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>Nov 4, 2006</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>2002,2003,2004,2005</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 <arg choice=opt><replaceable>OPTIONS</replaceable></arg> 49 <group rep=repeat> 50 <arg><replaceable>infile.wav</replaceable></arg> 51 <arg><replaceable>infile.aiff</replaceable></arg> 52 <arg><replaceable>infile.raw</replaceable></arg> 53 <arg><replaceable>infile.flac</replaceable></arg> 54 <arg><replaceable>infile.oga</replaceable></arg> 55 <arg><replaceable>infile.ogg</replaceable></arg> 56 <arg>-</arg> 57 </group> 58 </cmdsynopsis> 59 <cmdsynopsis> 60 <command>flac</command> 61 <group> 62 <arg>-d</arg> <arg>--decode</arg> 63 <arg>-t</arg> <arg>--test</arg> 64 <arg>-a</arg> <arg>--analyze</arg> 65 </group> 66 <arg choice=opt><replaceable>OPTIONS</replaceable></arg> 67 <group rep=repeat> 68 <arg><replaceable>infile.flac</replaceable></arg> 69 <arg><replaceable>infile.oga</replaceable></arg> 70 <arg><replaceable>infile.ogg</replaceable></arg> 71 <arg>-</arg> 72 </group> 73 </cmdsynopsis> 74 </refsynopsisdiv> 75 <refsect1> 76 <title>DESCRIPTION</title> 77 78 <para><command>flac</command> is a command-line tool for encoding, decoding, testing and analyzing FLAC streams.</para> 79 80 </refsect1> 81 <refsect1> 82 <title>OPTIONS</title> 83 84 <para>A summary of options is included below. For a complete 85 description, see the HTML documentation.</para> 86 87 <refsect2> 88 <title>General Options</title> 89 90 <variablelist> 91 <varlistentry> 92 <term><option>-v</option>, <option>--version</option></term> 93 <listitem> 94 <para>Show the flac version number</para> 95 </listitem> 96 </varlistentry> 97 98 <varlistentry> 99 <term><option>-h</option>, <option>--help</option> 100 </term> 101 <listitem> 102 <para>Show basic usage and a list of all options</para> 103 </listitem> 104 </varlistentry> 105 106 <varlistentry> 107 <term><option>-H</option>, <option>--explain</option> 108 </term> 109 <listitem> 110 <para>Show detailed explanation of usage and all options</para> 111 </listitem> 112 </varlistentry> 113 114 <varlistentry> 115 <term><option>-d</option>, <option>--decode</option> 116 </term> 117 <listitem> 118 <para>Decode (the default behavior is to encode)</para> 119 </listitem> 120 </varlistentry> 121 122 <varlistentry> 123 <term><option>-t</option>, <option>--test</option> 124 </term> 125 <listitem> 126 <para>Test a flac encoded file (same as -d except no decoded file is written)</para> 127 </listitem> 128 </varlistentry> 129 130 <varlistentry> 131 <term><option>-a</option>, <option>--analyze</option> 132 </term> 133 <listitem> 134 <para>Analyze a FLAC encoded file (same as -d except an analysis file is written)</para> 135 </listitem> 136 </varlistentry> 137 138 <varlistentry> 139 <term><option>-c</option>, <option>--stdout</option> 140 </term> 141 <listitem> 142 <para>Write output to stdout</para> 143 </listitem> 144 </varlistentry> 145 146 <varlistentry> 147 <term><option>-s</option>, <option>--silent</option> 148 </term> 149 <listitem> 150 <para>Silent mode (do not write runtime encode/decode statistics to stderr)</para> 151 </listitem> 152 </varlistentry> 153 154 <varlistentry> 155 <term><option>--totally-silent</option> 156 </term> 157 <listitem> 158 <para>Do not print anything of any kind, including warnings or errors. The exit code will be the only way to determine successful completion.</para> 159 </listitem> 160 </varlistentry> 161 162 <varlistentry> 163 <term><option>--no-utf8-convert</option> 164 </term> 165 <listitem> 166 <para>Do not convert tags from local charset to UTF-8. This is useful for scripts, and setting tags in situations where the locale is wrong. This option must appear before any tag options!</para> 167 </listitem> 168 </varlistentry> 169 170 <varlistentry> 171 <term><option>-w</option>, <option>--warnings-as-errors</option> 172 </term> 173 <listitem> 174 <para>Treat all warnings as errors (which cause flac to terminate with a non-zero exit code).