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METAFLAC(1) METAFLAC(1)

NAME
metaflac - program to list, add, remove, or edit metadata in one or more FLAC files.

SYNOPSIS
metaflac [ options ] [ operations ] FLACfile ...

DESCRIPTION
Use metaflac to list, add, remove, or edit metadata in one or more FLAC files. You may perform one major operation, or
many shorthand operations at a time.

OPTIONS
--preserve-modtime
Preserve the original modification time in spite of edits.

--with-filename
Prefix each output line with the FLAC file name (the default if more than one FLAC file is specified).

--no-filename
Do not prefix each output line with the FLAC file name (the default if only one FLAC file is specified).

--no-utf8-convert
Do not convert tags from UTF-8 to local charset, or vice versa. This is useful for scripts, and setting tags in
situations where the locale is wrong.

--dont-use-padding
By default metaflac tries to use padding where possible to avoid rewriting the entire file if the metadata size
changes. Use this option to tell metaflac to not take advantage of padding this way.

SHORTHAND OPERATIONS
--show-md5sum
Show the MD5 signature from the STREAMINFO block.

--show-min-blocksize
Show the minimum block size from the STREAMINFO block.

--show-max-blocksize
Show the maximum block size from the STREAMINFO block.

--show-min-framesize
Show the minimum frame size from the STREAMINFO block.

--show-max-framesize
Show the maximum frame size from the STREAMINFO block.

--show-sample-rate
Show the sample rate from the STREAMINFO block.

--show-channels
Show the number of channels from the STREAMINFO block.

--show-bps
Show the # of bits per sample from the STREAMINFO block.

--show-total-samples
Show the total # of samples from the STREAMINFO block.

--show-vendor-tag
Show the vendor string from the VORBIS_COMMENT block.

--show-tag=name
Show all tags where the the field name matches 'name'.

--remove-tag=name
Remove all tags whose field name is 'name'.

--remove-first-tag=name
Remove first tag whose field name is 'name'.

--remove-all-tags
Remove all tags, leaving only the vendor string.

--set-tag=field
Add a tag. The field must comply with the Vorbis comment spec, of the form "NAME=VALUE". If there is currently
no tag block, one will be created.

--set-tag-from-file=field
Like --set-tag, except the VALUE is a filename whose contents will be read verbatim to set the tag value. Unless
--no-utf8-convert is specified, 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. --set-tag-from-file="CUESHEET=image.cue"). Do not try to store binary data in
tag fields! Use APPLICATION blocks for that.

--import-tags-from=file
Import tags from a file. Use '-' for stdin. Each line should be of the form NAME=VALUE. Multi-line comments are
currently not supported. Specify --remove-all-tags and/or --no-utf8-convert before --import-tags-from if neces-
sary. If FILE is '-' (stdin), only one FLAC file may be specified.

--export-tags-to=file
Export tags to a file. Use '-' for stdout. Each line will be of the form NAME=VALUE. Specify --no-utf8-convert
if necessary.

--import-cuesheet-from=file
Import a cuesheet from a file. Use '-' for stdin. Only one FLAC file may be specified. A seekpoint will be
added for each index point in the cuesheet to the SEEKTABLE unless --no-cued-seekpoints is specified.

--export-cuesheet-to=file
Export CUESHEET block to a cuesheet file, suitable for use by CD authoring software. Use '-' for stdout. Only
one FLAC file may be specified on the command line.

--import-picture-from={FILENAME|SPECIFICATION}
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 SPECI-
FICATION 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

[TYPE]|[MIME-TYPE]|[DESCRIPTION]|[WIDTHxHEIGHTxDEPTH[/COLORS]]|FILE

TYPE is optional; it is a number from one of:

0: Other

1: 32x32 pixels 'file icon' (PNG only)

2: Other file icon

3: Cover (front)

4: Cover (back)

5: Leaflet page

6: Media (e.g. label side of CD)

7: Lead artist/lead performer/soloist

8: Artist/performer

9: Conductor

10: Band/Orchestra

11: Composer

12: Lyricist/text writer

13: Recording Location

14: During recording

15: During performance

16: Movie/video screen capture

17: A bright coloured fish

18: Illustration

19: Band/artist logotype

20: Publisher/Studio logotype

The default is 3 (front cover). There may only be one picture each of type 1 and 2 in a file.

