peppermint@peppermint ~ $ opusenc foo.wav foo.opus
Encoding using libopus 1.1-beta (audio)
-----------------------------------------------------
   Input: 44.1kHz 2 channels
  Output: 2 channels (2 coupled)
          20ms packets, 96kbit/sec VBR
 Preskip: 356

[\] 00:00:26.89 8.97x realtime,  96.1kbit/s                                     Encoding complete                                    
-----------------------------------------------------
       Encoded: 30.14 seconds
       Runtime: 3 seconds
                (10.05x realtime)
         Wrote: 366825 bytes, 1507 packets, 33 pages
       Bitrate: 96.4366kbit/s (without overhead)
 Instant rates: 72.4kbit/s to 183.2kbit/s
                (181 to 458 bytes per packet)
      Overhead: 0.954% (container+metadata)

peppermint@peppermint ~ $ opusinfo foo.opus
Processing file "foo.opus"...

New logical stream (#1, serial: 1ce589be): type opus
Encoded with libopus 1.1-beta
User comments section follows...
	ENCODER=opusenc from opus-tools 0.1.7
Opus stream 1:
	Pre-skip: 356
	Playback gain: 0 dB
	Channels: 2
	Original sample rate: 44100Hz
	Packet duration:   20.0ms (max),   20.0ms (avg),   20.0ms (min)
	Page duration:   1000.0ms (max),  972.3ms (avg),  140.0ms (min)
	Total data length: 366825 bytes (overhead: 0.954%)
	Playback length: 0m:30.116s
	Average bitrate: 97.44 kb/s, w/o overhead: 96.51 kb/s
Logical stream 1 ended
peppermint@peppermint ~ $