opusinfo --VERSION (return code: 0)
opusinfo: invalid option -- '-'
opusinfo from opus-tools 0.1.10
opusinfo --help (return code: 0)
opusinfo: invalid option -- '-'
opusinfo from opus-tools 0.1.10
by the Xiph.Org Foundation (http://www.xiph.org/)
(c) 2003-2005 Michael Smith <msmith@xiph.org>
(c) 2012 Gregory Maxwell <greg@xiph.org>
Opusinfo is a fork of ogginfo from the vorbis-tools package
which has been cut down to only support opus files.
Usage: opusinfo [flags] file1.opus [file2.opus ... fileN.opus]
Flags supported:
-h Show this help message.
-q Make less verbose. Once will remove detailed informative
messages, twice will remove warnings.
-v Make more verbose. This may enable more detailed checks
for some stream types.
-V Output version information and exit.