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.

DESCRIPTION is optional; the default is an empty string.

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.

FILE is the path to the picture file to be imported, or the URL if MIME type is -->

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.

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.

--export-picture-to=file
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.

--add-replay-gain
Calculates the title and album gains/peaks of the given FLAC files as if all the files were part of one album,
then stores them as FLAC tags. The tags are the same as those used by vorbisgain. Existing ReplayGain tags will
be replaced. If only one FLAC file is given, the album and title gains will be the same. Since this operation
requires two passes, it is always executed last, after all other operations have been completed and written to
disk. All FLAC files specified must have the same resolution, sample rate, and number of channels. The sample
rate must be one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, or 48 kHz.

--remove-replay-gain
Removes the ReplayGain tags.

--add-seekpoint={#|X|#x|#s}
Add seek points to a SEEKTABLE block. Using #, a seek point at that sample number is added. Using X, a place-
holder 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). If no SEEKTABLE block exists, one will be cre-
ated. If one already exists, points will be added to the existing table, and any duplicates will be turned into
placeholder points. You may use many --add-seekpoint options; the resulting SEEKTABLE will be the unique-ified
union of all such values. Example: --add-seekpoint=100x --add-seekpoint=3.5s will add 100 evenly spaced seek-
points and a seekpoint every 3.5 seconds.

--add-padding=length
Add a padding block of the given length (in bytes). The overall length of the new block will be 4 + length; the
extra 4 bytes is for the metadata block header.

MAJOR OPERATIONS
--list List the contents of one or more metadata blocks to stdout. By default, all metadata blocks are listed in text
format. Use the following options to change this behavior:

--block-number=#[,#[...]]
An optional comma-separated list of block numbers to display. The first block, the STREAMINFO block, is
block 0.

--block-type=type[,type[...]]

--except-block-type=type[,type[...]]
An optional comma-separated list of block types to be included or ignored with this option. Use only one
of --block-type or --except-block-type. The valid block types are: STREAMINFO, PADDING, APPLICATION, SEEK-
TABLE, VORBIS_COMMENT. You may narrow down the types of APPLICATION blocks displayed as follows:

APPLICATION:abcd The APPLICATION block(s) whose textual repre- sentation of the 4-byte ID is "abcd"
APPLICATION:0xXXXXXXXX The APPLICATION block(s) whose hexadecimal big- endian representation of the 4-byte
ID is "0xXXXXXXXX". For the example "abcd" above the hexadecimal equivalalent is 0x61626364

Note: if both --block-number and --[except-]block-type are specified, the result is the logical AND of both
arguments.

--application-data-format=hexdump|text
If the application block you are displaying contains binary data but your --data-format=text, you can dis-
play a hex dump of the application data contents instead using --application-data-format=hexdump.

--remove
Remove one or more metadata blocks from the metadata. Unless --dont-use-padding is specified, the blocks will be
replaced with padding. You may not remove the STREAMINFO block.

--block-number=#[,#[...]]

--block-type=type[,type[...]]

--except-block-type=type[,type[...]]
See --list above for usage.

Note: if both --block-number and --[except-]block-type are specified, the result is the logical AND of both
arguments.

--remove-all
Remove all metadata blocks (except the STREAMINFO block) from the metadata. Unless --dont-use-padding is speci-
fied, the blocks will be replaced with padding.

--merge-padding
Merge adjacent PADDING blocks into single blocks.

--sort-padding
Move all PADDING blocks to the end of the metadata and merge them into a single block.