlistentry>
133
134               <varlistentry>
135                 <term><option>-s</option>, <option>--silent</option>
136                 </term>
137                 <listitem>
138                   <para>Silent mode (do not write runtime
139                     encode/decode statistics to stderr)</para>
140                 </listitem>
141               </varlistentry>
142
143               <varlistentry>
144                 <term><option>-o</option> <replaceable>filename</replaceable>, <option>--output-name</option>=<replaceable>filename</replaceable></term>
145                 <listitem>
146                   <para>Force the output file name (usually flac just
147                     changes the extension).  May only be used when
148                     encoding a single file.  May not be used in
149                     conjunction with --output-prefix.</para>
150                 </listitem>
151               </varlistentry>
152
153               <varlistentry>
154                 <term><option>--output-prefix</option>=<replaceable>string</replaceable></term>
155                 <listitem>
156                   <para>Prefix each output file name with the given
157                     string.  This can be useful for encoding or decoding
158                     files to a different directory.  Make sure if your
159                     string is a path name that it ends with a trailing
160                     `/' (slash).</para>
161                 </listitem>
162               </varlistentry>
163
164               <varlistentry>
165                 <term><option>--delete-input-file</option>
166                 </term>
167                 <listitem>
168                   <para>Automatically delete the input file after a
169                     successful encode or decode.  If there was an
170                     error (including a verify error) the input file
171                     is left intact.</para>
172                 </listitem>
173               </varlistentry>
174
175               <varlistentry>
176                 <term><option>--skip</option>={<replaceable>#</replaceable>|<replaceable>mm:ss.ss</replaceable>}</term>
177                 <listitem>
178                   <para>Skip over the first number of samples of the input.
179                     This works for both encoding and decoding, but not
180                     testing.  The alternative form mm:ss.ss can be used
181                     to specify minutes, seconds, and fractions of a
182                     second.</para>
183                 </listitem>
184               </varlistentry>
185
186               <varlistentry>
187                 <term><option>--until</option>={<replaceable>#</replaceable>|[<replaceable>+</replaceable>|<replaceable>-</replaceable>]<replaceable>mm:ss.ss</replaceable>}</term>
188                 <listitem>
189                   <para>Stop at the given sample number for each input file.
190                     This works for both encoding and decoding, but not testing.
191                     The given sample number is not included in the decoded
192                     output.  The alternative form mm:ss.ss can be used to
193                     specify minutes, seconds, and fractions of a second.  If a
194                     `+' (plus) sign is at the beginning, the --until point is
195                     relative to the --skip point.  If a `-' (minus) sign is at
196                     the beginning, the --until point is relative to end of the
197                     audio.</para>
198                 </listitem>
199               </varlistentry>
200
201               <varlistentry>
202                 <term><option>--ogg</option></term>
203
204                 <listitem>
205                   <para>When encoding, generate Ogg-FLAC output instead
206                     of native-FLAC.  Ogg-FLAC streams are FLAC streams
207                     wrapped in an Ogg transport layer.  The resulting
208                     file should have an '.ogg' extension and will still
209                     be decodable by flac.</para>
210                   <para>When decoding, force the input to be treated as
211                     Ogg-FLAC.  This is useful when piping input from
212                     stdin or when the filename does not end in '.ogg'.</para>
213                 </listitem>
214               </varlistentry>
215
216               <varlistentry>
217                 <term><option>--serial-number</option>=<replaceable>#</replaceable></term>
218
219                 <listitem>
220                   <para>When used with --ogg, specifies the serial
221                     number to use for the FLAC stream.  When encoding and
222                     no serial number is given, flac uses '0'.  When
223                     decoding and no number is given, flac uses the serial
224                     number of the first page.</para>
225                 </listitem>
226               </varlistentry>
227
228             </variablelist>
229           </refsect2>
230
231           <refsect2>
232             <title>Analysis Options</title>
233
234             <variablelist>
235               <varlistentry>
236                 <term><option>--residual-text</option>
237                 </term>
238                 <listitem>
239                   <para>Includes the residual signal in the analysis
240                     file.  This will make the file very big, much
241                     larger than even the decoded file.</para>
242                 </listitem>
243               </varlistentry>
244
245               <varlistentry>
246                 <term><option>--residual-gnuplot</option>
247                 </term>
248                 <listitem>
249                   <para>Generates a gnuplot file for every subframe;
250                     each file will contain the residual distribution
251                     of the subframe.  This will create a lot of
252                     files.</para>
253                 </listitem>
254               </varlistentry>
255
256             </variablelist>
257           </refsect2>
258
259           <refsect2>
260             <title>Decoding Options</title>
261
262             <variablelist>
263               <varlistentry>
264                 <term><option>-F</option>, <option>--decode-through-errors</option>
265                 </term>
266                 <listitem>
267                   <para>By default flac stops decoding with an error