</para> 175 </listitem> 176 </varlistentry> 177 178 <varlistentry> 179 <term><option>-f</option>, <option>--force</option> 180 </term> 181 <listitem> 182 <para>Force overwriting of output files. By default, flac warns that the output file already exists and continues to the next file.</para> 183 </listitem> 184 </varlistentry> 185 186 <varlistentry> 187 <term><option>-o</option> <replaceable>filename</replaceable>, <option>--output-name</option>=<replaceable>filename</replaceable></term> 188 <listitem> 189 <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> 190 </listitem> 191 </varlistentry> 192 193 <varlistentry> 194 <term><option>--output-prefix</option>=<replaceable>string</replaceable></term> 195 <listitem> 196 <para>Prefix each output file name with the given string. This can be useful for encoding or decoding files to a different directory. Make sure if your string is a path name that it ends with a trailing `/' (slash).</para> 197 </listitem> 198 </varlistentry> 199 200 <varlistentry> 201 <term><option>--delete-input-file</option> 202 </term> 203 <listitem> 204 <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> 205 </listitem> 206 </varlistentry> 207 208 <varlistentry> 209 <term><option>--keep-foreign-metadata</option> 210 </term> 211 <listitem> 212 <para>If encoding, save WAVE or AIFF non-audio chunks in FLAC metadata. If decoding, restore any saved non-audio chunks from FLAC metadata when writing the decoded file. Foreign metadata cannot be transcoded, e.g. WAVE chunks saved in a FLAC file cannot be restored when decoding to AIFF. Input and output must be regular files (not stdin or stdout).</para> 213 </listitem> 214 </varlistentry> 215 216 <varlistentry> 217 <term><option>--skip</option>={<replaceable>#</replaceable>|<replaceable>mm:ss.ss</replaceable>}</term> 218 <listitem> 219 <para>Skip over the first number of samples of the input. This works for both encoding and decoding, but not testing. The alternative form mm:ss.ss can be used to specify minutes, seconds, and fractions of a second.</para> 220 </listitem> 221 </varlistentry> 222 223 <varlistentry> 224 <term><option>--until</option>={<replaceable>#</replaceable>|[<replaceable>+</replaceable>|<replaceable>-</replaceable>]<replaceable>mm:ss.ss</replaceable>}</term> 225 <listitem> 226 <para>Stop at the given sample number for each input file. This works for both encoding and decoding, but not testing. The given sample number is not included in the decoded output. The alternative form mm:ss.ss can be used to specify minutes, seconds, and fractions of a second. If a `+' (plus) sign is at the beginning, the --until point is relative to the --skip point. If a `-' (minus) sign is at the beginning, the --until point is relative to end of the audio.</para> 227 </listitem> 228 </varlistentry> 229 230 <varlistentry> 231 <term><option>--ogg</option></term> 232 233 <listitem> 234 <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 '.oga' extension and will still be decodable by flac.</para> 235 <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 '.oga' or '.ogg'.</para> 236 </listitem> 237 </varlistentry> 238 239 <varlistentry> 240 <term><option>--serial-number</option>=<replaceable>#</replaceable></term> 241 242 <listitem> 243 <para>When used with --ogg, specifies the serial number to use for the first Ogg FLAC stream, which is then incremented for each additional stream. When encoding and no serial number is given, flac uses a random number for the first stream, then increments it for each additional stream. When decoding and no number is given, flac uses the serial number of the first page.</para> 244 </listitem> 245 </varlistentry> 246 247 </variablelist> 248 </refsect2> 249 250 <refsect2> 251 <title>Analysis Options</title> 252 253 <variablelist> 254 <varlistentry> 255 <term><option>--residual-text</option> 256 </term> 257 <listitem> 258 <para>Includes the residual signal in the analysis file. This will make the file very big, much larger than even the decoded file.