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Encoder: Vorbis
A managed wrapper for the Ogg Vorbis Encoder. On Windows, AudioWorks includes libvorbis 1.3.6, with the aoTuV beta6.03 (2018) quality enhancements as well as the Lancer performance patch. On MacOS, this encoder currently uses the official (unpatched) libvorbis 1.3.6. On Linux, the system-installed library is used.
Ogg Vorbis is an open-source lossy codec managed by the Xiph.Org Foundation. It is fairly well supported by players, although hardware support is limited. Comparable to MP3, it is considered technologically inferior to Xiph.Org's own newer Opus codec, which can achieve better quality at lower bit rates. Microsoft Windows 10 support is available via the Web Media Extensions app.
The default settings aim for perceptual transparency. The default quality level (5) differs from the reference encoder (oggenc.exe on Windows), which uses a default quality of 3.
Default: 5 (-1 = lowest quality / smallest files, 10 = highest quality / largest files)
Sets the desired quality level. 5 is generally considered transparent to most listeners, on all but the most problematic samples. Ignored if BitRate is also specified.
Default: none (45 = lowest quality / smallest files, 500 = highest quality / largest files)
Sets a desired bit rate (in kilobits per second) rather than a quality level. By default this still uses an unconstrained variable bit rate. See the Managed option for more detail.
Default: false (Accepted values: true, false)
Enabling this setting instructs the encoder to apply constraints to the bit rate. This tends to both slow down encoding and negatively affect sound quality, but may be necessary in certain specialized cases. Only valid when used in conjunction with BitRate.
Default: none (Accepted values: Track, Album)
Applies ReplayGain adjustments directly to the encoded audio, attenuating or amplifying as necessary. Useful when you want to affect playback on a device that is not directly ReplayGain-compatible. When amplifying, the gain will never be increased beyond digital full scale, to avoid clipping. Ignored if ReplayGain metadata is not present.
Default: random (Accepted values: any 32-bit number)
Ogg files contain a randomly-generated serial number by default. This option allows you to override the serial number with a known value. This is usually only useful for testing purposes.