mp3fs(1) [debian man page]
MP3FS(1) User Commands MP3FS(1) NAME
mp3fs - mounts and transcodes FLACs to MP3s on the fly SYNOPSIS
mp3fs [OPTION]... FLACDIR MP3DIR DESCRIPTION
The mp3fs(1) command will mount the directory FLACDIR on MP3DIR. Thereafter, accessing MP3DIR will show the contents of FLACDIR, with all FLAC files transparently renamed and transcoded to MP3 format upon access. OPTIONS
-b, -obitrate=RATE Set the bitrate to use for encoding. Acceptable values for RATE are any which are allowed by the MP3 format. According to the manual for LAME, this means: For sampling frequencies of 32, 44.1, and 48 kHz, RATE can be among 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, and 320. For sampling frequencies of 16, 22.05, and 24 kHz, RATE can be among 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, and 160. When in doubt, it is recommended to choose a bitrate among 96, 112, 128, 160, 192, 224, 256, and 320. If not specified, RATE defaults to 128. -d, -odebug Enable debug output. This will result in a large quantity of diagnostic information being printed to stderr as the program runs. This option will normally not be used. It implies -f. --gainmode, -ogainmode=MODE Set mode to use for interpreting ReplayGain tags. The allowed values for MODE are: 0 - Ignore all ReplayGain tags. 1 - Prefer album gain tag, but fall back to track gain if album gain is not present. 2 - Use track gain if present. --gainref, -ogainref=REF Set the reference loudness in decibels to adjust ReplayGain tags. ReplayGain software usually defaults to a loudness of 89 dB, but if this is too quiet, a higher value can be set here, causing adjustment of ReplayGain values in tags. -f Run in foreground instead of detaching from the terminal. -h, --help Print usage information. --quality, -oquality=QUALITY Set quality for encoding, as understood by LAME. The slowest and best quality is 0, while 9 is the fastest and worst quality. The default value is 5, although according to the LAME manual, 2 is recommended. -s Force single-threaded operation. -V, --version Output version information. COPYRIGHT
Copyright (C) 2006-2008 David Collett and 2008-2011 Kristofer Henriksson. This is free software: you are free to change and redistribute it under the terms of the GNU General Public License (GPL) version 3 or later. This manual is copyright (C) 2010-2011 Kristofer Henriksson and may be distributed under the same terms. mp3fs 0.31 June 2012 MP3FS(1)
Check Out this Related Man Page
vorbisgain(1) VorbisGain vorbisgain(1) NAME
vorbisgain - calculate the replay gain for Ogg Vorbis files SYNOPSIS
vorbisgain [ -acCdfhqrsv ] [ -g album gain ] input_files ... DESCRIPTION
vorbisgain calculates the ReplayGain values for the named Ogg Vorbis input files and writes back the result in the form of tags (comments) in the file. These values can be used by a playback program to maintain a uniform sound level during play. (See http://www.replaygain.org/ for more information.) vorbisgain uses a default target level of 89 dB, rather than the 83 dB recommended by the ReplayGain standard, when calculating the gain to apply. (Some players include a pre-amplification setting with which the target level can be changed.) vorbisgain input files must be Ogg Vorbis I files with 1 or 2 channels and a sample rate of 48 kHz, 44.1 kHz, 32 kHz, 24 kHz, 22050 Hz, 16 kHz, 12 kHz, 11025 Hz or 8 kHz. If an input file contains multiple streams (i.e., it is chained), the streams must all have the same for- mat, in terms of sampling frequency and number of channels. All streams in a chained file are processed, but the ReplayGain tags are only written to (or removed from) the first stream. OPTIONS
-h, --help Show command help. -a, --album Activates album mode, in which the album gain (sometimes called the audiophile gain) is calculated in addition to the track gain (sometimes called the radio gain). -g n, --album-gain=n Sets the album gain value to use. Default is to calculate it, if -a is specified. Implies -a in the sense that the album gain tag is written. This is a relative value, in dB, specifying the change in volume that should be applied. -c, --clean Remove any ReplayGain tags from the specified files. If a file does not contain any ReplayGain tags, the file is not modified. -C, --convert Convert old format ReplayGain tags to a new format (see section TAG FORMAT below for details). If a