</para> 259 </listitem> 260 </varlistentry> 261 262 <varlistentry> 263 <term><option>--residual-gnuplot</option> 264 </term> 265 <listitem> 266 <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> 267 </listitem> 268 </varlistentry> 269 270 </variablelist> 271 </refsect2> 272 273 <refsect2> 274 <title>Decoding Options</title> 275 276 <variablelist> 277 <varlistentry> 278 <term><option>--cue=[<replaceable>#.#</replaceable>][-[<replaceable>#.#</replaceable>]]</option></term> 279 <listitem> 280 <para>Set the beginning and ending cuepoints to decode. The optional first #.# is the track and index point at which decoding will start; the default is the beginning of the stream. The optional second #.# is the track and index point at which decoding will end; the default is the end of the stream. If the cuepoint does not exist, the closest one before it (for the start point) or after it (for the end point) will be used. If those don't exist, the start of the stream (for the start point) or end of the stream (for the end point) will be used. The cuepoints are merely translated into sample numbers then used as --skip and --until. A CD track can always be cued by, for example, --cue=9.1-10.1 for track 9, even if the CD has no 10th track.</para> 281 </listitem> 282 </varlistentry> 283 284 <varlistentry> 285 <term><option>-F</option>, <option>--decode-through-errors</option> 286 </term> 287 <listitem> 288 <para>By default flac stops decoding with an error and removes the partially decoded file if it encounters a bitstream error. With -F, errors are still printed but flac will continue decoding to completion. Note that errors may cause the decoded audio to be missing some samples or have silent sections.</para> 289 </listitem> 290 </varlistentry> 291 292 </variablelist> 293 </refsect2> 294 295 <refsect2> 296 <title>Encoding Options</title> 297 298 <variablelist> 299 <varlistentry> 300 <term><option>-V</option>, <option>--verify</option></term> 301 302 <listitem> 303 <para>Verify a correct encoding by decoding the output in parallel and comparing to the original</para> 304 </listitem> 305 </varlistentry> 306 307 <varlistentry> 308 <term><option>--lax</option></term> 309 310 <listitem> 311 <para>Allow encoder to generate non-Subset files. The resulting FLAC file may not be streamable or might have trouble being played in all players (especially hardware devices), so you should only use this option in combination with custom encoding options meant for archival.</para> 312 </listitem> 313 </varlistentry> 314 315 <varlistentry> 316 <term><option>--replay-gain</option></term> 317 318 <listitem> 319 <para>Calculate ReplayGain values and store them as FLAC tags, similar to vorbisgain. Title gains/peaks will be computed for each input file, and an album gain/peak will be computed for all files. All input files must have the same resolution, sample rate, and number of channels. Only mono and stereo files are allowed, and the sample rate must be one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, or 48 kHz. Also note that this option may leave a few extra bytes in a PADDING block as the exact size of the tags is not known until all files are processed. Note that this option cannot be used when encoding to standard output (stdout).</para> 320 </listitem> 321 </varlistentry> 322 323 <varlistentry> 324 <term><option>--cuesheet</option>=<replaceable>filename</replaceable></term> 325 326 <listitem> 327 <para>Import the given cuesheet file and store it in a CUESHEET metadata block. This option may only be used when encoding a single file. A seekpoint will be added for each index point in the cuesheet to the SEEKTABLE unless --no-cued-seekpoints is specified.