Opus Parameters

The standard Opus Encoder is supported on all platforms, contrary to the OpusNX version. The parameters are similar, as the inner algorithm is the same. These are described below:

Interface Element	Description
Bitrate/quality	This slider specifies the bitrate in kilo bits per second (kbit/s) for a single Opus channel. The higher the bitrate, the better the sound quality.
Frame Size	The frame length for Opus packets, in ms. Smaller gives lower latency, but worse compression and worse quality. Range is 2.5 to 60 ms. It is not recommended to use 2.5 ms except for very specific cases as it affects the quality a lot.

	Note
The standard Opus codec only supports up to 8 channels. The only channel configurations that will work with Opus are Mono (1.0), LFE (0.1), 1.1, Stereo (2.0), 2.1, 3.0, 3.1, 4.0, 4.1, 5.0, 5.1, 6.1, 7.1, and Dolby 5.1.2. Other configurations will be automatically downmixed or upmixed to the closest channel configuration in this list. See Downmix Tables to learn more about how we downmix and upmix files.

Note

The standard Opus codec only supports up to 8 channels.

The only channel configurations that will work with Opus are Mono (1.0), LFE (0.1), 1.1, Stereo (2.0), 2.1, 3.0, 3.1, 4.0, 4.1, 5.0, 5.1, 6.1, 7.1, and Dolby 5.1.2. Other configurations will be automatically downmixed or upmixed to the closest channel configuration in this list.

See Downmix Tables to learn more about how we downmix and upmix files.

For more general information about the Opus codec please refer to: https://wiki.xiph.org/OpusFAQ.

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Opus Parameters

Opus Parameters

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