305 lines
11 KiB
Groff
305 lines
11 KiB
Groff
.\" This manpage has been automatically generated by docbook2man
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.\" from a DocBook document. This tool can be found at:
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.\" <http://shell.ipoline.com/~elmert/comp/docbook2X/>
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.\" Please send any bug reports, improvements, comments, patches,
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.\" etc. to Steve Cheng <steve@ggi-project.org>.
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.TH "METAFLAC" "1" "2013/04/30" "" ""
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.SH NAME
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metaflac \- program to list, add, remove, or edit metadata in one or more FLAC files.
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.SH SYNOPSIS
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\fBmetaflac\fR [ \fB\fIoptions\fB\fR ] [ \fB\fIoperations\fB\fR ] \fB\fIFLACfile\fB\fR\fI ...\fR
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.SH "DESCRIPTION"
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.PP
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Use \fBmetaflac\fR to list, add, remove, or edit
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metadata in one or more FLAC files. You may perform one major operation,
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or many shorthand operations at a time.
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.SH "OPTIONS"
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.TP
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\fB--preserve-modtime\fR
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Preserve the original modification time in spite of edits.
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.TP
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\fB--with-filename\fR
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Prefix each output line with the FLAC file name (the default if
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more than one FLAC file is specified).
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.TP
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\fB--no-filename\fR
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Do not prefix each output line with the FLAC file name (the default
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if only one FLAC file is specified).
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.TP
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\fB--no-utf8-convert\fR
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Do not convert tags from UTF-8 to local charset, or vice versa. This is
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useful for scripts, and setting tags in situations where the locale is wrong.
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.TP
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\fB--dont-use-padding\fR
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By default metaflac tries to use padding where possible to avoid
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rewriting the entire file if the metadata size changes. Use this
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option to tell metaflac to not take advantage of padding this way.
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.SH "SHORTHAND OPERATIONS"
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.TP
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\fB--show-md5sum\fR
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Show the MD5 signature from the STREAMINFO block.
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.TP
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\fB--show-min-blocksize\fR
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Show the minimum block size from the STREAMINFO block.
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.TP
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\fB--show-max-blocksize\fR
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Show the maximum block size from the STREAMINFO block.
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.TP
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\fB--show-min-framesize\fR
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Show the minimum frame size from the STREAMINFO block.
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.TP
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\fB--show-max-framesize\fR
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Show the maximum frame size from the STREAMINFO block.
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.TP
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\fB--show-sample-rate\fR
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Show the sample rate from the STREAMINFO block.
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.TP
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\fB--show-channels\fR
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Show the number of channels from the STREAMINFO block.
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.TP
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\fB--show-bps\fR
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Show the # of bits per sample from the STREAMINFO block.
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.TP
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\fB--show-total-samples\fR
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Show the total # of samples from the STREAMINFO block.
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.TP
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\fB--show-vendor-tag\fR
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Show the vendor string from the VORBIS_COMMENT block.
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.TP
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\fB--show-tag=name\fR
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Show all tags where the field name matches 'name'.
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.TP
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\fB--remove-tag=name\fR
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Remove all tags whose field name is 'name'.
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.TP
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\fB--remove-first-tag=name\fR
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Remove first tag whose field name is 'name'.
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.TP
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\fB--remove-all-tags\fR
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Remove all tags, leaving only the vendor string.
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.TP
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\fB--set-tag=field\fR
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Add a tag. The field must comply with the
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Vorbis comment spec, of the form "NAME=VALUE". If there is
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currently no tag block, one will be created.
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.TP
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\fB--set-tag-from-file=field\fR
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Like --set-tag, except the VALUE is a filename whose
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contents will be read verbatim to set the tag value.
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Unless --no-utf8-convert is specified, the contents will be
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converted to UTF-8 from the local charset. This can be used
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to store a cuesheet in a tag (e.g.
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--set-tag-from-file="CUESHEET=image.cue"). Do not try to
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store binary data in tag fields! Use APPLICATION blocks for
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that.
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.TP
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\fB--import-tags-from=file\fR
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Import tags from a file. Use '-' for stdin. Each
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line should be of the form NAME=VALUE. Multi-line comments
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are currently not supported. Specify --remove-all-tags and/or
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--no-utf8-convert before --import-tags-from if necessary. If
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FILE is '-' (stdin), only one FLAC file may be specified.
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.TP
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\fB--export-tags-to=file\fR
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Export tags to a file. Use '-' for stdout. Each
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line will be of the form NAME=VALUE. Specify
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--no-utf8-convert if necessary.
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.TP
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\fB--import-cuesheet-from=file\fR
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Import a cuesheet from a file. Use '-' for stdin. Only one
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FLAC file may be specified. A seekpoint will be added for each
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index point in the cuesheet to the SEEKTABLE unless
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--no-cued-seekpoints is specified.
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.TP
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\fB--export-cuesheet-to=file\fR
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Export CUESHEET block to a cuesheet file, suitable for use by
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CD authoring software. Use '-' for stdout. Only one FLAC file
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may be specified on the command line.
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.TP
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\fB--import-picture-from={\fIFILENAME\fB|\fISPECIFICATION\fB}\fR
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Import a picture and store it in a PICTURE metadata block. More than one --import-picture-from 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
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[TYPE]|[MIME-TYPE]|[DESCRIPTION]|[WIDTHxHEIGHTxDEPTH[/COLORS]]|FILE
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TYPE is optional; it is a number from one of:
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0: Other
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1: 32x32 pixels 'file icon' (PNG only)
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2: Other file icon
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3: Cover (front)
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4: Cover (back)
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5: Leaflet page
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6: Media (e.g. label side of CD)
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7: Lead artist/lead performer/soloist
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8: Artist/performer
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9: Conductor
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10: Band/Orchestra
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11: Composer
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12: Lyricist/text writer
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13: Recording Location
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14: During recording
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15: During performance
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16: Movie/video screen capture
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17: A bright coloured fish
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18: Illustration
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19: Band/artist logotype
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20: Publisher/Studio logotype
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The default is 3 (front cover). There may only be one picture each of type 1 and 2 in a file.