</para> 328 </listitem> 329 </varlistentry> 330 331 <varlistentry> 332 <term><option>--picture</option>={<replaceable>FILENAME</replaceable>|<replaceable>SPECIFICATION</replaceable>}</term> 333 334 <listitem> 335 <para>Import a picture and store it in a PICTURE metadata block. More than one --picture command can be specified. Either a filename for the picture file or a more complete specification form can be used. The SPECIFICATION is a string whose parts are separated by | (pipe) characters. Some parts may be left empty to invoke default values. FILENAME is just shorthand for "||||FILENAME". The format of SPECIFICATION is</para> 336 <para>[TYPE]|[MIME-TYPE]|[DESCRIPTION]|[WIDTHxHEIGHTxDEPTH[/COLORS]]|FILE</para> 337 <para>TYPE is optional; it is a number from one of:</para> 338 <para>0: Other</para> 339 <para>1: 32x32 pixels 'file icon' (PNG only)</para> 340 <para>2: Other file icon</para> 341 <para>3: Cover (front)</para> 342 <para>4: Cover (back)</para> 343 <para>5: Leaflet page</para> 344 <para>6: Media (e.g. label side of CD)</para> 345 <para>7: Lead artist/lead performer/soloist</para> 346 <para>8: Artist/performer</para> 347 <para>9: Conductor</para> 348 <para>10: Band/Orchestra</para> 349 <para>11: Composer</para> 350 <para>12: Lyricist/text writer</para> 351 <para>13: Recording Location</para> 352 <para>14: During recording</para> 353 <para>15: During performance</para> 354 <para>16: Movie/video screen capture</para> 355 <para>17: A bright coloured fish</para> 356 <para>18: Illustration</para> 357 <para>19: Band/artist logotype</para> 358 <para>20: Publisher/Studio logotype</para> 359 <para>The default is 3 (front cover). There may only be one picture each of type 1 and 2 in a file.</para> 360 361 <para>MIME-TYPE is optional; if left blank, it will be detected from the file. For best compatibility with players, use pictures with MIME type image/jpeg or image/png. The MIME type can also be --> to mean that FILE is actually a URL to an image, though this use is discouraged.</para> 362 363 <para>DESCRIPTION is optional; the default is an empty string.</para> 364 365 <para>The next part specfies the resolution and color information. If the MIME-TYPE is image/jpeg, image/png, or image/gif, you can usually leave this empty and they can be detected from the file. Otherwise, you must specify the width in pixels, height in pixels, and color depth in bits-per-pixel. If the image has indexed colors you should also specify the number of colors used. When manually specified, it is not checked against the file for accuracy.</para> 366 367 <para>FILE is the path to the picture file to be imported, or the URL if MIME type is --></para> 368 369 <para>For example, "|image/jpeg|||../cover.jpg" will embed the JPEG file at ../cover.jpg, defaulting to type 3 (front cover) and an empty description. The resolution and color info will be retrieved from the file itself.</para> 370 371 <para>The specification "4|-->|CD|320x300x24/173|http://blah.blah/backcover.tiff" will embed the given URL, with type 4 (back cover), description "CD", and a manually specified resolution of 320x300, 24 bits-per-pixel, and 173 colors. The file at the URL will not be fetched; the URL itself is stored in the PICTURE metadata block.</para> 372 </listitem> 373 </varlistentry> 374 375 <varlistentry> 376 <term><option>--sector-align</option></term> 377 378 <listitem> 379 <para>Align encoding of multiple CD format files on sector boundaries. See the HTML documentation for more information.</para> 380 </listitem> 381 </varlistentry> 382 383 <varlistentry> 384 <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> 385 386 <listitem> 387 <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. Using #s, a seekpoint will be added every # seconds (# does not have to be a whole number; it can be, for example, 9.5, meaning a seekpoint every 9.5 seconds). 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 10s'. Use --no-seektable for no SEEKTABLE. Note: '-S #x' and '-S #s' 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> 388 </listitem> 389 </varlistentry> 390 391 <varlistentry> 392 <term><option>-P</option> <replaceable>#</replaceable>, <option>--padding</option>=<replaceable>#</replaceable></term> 393 394 <listitem> 395 <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 --no-padding. The encoder writes a PADDING block of 8192 bytes by default (or 65536 bytes if the input audio stream is more that 20 minutes long).