qmp3info(1)							 quelcom man pages						       qmp3info(1)

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)

quelcom 0.4.0							   february 2001						       qmp3info(1)