file does not contain all ReplayGain tags that are needed for a conversion, the file is not modified. The album peak tag is only created if -a is specified, and the album gain value is then checked for consistency. Otherwise any album gain is converted without any checks. -d, --display-only Display the result only; do not write anything to disk. This applies to all options. -f, --fast Only calculate the gain for files that do not contain all replay gain tags needed (the album gain and peak tags are only considered if -a has been specified). -n, --no-progress Only display results, but don't show progress in percentages and times. This can be useful if the output is piped into other pro- grams. -p, --preserve-mtime Do not trample upon the timestamps of any files being worked on. This obeys the expected data-vs-metadata behaviour, but can con- fuse some naive archivers. -q, --quiet Do not display any output while processing. Only error and warning messages will be printed. -r, --recursive Enter directories (recursively) and search for files, if directories or file patterns are specified. Note: Only available if vor- bisgain was configured with --enable-recursive. -s, --skip Silently skip any non-Vorbis files found. Vorbis files that can't be processed for some reason are skipped as well, though not silently. Default is to stop when such files are encountered. -v, --version Display the version of the program. EXAMPLES
Simplest version. Calculate the track gain and peak only. vorbisgain somefile.ogg Note that the following examples are only possible if vorbisgain was configured with --enable-recursive. Calculate the album gain and peak, in addition to the track gain and peak, for all .ogg files in the directory "music" (and all subdirecto- ries). All files in one directory are treated as belonging to the same album. Files that already have ReplayGain tags are not re-calcu- lated. Note the quotes, as they cause the shell to not do any filename globbing: vorbisgain -a -f -r music/ Calculate the album gain. The files specified before the directory "album" are treated as one album, the files in the directory "album" as another album and the remaining files as a third album: vorbisgain -a -r a.ogg b.ogg c.ogg album d.ogg e.ogg f.ogg Remove all replaygain tags from a collection of oggs: vorbisgain -c -r music/ TAG FORMAT
vorbisgain creates tags like these (when in -a mode): REPLAYGAIN_TRACK_GAIN=-7.03 dB REPLAYGAIN_TRACK_PEAK=1.21822226 REPLAYGAIN_ALBUM_GAIN=-6.37 dB REPLAYGAIN_ALBUM_PEAK=1.21822226 Gain specifies how much the volume should be changed before playback, in dB. Peak is the maximum sample value of the file before any gain has been applied, where 1.0 means "full sample value" (32,767 when decoding to signed 16 bit samples). Earlier versions of vorbisgain (before 0.30) created the following tags: RG_RADIO RG_PEAK RG_AUDIOPHILE When -c is used, RG_RADIO is converted to REPLAYGAIN_TRACK_GAIN, RG_PEAK to REPLAYGAIN_TRACK_PEAK, RG_AUDIOPHILE to REPLAYGAIN_ALBUM_GAIN and REPLAYGAIN_ALBUM_PEAK is calculated as the maximum of all RG_PEAK tags in the album. AUTHORS
Program Code: Gian-Carlo Pascutto <gcp@sjeng.org> Magnus Holmgren <lear@algonet.se> ReplayGain Analysis Code: Glen Sawyer <glensawyer@hotmail.com> Frank Klemm (http://www.uni-jena.de/~pfk/) Man Page: Magnus Holmgren <lear@algonet.se> BUGS
None known. SEE ALSO
http://sjeng.org/vorbisgain.html Home page for VorbisGain. The latest version, and a Windows executable, can be found here. http://www.replaygain.org/ Contains detailed information about ReplayGain and how it is calculated. http://www.hydrogenaudio.org/ Discussion forum for audio compression and related issues, including Ogg Vorbis and VorbisGain. NOTE
The version of vorbisgain packaged for Debian differs in two ways from the upstream version. First, it does not retain the modification time of the input file by default: if tags are changed in a file, the mtime will change; you can specify "-p" to get the normal behaviour. Second, it does not try to process wildcards in filenames. This makes it impossible to say "process all foo*.ogg in all subdirectories", but also avoids problems with filenames that actually contain wildcards. Without this change, "vorbisgain *.ogg" in a directory with a file that contains a question mark would result in that file being treated as being in a different album. 2004 Jan 3 vorbisgain(1)