</para> 396 </listitem> 397 </varlistentry> 398 399 <varlistentry> 400 <term><option>-T</option> <replaceable>FIELD=VALUE</replaceable>, <option>--tag</option>=<replaceable>FIELD=VALUE</replaceable></term> 401 402 <listitem> 403 <para>Add a FLAC tag. The comment must adhere to the Vorbis comment spec; i.e. the FIELD must contain only legal characters, terminated by an 'equals' sign. Make sure to quote the comment if necessary. This option may appear more than once to add several comments. NOTE: all tags will be added to all encoded files.</para> 404 </listitem> 405 </varlistentry> 406 407 <varlistentry> 408 <term><option>--tag-from-file</option>=<replaceable>FIELD=FILENAME</replaceable></term> 409 410 <listitem> 411 <para>Like --tag, except FILENAME is a file whose contents will be read verbatim to set the tag value. The contents will be converted to UTF-8 from the local charset. This can be used to store a cuesheet in a tag (e.g. --tag-from-file="CUESHEET=image.cue"). Do not try to store binary data in tag fields! Use APPLICATION blocks for that.</para> 412 </listitem> 413 </varlistentry> 414 415 <varlistentry> 416 <term><option>-b</option> <replaceable>#</replaceable>, <option>--blocksize</option>=<replaceable>#</replaceable></term> 417 418 <listitem> 419 <para>Specify the block size in samples. Subset streams must use one of 192, 576, 1152, 2304, 4608, 256, 512, 1024, 2048, 4096 (and 8192 or 16384 if the sample rate is >48kHz).</para> 420 </listitem> 421 </varlistentry> 422 423 <varlistentry> 424 <term><option>-m</option>, <option>--mid-side</option></term> 425 426 <listitem> 427 <para>Try mid-side coding for each frame (stereo input only)</para> 428 </listitem> 429 </varlistentry> 430 431 <varlistentry> 432 <term><option>-M</option>, <option>--adaptive-mid-side</option></term> 433 434 <listitem> 435 <para>Adaptive mid-side coding for all frames (stereo input only)</para> 436 </listitem> 437 </varlistentry> 438 439 <varlistentry> 440 <term><option>-0</option>..<option>-8</option>, <option>--compression-level-0</option>..<option>--compression-level-8</option></term> 441 442 <listitem> 443 <para>Fastest compression..highest compression (default is -5). These are synonyms for other options:</para> 444 445 <variablelist> 446 <varlistentry> 447 <term><option>-0</option>, <option>--compression-level-0</option></term> 448 449 <listitem> 450 <para>Synonymous with -l 0 -b 1152 -r 3</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 3</para> 459 </listitem> 460 </varlistentry> 461 462 <varlistentry> 463 <term><option>-2</option>, <option>--compression-level-2</option></term> 464 465 <listitem> 466 <para>Synonymous with -l 0 -b 1152 -m -r 3</para> 467 </listitem> 468 </varlistentry> 469 470 <varlistentry> 471 <term><option>-3</option>, <option>--compression-level-3</option></term> 472 473 <listitem> 474 <para>Synonymous with -l 6 -b 4096 -r 4</para> 475 </listitem> 476 </varlistentry> 477 478 <varlistentry> 479 <term><option>-4</option>, <option>--compression-level-4</option></term> 480 481 <listitem> 482 <para>Synonymous with -l 8 -b 4096 -M -r 4</para> 483 </listitem> 484 </varlistentry> 485 486 <varlistentry> 487 <term><option>-5</option>, <option>--compression-level-5</option></term> 488 489 <listitem> 490 <para>Synonymous with -l 8 -b 4096 -m -r 5</para> 491 </listitem> 492 </varlistentry> 493 494 <varlistentry> 495 <term><option>-6</option>, <option>--compression-level-6</option></term> 496 497 <listitem> 498 <para>Synonymous with -l 8 -b 4096 -m -r 6</para> 499 </listitem> 500 </varlistentry> 501 502 <varlistentry> 503 <term><option>-7</option>, <option>--compression-level-7</option></term> 504 505 <listitem> 506 <para>Synonymous with -l 8 -b 4096 -m -e -r 6</para> 507 </listitem> 508 </varlistentry> 509 510 <varlistentry> 511 <term><option>-8</option>, <option>--compression-level-8</option></term> 512 513 <listitem> 514 <para>Synonymous with -l 12 -b 4096 -m -e -r 6</para> 515 </listitem> 516 </varlistentry> 517 </variablelist> 518 519 </listitem> 520 521 </varlistentry> 522 523 <varlistentry> 524 <term><option>--fast</option></term> 525 526 <listitem> 527 <para>Fastest compression. Currently synonymous with -0.