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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.
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DESCRIPTION is optional; the default is an empty string.
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The next part specifies 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.
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FILE is the path to the picture file to be imported, or the URL if MIME type is -->
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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.
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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.
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.TP
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\fB--export-picture-to=file\fR
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Export PICTURE block to a file. Use '-' for stdout. Only one FLAC file may be specified on the command line. The first PICTURE block will be exported unless --export-picture-to is preceded by a --block-number=# option to specify the exact metadata block to extract. Note that the block number is the one shown by --list.
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.TP
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\fB--add-replay-gain\fR
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Calculates the title and album gains/peaks of the given FLAC
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files as if all the files were part of one album, then stores
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them as FLAC tags. The tags are the same as
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those used by vorbisgain. Existing ReplayGain tags will be
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replaced. If only one FLAC file is given, the album and title
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gains will be the same. Since this operation requires two
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passes, it is always executed last, after all other operations
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have been completed and written to disk. All FLAC files
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specified must have the same resolution, sample rate, and
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number of channels. The sample rate must be one of 8, 11.025,
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12, 16, 18.9, 22.05, 24, 28, 32, 37.8, 44.1, 48, 56, 64, 88.2,
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96, 112, 128, 144, 176.4, or 192kHz.
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.TP
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\fB--scan-replay-gain\fR
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Like --add-replay-gain, but only analyzes the files rather than
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writing them to the tags.
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.TP
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\fB--remove-replay-gain\fR
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Removes the ReplayGain tags.
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.TP
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\fB--add-seekpoint={\fI#\fB|\fIX\fB|\fI#x\fB|\fI#s\fB}\fR
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Add seek points to a SEEKTABLE block. Using #, a seek point at
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that sample number is added. Using X, a placeholder point is
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added at the end of a the table. Using #x, # evenly spaced seek
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points will be added, the first being at sample 0. Using #s, a
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seekpoint will be added every # seconds (# does not have to be a
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whole number; it can be, for example, 9.5, meaning a seekpoint
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every 9.5 seconds). If no SEEKTABLE block exists, one will be
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created. If one already exists, points will be added to the
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existing table, and any duplicates will be turned into placeholder
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points. You may use many --add-seekpoint options; the resulting
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SEEKTABLE will be the unique-ified union of all such values.
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Example: --add-seekpoint=100x --add-seekpoint=3.5s will add 100
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evenly spaced seekpoints and a seekpoint every 3.5 seconds.
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.TP
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\fB--add-padding=length\fR
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Add a padding block of the given length (in bytes). The overall
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length of the new block will be 4 + length; the extra 4 bytes is
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for the metadata block header.
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.SH "MAJOR OPERATIONS"
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.TP
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\fB--list\fR
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List the contents of one or more metadata blocks to stdout. By
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default, all metadata blocks are listed in text format. Use the
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following options to change this behavior:
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.RS
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.TP
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\fB--block-number=#[,#[...]]\fR
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An optional comma-separated list of block numbers to display.
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The first block, the STREAMINFO block, is block 0.
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.TP
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\fB--block-type=type[,type[...]]\fR
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.TP
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\fB--except-block-type=type[,type[...]]\fR
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An optional comma-separated list of block types to be included
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or ignored with this option. Use only one of --block-type or
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--except-block-type. The valid block types are: STREAMINFO,
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PADDING, APPLICATION, SEEKTABLE, VORBIS_COMMENT, PICTURE. You
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may narrow down the types of APPLICATION blocks displayed as
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follows:
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APPLICATION:abcd The APPLICATION block(s) whose textual repre-
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sentation of the 4-byte ID is "abcd"
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APPLICATION:0xXXXXXXXX The APPLICATION block(s) whose hexadecimal big-
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endian representation of the 4-byte ID is
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"0xXXXXXXXX". For the example "abcd" above the
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hexadecimal equivalalent is 0x61626364
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.sp
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.RS
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.B "Note:"
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if both --block-number and --[except-]block-type are
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specified, the result is the logical AND of both
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arguments.
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.RE
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.TP
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\fB--application-data-format=hexdump|text\fR
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If the application block you are displaying contains binary
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data but your --data-format=text, you can display a hex dump
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of the application data contents instead using
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--application-data-format=hexdump.
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.RE
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.TP
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\fB--remove\fR
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Remove one or more metadata blocks from the metadata. Unless
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--dont-use-padding is specified, the blocks will be replaced with
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padding. You may not remove the STREAMINFO block.
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.RS
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.TP
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\fB--block-number=#[,#[...]]\fR
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.TP
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\fB--block-type=type[,type[...]]\fR
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.TP
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\fB--except-block-type=type[,type[...]]\fR
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See --list above for usage.
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.sp
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.RS
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.B "Note:"
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if both --block-number and --[except-]block-type are
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specified, the result is the logical AND of both arguments.
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.RE
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.RE
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.TP
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\fB--remove-all\fR
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Remove all metadata blocks (except the STREAMINFO block) from the
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metadata. Unless --dont-use-padding is specified, the blocks will
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be replaced with padding.
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.TP
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\fB--merge-padding\fR
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Merge adjacent PADDING blocks into single blocks.
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.TP
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\fB--sort-padding\fR
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Move all PADDING blocks to the end of the metadata and merge them
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into a single block.
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.SH "SEE ALSO"
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.PP
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flac(1).
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