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vbrfix(1) [debian man page]

VBRFIX(1)							   User Commands							 VBRFIX(1)

NAME
vbrfix - fix erroneous VBR MP3 files SYNOPSIS
vbrfix -flag1 -flag2 -flagn in.mp3 out.mp3 DESCRIPTION
In an average song there are points that require high quality and points that require low quality (i.e., silence). Instead of having the whole file at 160kbps (CBR - Constant Bit Rate), we can use VBR - Variable Bit rate. This allows us to have say 96Kbps at points not requiring high quality and 192kbps when we need it: resulting in an overall smaller but higher quality MP3. However, the problem is that many MP3 programs estimate the time of a MP3 based on the first bitrate they find and the filesize. With VBR you can get fairly random times; as most songs start with silence you usually get the song length being shown as much longer than it should be. Also when you jump through the file in VBR: 50% through the file is not 50% through the song. A VBR null frame is placed at the beginning of the file to tell the MP3 player information about the song length and indexing through the song. Some poor encoders don't produce this null frame or do so incorrectly - this is what vbrfix attempts to fix. Vbrfix can also fix other problems with MP3s as it deletes all non-MP3 content (other than tags you state you want to keep). It can also help when merging two VBR MP3s together with a merging tool and then needing a newly calculated VBR null frame. -ri1 removeId3v1 Tag -ri2 removeId3v2 Tag -skiplame if a tag was made by LAME don't fix it -always always write a new file even if not VBR -makevbr make it VBR (you need -always also) -log write a log file -lameinfo keep the lame info SEE ALSO
lame (1) VBRFIX Command Line Version May 2010 VBRFIX(1)

Check Out this Related Man Page

NcdT(1) 						      General Commands Manual							   NcdT(1)

NAME
ncdt - directory tree printer with extended capabilities SYNOPSIS
ncdt [-db?] [--dirs] [--bitrate] [--prefix text ] [--help] [ directory [ name ]] DESCRIPTION
ncdt is a small utility for printing directory trees. It has some additional features not found in tree(1). Additional capabilities are: - size field for directories displays the summary size of directory subtree instead of the size of the special file (which is somewhat more useful) - sizes are displayed in a more readable format (that's a minor improvement, but it helps a little) - MP3 files are detected; additional info is displayed for them (which is probably the nicest thing about NcdT) The info is displayed in a compact form, like <2:53 v168JR+> where 2:53 is play time, v (if present) means the file is encoded using VBR, 168 is bitrate (average bitrate for VBR files), J describes channel encoding (Mono, Stereo, Joint-Stereo, Dual channel), R (if present) means the file has a RIFF header at the beginning, + (if present) means the file has ID3v2 tag attached - (if present) means there's no ID3 tag at all (none of these means there's only ID3v1 tag present). NcdT is particularily nice for indexing CDs. OPTIONS
-d --dirs Print only directories, omit files. This mode is a rough equivalent of du(1). -b --bitrate Print bitrate info for directories. Bitrates are displayed both for ordinary files and directories. If all MP3 files in a given directory subtree have the same bitrate only one number is printed, if they have various bitrates the range is printed. --prefix text Prefix listing with given text. This option is not intended for general use. It might be used by programs using NcdT to index CDsor doing similar operations to record additional information. -? --help Display usage summary. USAGE
When called without any parameters ncdt displays directory tree for current directory (.). When called with one parameter ncdt displays directory tree for specified directory. When called with two parameters ncdt displays directory tree for the directory specified as its first parameter. Second parameter is used as directory label for the top level directory (instead of directory name from parameter 1). EXAMPLES
ncdt prints directory tree for the current directory. It will be labeled . ncdt /usr prints directory tree of /usr. It will be labeled /usr ncdt /cdrom 'CD #21' prints directory tree of /cdrom. It will be labeled CD #21 ncdt -db /cdrom lists directory sizes, play times and bitrate ranges SEE ALSO
tree(1), du(1) BUGS
NcdT uses quite a lot of memory. It's also not very fast, but on a decent CPU it should not be noticeable. There are no real bugs I'm aware of. I don't think there are any now. AUTHOR
Pawel Wiecek <coven@vmh.net> NcdT(1)
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