opus 7.1

C:\Apps\opus>opusenc.exe shaft.flac shaft.opus
Encoding using libopus 1.3 (audio)
-----------------------------------------------------
   Input: 48 kHz, 8 channels
  Output: 8 channels (6 coupled, 2 uncoupled)
          20ms packets, 416 kbit/s VBR
 Preskip: 312

Encoding complete
-----------------------------------------------------
       Encoded: 1 hour, 51 minutes, and 30.16 seconds
       Runtime: 6 minutes and 21 seconds
                (17.56x realtime)
         Wrote: 257597058 bytes, 334508 packets, 6693 pages
       Bitrate: 306.404 kbit/s (without overhead)
 Instant rates: 19.2 to 818.8 kbit/s
                (48 to 2047 bytes per packet)
      Overhead: 0.528% (container+metadata)


C:\Apps\opus>opusenc.exe --bitrate 512 shaft.flac shaft512.opus
Encoding using libopus 1.3 (audio)
-----------------------------------------------------
   Input: 48 kHz, 8 channels
  Output: 8 channels (6 coupled, 2 uncoupled)
          20ms packets, 512 kbit/s VBR
 Preskip: 312

Encoding complete
-----------------------------------------------------
       Encoded: 1 hour, 51 minutes, and 30.16 seconds
       Runtime: 6 minutes and 34 seconds
                (16.98x realtime)
         Wrote: 311795899 bytes, 334508 packets, 6726 pages
       Bitrate: 370.97 kbit/s (without overhead)
 Instant rates: 19.2 to 1007.2 kbit/s
                (48 to 2518 bytes per packet)
      Overhead: 0.502% (container+metadata)


C:\Apps\opus>opusenc.exe --bitrate 640 shaft.flac shaft640.opus
Encoding using libopus 1.3 (audio)
-----------------------------------------------------
   Input: 48 kHz, 8 channels
  Output: 8 channels (6 coupled, 2 uncoupled)
          20ms packets, 640 kbit/s VBR
 Preskip: 312

Encoding complete
-----------------------------------------------------
       Encoded: 1 hour, 51 minutes, and 30.16 seconds
       Runtime: 6 minutes and 50 seconds
                (16.32x realtime)
         Wrote: 389483051 bytes, 334508 packets, 7162 pages
       Bitrate: 463.487 kbit/s (without overhead)
 Instant rates: 19.2 to 1234.4 kbit/s
                (48 to 3086 bytes per packet)
      Overhead: 0.483% (container+metadata)