268                     and removes the partially decoded file if it
269                     encounters a bitstream error.  With -F, errors are
270                     still printed but flac will continue decoding to
271                     completion.  Note that errors may cause the decoded
272                     audio to be missing some samples or have silent
273                     sections.</para>
274                 </listitem>
275               </varlistentry>
276
277             </variablelist>
278           </refsect2>
279
280           <refsect2>
281             <title>Encoding Options</title>
282
283             <variablelist>
284               <varlistentry>
285                 <term><option>-V</option>, <option>--verify</option></term>
286
287                 <listitem>
288                   <para>Verify a correct encoding by decoding the
289                     output in parallel and comparing to the
290                     original</para>
291                 </listitem>
292               </varlistentry>
293
294               <varlistentry>
295                 <term><option>--lax</option></term>
296
297                 <listitem>
298                   <para>Allow encoder to generate non-Subset
299                     files.</para>
300                 </listitem>
301               </varlistentry>
302
303               <varlistentry>
304                 <term><option>--replay-gain</option></term>
305
306                 <listitem>
307                   <para>Calculate ReplayGain values and store in
308                     Vorbis comments, similar to vorbisgain.  Title
309                     gains/peaks will be computed for each input
310                     file, and an album gain/peak will be computed
311                     for all files.  All input files must have the
312                     same resolution, sample rate, and number of
313                     channels.  Only mono and stereo files are
314                     allowed, and the sample rate must be one of
315                     8, 11.025, 12, 16, 22.05, 24, 32, 44.1, or 48
316                     kHz.  Also note that this option may leave a
317                     few extra bytes in a PADDING block as the exact
318                     size of the tags is not known until all files
319                     are processed.  Note that this option cannot be
320                     used when encoding to standard output (stdout).
321                     </para>
322                 </listitem>
323               </varlistentry>
324
325               <varlistentry>
326                 <term><option>--cuesheet</option>=<replaceable>filename</replaceable></term>
327
328                 <listitem>
329                   <para>Import the given cuesheet file and store it in a
330                     CUESHEET metadata block.  This option may only be used
331                     when encoding a single file.  A seekpoint will be added
332                     for each index point in the cuesheet to the SEEKTABLE
333                     unless --no-cued-seekpoints is specified.</para>
334                 </listitem>
335               </varlistentry>
336
337               <varlistentry>
338                 <term><option>--sector-align</option></term>
339
340                 <listitem>
341                   <para>Align encoding of multiple CD format WAVE
342                     files on sector boundaries.  See the HTML
343                     documentation for more information.</para>
344                 </listitem>
345               </varlistentry>
346
347               <varlistentry>
348                 <term><option>-S</option> {<replaceable>#</replaceable>|<replaceable>X</replaceable>|<replaceable>#x</replaceable>|<replaceable>#s</replaceable>}, <option>--seekpoint</option>={<replaceable>#</replaceable>|<replaceable>X</replaceable>|<replaceable>#x</replaceable>|<replaceable>#s</replaceable>}</term>
349
350                 <listitem>
351                   <para>
352                     Include a point or points in a SEEKTABLE.  Using #,
353                     a seek point at that sample number is added.  Using
354                     X, a placeholder point is added at the end of a the
355                     table.  Using #x, # evenly spaced seek points will
356                     be added, the first being at sample 0.  Using #s, a
357                     seekpoint will be added every # seconds (# does not
358                     have to be a whole number; it can be, for example, 9.5,
359                     meaning a seekpoint every 9.5 seconds).  You may use
360                     many -S options; the resulting SEEKTABLE will be the
361                     unique-ified union of all such values.  With no -S
362                     options, flac defaults to '-S 10s'.  Use --no-seektable
363                     for no SEEKTABLE.  Note: '-S #x' and '-S #s' will not
364                     work if the encoder can't determine the input size before
365                     starting.  Note: if you use '-S #' and # is >=
366                     samples in the input, there will be either no seek
367                     point entered (if the input size is determinable
368                     before encoding starts) or a placeholder point (if
369                     input size is not determinable).</para>
370                 </listitem>
371               </varlistentry>
372
373               <varlistentry>
374                 <term><option>-P</option> <replaceable>#</replaceable>, <option>--padding</option>=<replaceable>#</replaceable></term>
375
376                 <listitem>
377                   <para>Tell the encoder to write a PADDING metadata
378                     block of the given length (in bytes) after the
379                     STREAMINFO block.  This is useful if you plan to
380                     tag the file later with an APPLICATION block;
381                     instead of having to rewrite the entire file later
382                     just to insert your block, you can write directly
383                     over the PADDING block.  Note that the total length
384                     of the PADDING block will be 4 bytes longer than
385                     the length given because of the 4 metadata block
386                     header bytes.  You can force no PADDING block at
387                     all to be written with --no-padding.  The encoder
388                     writes a PADDING block of 4096 bytes by default.
