NAME

       qmp3info - show info from mp3 files

SYNOPSIS

       qmp3info [option]... file...

DESCRIPTION

       qmp3info  reads a list of mp3 files and prints on standard output some of its parameters: version, layer,
       sample rate, bit rate, duration and tag. a duration summary is appended at the end of the list.

OPTIONS

       -c, --check
              check the entire stream (slower but accurate). all the frames of the stream are read and the total
              duration  is  exactly computed. this option is automatically activated if the stream appears to be
              vbr (have different bit rate frames).

       -h, --help
              show a brief help and exit.

       -s, --summary-only
              show only the summary. do not show info from every file.

       -v, --verbose
              show also the number of bytes and frames.

       -V, --version
              show version and exit.

BUGS

       variable bit rate (vbr) streams are detected by reading the initial (5) frames in the  stream.  if  their
       bit rate field differs, the --check option is activated automatically.

       if  vbr  is  not  detected, qmp3info reads only the first frame in the stream and calculates the duration
       supposing that (1) the entire stream is composed by valid frames and (2) all the frames have the same bit
       rate.  this is a fast way to compute the duration of the stream, but it is not exact: there's an error of
       0.3% aprox. if you want to be accurate, or qmp3info is unable to detect a vbr stream, use --check.

       tests have been done only with mpeg version 1 layer iii streams, though it may (or not) work  with  other
       versions or layers.

AUTHOR

       dmanye@etse.urv.es
       http://www.etse.urv.es/~dmanye/quelcom/quelcom.html

SEE ALSO

       qmp3join(1), qmp3cut(1), qmp3check(1), qmp3report(1)
       qwavinfo(1), qwavjoin(1), qwavcut(1), qwavsilence(1), qwavfade(1), qwavheaderdump(1)