</para> 528 </listitem> 529 </varlistentry> 530 531 <varlistentry> 532 <term><option>--best</option></term> 533 534 <listitem> 535 <para>Highest compression. Currently synonymous with -8.</para> 536 </listitem> 537 </varlistentry> 538 539 <varlistentry> 540 <term><option>-e</option>, <option>--exhaustive-model-search</option></term> 541 542 <listitem> 543 <para>Do exhaustive model search (expensive!)</para> 544 </listitem> 545 </varlistentry> 546 547 <varlistentry> 548 <term><option>-A</option> <replaceable>function</replaceable>, <option>--apodization</option>=<replaceable>function</replaceable></term> 549 550 <listitem> 551 <para>Window audio data with given the apodization function. The functions are: bartlett, bartlett_hann, blackman, blackman_harris_4term_92db, connes, flattop, gauss(STDDEV), hamming, hann, kaiser_bessel, nuttall, rectangle, triangle, tukey(P), welch.</para> 552 <para>For gauss(STDDEV), STDDEV is the standard deviation (0<STDDEV<=0.5).</para> 553 <para>For tukey(P), P specifies the fraction of the window that is tapered (0<=P<=1; P=0 corresponds to "rectangle" and P=1 corresponds to "hann").</para> 554 <para>More than one -A option (up to 32) may be used. Any function that is specified erroneously is silently dropped. The encoder chooses suitable defaults in the absence of any -A options; any -A option specified replaces the default(s).</para> 555 <para>When more than one function is specified, then for every subframe the encoder will try each of them separately and choose the window that results in the smallest compressed subframe. Multiple functions can greatly increase the encoding time.</para> 556 </listitem> 557 </varlistentry> 558 559 <varlistentry> 560 <term><option>-l</option> <replaceable>#</replaceable>, <option>--max-lpc-order</option>=<replaceable>#</replaceable></term> 561 562 <listitem> 563 <para>Specifies the maximum LPC order. This number must be <= 32. For Subset streams, it must be <=12 if the sample rate is <=48kHz. If 0, the encoder will not attempt generic linear prediction, and use only fixed predictors. Using fixed predictors is faster but usually results in files being 5-10% larger.</para> 564 </listitem> 565 </varlistentry> 566 567 <varlistentry> 568 <term><option>-p</option>, <option>--qlp-coeff-precision-search</option></term> 569 570 <listitem> 571 <para>Do exhaustive search of LP coefficient quantization (expensive!). Overrides -q; does nothing if using -l 0</para> 572 </listitem> 573 </varlistentry> 574 575 <varlistentry> 576 <term><option>-q</option> <replaceable>#</replaceable>, <option>--qlp-coeff-precision</option>=<replaceable>#</replaceable></term> 577 578 <listitem> 579 <para>Precision of the quantized linear-predictor coefficients, 0 => let encoder decide (min is 5, default is 0)</para> 580 </listitem> 581 </varlistentry> 582 583 <varlistentry> 584 <term><option>-r</option> [<replaceable>#</replaceable>,]<replaceable>#</replaceable>, <option>--rice-partition-order</option>=[<replaceable>#</replaceable>,]<replaceable>#</replaceable></term> 585 586 <listitem> 587 <para>Set the [min,]max residual partition order (0..16). min defaults to 0 if unspecified. Default is -r 5.</para> 588 </listitem> 589 </varlistentry> 590 591 </variablelist> 592 593 </refsect2> 594 <refsect2> 595 <title>Format Options</title> 596 597 <variablelist> 598 <varlistentry> 599 <term><option>--endian</option>={<replaceable>big</replaceable>|<replaceable>little</replaceable>}</term> 600 601 <listitem> 602 <para>Set the byte order for samples</para> 603 </listitem> 604 </varlistentry> 605 606 <varlistentry> 607 <term><option>--channels</option>=<replaceable>#</replaceable></term> 608 609 <listitem> 610 <para>Set number of channels.