389                     </para>
390                 </listitem>
391               </varlistentry>
392
393               <varlistentry>
394                 <term><option>-T</option> <replaceable>FIELD=VALUE</replaceable>, <option>--tag</option>=<replaceable>FIELD=VALUE</replaceable></term>
395
396                 <listitem>
397                   <para>Add a Vorbis comment.  The comment must adhere
398                     to the Vorbis comment spec; i.e. the FIELD must
399                     contain only legal characters, terminated by an
400                     'equals' sign.  Make sure to quote the comment if
401                     necessary.  This option may appear more than once
402                     to add several comments.  NOTE: all tags will be
403                     added to all encoded files.</para>
404                 </listitem>
405               </varlistentry>
406
407               <varlistentry>
408                 <term><option>-b</option> <replaceable>#</replaceable>, <option>--blocksize</option>=<replaceable>#</replaceable></term>
409
410                 <listitem>
411                   <para>Specify the block size in samples.  The
412                     default is 1152 for -l 0, else 4608; must be one of
413                     192, 576, 1152, 2304, 4608, 256, 512, 1024, 2048,
414                     4096, 8192, 16384, or 32768 (unless --lax is used)</para>
415                 </listitem>
416               </varlistentry>
417
418               <varlistentry>
419                 <term><option>-m</option>, <option>--mid-side</option></term>
420
421                 <listitem>
422                   <para>Try mid-side coding for each frame (stereo
423                     input only)</para>
424                 </listitem>
425               </varlistentry>
426
427               <varlistentry>
428                 <term><option>-M</option>, <option>--adaptive-mid-side</option></term>
429
430                 <listitem>
431                   <para>Adaptive mid-side coding for all frames (stereo
432                     input only)</para>
433                 </listitem>
434               </varlistentry>
435
436               <varlistentry>
437                 <term><option>-0</option>..<option>-8</option>, <option>--compression-level-0</option>..<option>--compression-level-8</option></term>
438
439                 <listitem>
440                   <para>Fastest compression..highest compression
441                     (default is -5).  These are synonyms for other
442                     options:</para>
443
444                   <variablelist>
445                     <varlistentry>
446                       <term><option>-0</option>, <option>--compression-level-0</option></term>
447
448                       <listitem>
449                         <para>Synonymous with -l 0 -b 1152 -r 2,2
450                           </para>
451                       </listitem>
452                     </varlistentry>
453
454                     <varlistentry>
455                       <term><option>-1</option>, <option>--compression-level-1</option></term>
456
457                       <listitem>
458                         <para>Synonymous with -l 0 -b 1152 -M -r 2,2
459                           </para>
460                       </listitem>
461                     </varlistentry>
462
463                     <varlistentry>
464                       <term><option>-2</option>, <option>--compression-level-2</option></term>
465
466                       <listitem>
467                         <para>Synonymous with -l 0 -b 1152 -m -r 3
468                           </para>
469                       </listitem>
470                     </varlistentry>
471
472                     <varlistentry>
473                       <term><option>-3</option>, <option>--compression-level-3</option></term>
474
475                       <listitem>
476                         <para>Synonymous with -l 6 -b 4608 -r 3,3
477                           </para>
478                       </listitem>
479                     </varlistentry>
480
481                     <varlistentry>
482                       <term><option>-4</option>, <option>--compression-level-4</option></term>
483
484                       <listitem>
485                         <para>Synonymous with -l 8 -b 4608 -M -r 3,3
486                           </para>
487                       </listitem>
488                     </varlistentry>
489
490                     <varlistentry>
491                       <term><option>-5</option>, <option>--compression-level-5</option></term>
492
493                       <listitem>
494                         <para>Synonymous with -l 8 -b 4608 -m -r 3,3
495                           </para>
496                       </listitem>
