MP3 files are made up of many (usally several thousand) audio blocks called If you want to guarantee anĪccurate count of the number of good frames when using %u by itself, you should use Specifier, you force mp3info to do a full scan of the file which guarantees anĪccurate count of both the good and bad frames. This is because when you use %u by itself, mp3info only estimates the number ofįrames based on the bitrate and the size of the file. Sometimes gives a different number of good frames than when used with the %b Several users have noted that the %u specifier used alone: Also note that aįORMAT_SPECIFIER containing %b or a VBR MP3 file will automatically trigger a full Under other conditions will only slow down mp3info. Mp3info's output if the -x switch is used or the -p switch is used with aįORMAT_SPECIFIER containing %m, %s, %S, %u or (rarely) %r. One should specify the -F switch if one wants mp3info to read the entire MP3 file Wish to ensure that she is getting exact information. Often the estimates agree exactly with the full scans. Off by no more than a second, and the number of frames is off by less than 0.1%. Usually, this results in very accurate estimates. Things up by reading a handful of frames from various points in the file andĮstimating the statistics for the rest of the file based on those samples. Would be necessary to read the entire MP3 file. Number of bad frames, and in a few cases the bit rate) with absolute certainty, it In order to determine certain technical attributes (playing time, number of frames, Multiple word fields must be enclosed in quotes (eg: -t "A title") Genres can be specified as numbers or names: -g 17 same as -g Rock Non-specified ID3 fields, if existant, will remain unchanged. Specifying a track number of 0 reverts an ID3 tag to 1.0 format Specifying MP3 files without any other options displays the existing ID3 tag (if any). \x hh Any arbitrary character specified by the hexidecimal number hh \ ooo Any arbitrary character specified by the octal number ooo \\ A single backslash character %s Playing time: seconds only (usually used in conjunction with %r Bit Rate in kbps (type and meaning affected by -r option) See the EXAMPLES section below for examples of how format strings are used inĬonversion Specifiers %f Filename without the path The various alignment, precision, and field width modifiers accepted by printf(3). Any conversion specifier may optionally include Printf(3) format string in that it is printed verbatim except for the followingĬonversions and escape sequences. Print MP3 attributes according to FORMAT_STRING. F Do a Full scan for technical information (see the section Speed Considerations f Force Mode: Treat all files as MP3s even if MP3 frames can't be found i Edit ID3 tag interactively (uses curses/ncurses functions) V - Simply use the word 'Variable' (this is the default). Section below entitled Bit Rates for more information):Ī - Average bit rate (Note: this option also causes the bit rates of non-VBRįiles to be displayed as floating point values). Report bit rate of Variable Bit Rate (VBR) files as one of the following (See the x Display technical attributes of the MP3 file G Display a list of valid genres and their associated numeric codes. Specify ID3 genre (use -G option for a list of valid genres). ItĬan also (optionally) display various technical attributes of the MP3 file. DESCRIPTION mp3info is a utility used to read and modify the ID3 tags in MPEG layer 3 (MP3) files. Mp3info - MP3 technical info viewer and ID3 tag editor
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