</para> 611 </listitem> 612 </varlistentry> 613 614 <varlistentry> 615 <term><option>--bps</option>=<replaceable>#</replaceable></term> 616 617 <listitem> 618 <para>Set bits per sample.</para> 619 </listitem> 620 </varlistentry> 621 622 <varlistentry> 623 <term><option>--sample-rate</option>=<replaceable>#</replaceable></term> 624 625 <listitem> 626 <para>Set sample rate (in Hz).</para> 627 </listitem> 628 </varlistentry> 629 630 <varlistentry> 631 <term><option>--sign</option>={<replaceable>signed</replaceable>|<replaceable>unsigned</replaceable>}</term> 632 633 <listitem> 634 <para>Set the sign of samples (the default is signed).</para> 635 </listitem> 636 </varlistentry> 637 638 <varlistentry> 639 <term><option>--input-size</option>=<replaceable>#</replaceable></term> 640 641 <listitem> 642 <para>Specify the size of the raw input in bytes. If you are encoding raw samples from stdin, you must set this option in order to be able to use --skip, --until, --cue-sheet, or other options that need to know the size of the input beforehand. If the size given is greater than what is found in the input stream, the encoder will complain about an unexpected end-of-file. If the size given is less, samples will be truncated.</para> 643 </listitem> 644 </varlistentry> 645 646 <varlistentry> 647 <term><option>--force-aiff-format</option></term> 648 649 <listitem> 650 <para>Force the decoder to output AIFF format. This option is not needed if the output filename (as set by -o) ends with <filename>.aiff</filename>. Also, this option has no 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) to be treated as raw samples (even if filename ends in <filename>.wav</filename>).</para> 659 </listitem> 660 </varlistentry> 661 662 </variablelist> 663 </refsect2> 664 665 <refsect2> 666 <title>Negative Options</title> 667 668 <variablelist> 669 <varlistentry> 670 <term><option>--no-adaptive-mid-side</option></term> 671 <term><option>--no-decode-through-errors</option></term> 672 <term><option>--no-delete-input-file</option></term> 673 <term><option>--no-exhaustive-model-search</option></term> 674 <term><option>--no-lax</option></term> 675 <term><option>--no-mid-side</option></term> 676 <term><option>--no-ogg</option></term> 677 <term><option>--no-padding</option></term> 678 <term><option>--no-qlp-coeff-precision-search</option></term> 679 <term><option>--no-residual-gnuplot</option></term> 680 <term><option>--no-residual-text</option></term> 681 <term><option>--no-sector-align</option></term> 682 <term><option>--no-seektable</option></term> 683 <term><option>--no-silent</option></term> 684 <term><option>--no-verify</option></term> 685 <term><option>--no-warnings-as-errors</option></term> 686 <listitem> 687 <para>These flags can be used to invert the sense of the corresponding normal option.</para> 688 </listitem> 689 </varlistentry> 690 </variablelist> 691 692 </refsect2> 693 694 </refsect1> 695 <refsect1> 696 <title>SEE ALSO</title> 697 698 <para>metaflac(1).</para> 699 700 <para>The programs are documented fully by HTML format documentation, available in <filename>/usr/share/doc/flac/html</filename> on &debian; systems.</para> 701 </refsect1> 702 <refsect1> 703 <title>AUTHOR</title> 704 705 <para>This manual page was written by &dhusername; &dhemail; for the &debian; system (but may be used by others).</para> 706 707 <!-- <para>Permission is granted to copy, distribute and/or modify this document under the terms of the <acronym>GNU</acronym> Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. A copy of the license can be found under <filename>/usr/share/common-licenses/FDL</filename>.</para> --> 708 709 </refsect1> 710</refentry> 711 712<!-- Keep this comment at the end of the file 713 Local variables: 714 mode: sgml 715 sgml-omittag:t 716 sgml-shorttag:t 717 sgml-minimize-attributes:nil 718 sgml-always-quote-attributes:t 719 sgml-indent-step:2 720 sgml-indent-data:t 721 sgml-parent-document:nil 722 sgml-default-dtd-file:nil 723 sgml-exposed-tags:nil 724 sgml-local-catalogs:nil 725 sgml-local-ecat-files:nil 726 End: 727 --> 728