497                     </varlistentry>
498
499                     <varlistentry>
500                       <term><option>-6</option>, <option>--compression-level-6</option></term>
501
502                       <listitem>
503                         <para>Synonymous with -l 8 -b 4608 -m -r 4
504                           </para>
505                       </listitem>
506                     </varlistentry>
507
508                     <varlistentry>
509                       <term><option>-7</option>, <option>--compression-level-7</option></term>
510
511                       <listitem>
512                         <para>Synonymous with -l 8 -b 4608 -m -e -r 6
513                           </para>
514                       </listitem>
515                     </varlistentry>
516
517                     <varlistentry>
518                       <term><option>-8</option>, <option>--compression-level-8</option></term>
519
520                       <listitem>
521                         <para>Synonymous with -l 12 -b 4608 -m -e -r 6
522                           </para>
523                       </listitem>
524                     </varlistentry>
525                   </variablelist>
526
527                 </listitem>
528
529               </varlistentry>
530
531               <varlistentry>
532                 <term><option>--fast</option></term>
533
534                 <listitem>
535                   <para>Fastest compression.  Currently
536                     synonymous with -0.</para>
537                 </listitem>
538               </varlistentry>
539
540               <varlistentry>
541                 <term><option>--best</option></term>
542
543                 <listitem>
544                   <para>Highest compression.  Currently
545                     synonymous with -8.</para>
546                 </listitem>
547               </varlistentry>
548
549               <varlistentry>
550                 <term><option>-e</option>, <option>--exhaustive-model-search</option></term>
551
552                 <listitem>
553                   <para>Do exhaustive model search
554                     (expensive!)</para>
555                 </listitem>
556               </varlistentry>
557
558               <varlistentry>
559                 <term><option>-l</option> <replaceable>#</replaceable>, <option>--max-lpc-order</option>=<replaceable>#</replaceable></term>
560
561                 <listitem>
562                   <para>Set the maximum LPC order; 0 means use only the fixed predictors</para>
563                 </listitem>
564               </varlistentry>
565
566               <varlistentry>
567                 <term><option>-p</option>, <option>--qlp-coeff-precision-search</option></term>
568
569                 <listitem>
570                   <para>Do exhaustive search of LP coefficient
571                     quantization (expensive!).  Overrides -q;
572                     does nothing if using -l 0</para>
573                 </listitem>
574               </varlistentry>
575
576               <varlistentry>
577                 <term><option>-q</option> <replaceable>#</replaceable>, <option>--qlp-coeff-precision</option>=<replaceable>#</replaceable></term>
578
579                 <listitem>
580                   <para>Precision of the quantized linear-predictor
581                     coefficients, 0 => let encoder decide (min is 5,
582                     default is 0)</para>
583                 </listitem>
584               </varlistentry>
585
586               <varlistentry>
587                 <term><option>-r</option> [<replaceable>#</replaceable>,]<replaceable>#</replaceable>, <option>--rice-partition-order</option>=[<replaceable>#</replaceable>,]<replaceable>#</replaceable></term>
588
589                 <listitem>
590                   <para>Set the [min,]max residual partition order
591                     (0..16). min defaults to 0 if unspecified.  Default
592                     is -r 3,3.</para>
593                 </listitem>
594               </varlistentry>
595
596             </variablelist>
597
598           </refsect2>
599           <refsect2>
600             <title>Format Options</title>
601
602             <variablelist>
603               <varlistentry>
604                 <term><option>--endian</option>={<replaceable>big</replaceable>|<replaceable>little</replaceable>}</term>
605
606                 <listitem>
607                   <para>Set the byte order for samples</para>
608                 </listitem>
609               </varlistentry>
610
611               <varlistentry>
612                 <term><option>--channels</option>=<replaceable>#</replaceable></term>
613
614                 <listitem>
615                   <para>Set number of channels.</para>
616                 </listitem>
617               </varlistentry>
618
619               <varlistentry>
620                 <term><option>--bps</option>=<replaceable>#</replaceable></term>
621
622                 <listitem>
623                   <para>Set bits per sample.</para>
624                 </listitem>
625               </varlistentry>
626
627               <varlistentry>
628                 <term><option>--sample-rate</option>=<replaceable>#</replaceable></term>
629
630                 <listitem>
631                   <para>Set sample rate (in Hz).</para>
632                 </listitem>
633               </varlistentry>
634
635               <varlistentry>
636                 <term><option>--sign</option>={<replaceable>signed</replaceable>|<replaceable>unsigned</replaceable>}</term>
637
638                 <listitem>
639                   <para>Set the sign of samples (the default is signed).</para>
640                 </listitem>
641               </varlistentry>
642
643               <varlistentry>
644                 <term><option>--force-aiff-format</option></term>
645
646                 <listitem>
647                   <para>Force the decoder to output AIFF format.  This option
648                     is not needed if the output filename (as set by -o) ends
649                     with <filename>.aiff</filename>.  Also, this option has no
650                     effect when encoding since input AIFF is auto-detected.</para>
651                 </listitem>
652               </varlistentry>
653
654               <varlistentry>
655                 <term><option>--force-raw-format</option></term>
656
657                 <listitem>
658                   <para>Force input (when encoding) or output (when decoding)
659                     to be treated as raw samples (even if filename ends
660                     in <filename>.wav</filename>).</para>
661                 </listitem>
662               </varlistentry>
663
664             </variablelist>
665           </refsect2>
666
667           <refsect2>
668             <title>Negative Options</title>
669
670             <variablelist>
671               <varlistentry>
672                 <term><option>--no-adaptive-mid-side</option></term>
673                 <term><option>--no-decode-through-errors</option></term>
674                 <term><option>--no-delete-input-file</option></term>
675                 <term><option>--no-exhaustive-model-search</option></term>
676                 <term><option>--no-lax</option></term>
677                 <term><option>--no-mid-side</option></term>
678                 <term><option>--no-ogg</option></term>
679                 <term><option>--no-padding</option></term>
680                 <term><option>--no-qlp-coeff-precision-search</option></term>
681                 <term><option>--no-residual-gnuplot</option></term>
682                 <term><option>--no-residual-text</option></term>
683                 <term><option>--no-sector-align</option></term>
684                 <term><option>--no-seektable</option></term>
685                 <term><option>--no-silent</option></term>
686                 <term><option>--no-verify</option></term>
687                 <listitem>
688                   <para>These flags can be used to invert the sense
689                     of the corresponding normal option.</para>
690                 </listitem>
691               </varlistentry>
692             </variablelist>
693
694           </refsect2>
695
696         </refsect1>
697           <refsect1>
698             <title>SEE ALSO</title>
699
700             <para>metaflac(1).</para>
701
702             <para>The programs are documented fully by HTML format
703               documentation, available in
704               <filename>/usr/share/doc/flac/html</filename> on
705                 &debian; systems.</para>
706           </refsect1>
707           <refsect1>
708             <title>AUTHOR</title>
709
710             <para>This manual page was written by &dhusername; &dhemail; for
711               the &debian; system (but may be used by others).</para>
712
713             <!-- <para>Permission is granted to copy, distribute and/or modify
714             this document under the terms of the <acronym>GNU</acronym> Free
715             Documentation License, Version 1.1 or any later version
716             published by the Free Software Foundation; with no Invariant
717             Sections, no Front-Cover Texts and no Back-Cover Texts.  A copy
718             of the license can be found under
719           <filename>/usr/share/common-licenses/FDL</filename>.</para> -->
720
721         </refsect1>
722       </refentry>
723
724         <!-- Keep this comment at the end of the file
725               Local variables:
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