opusenc

encodes audio to Opus format

TLDR

Encode to Opus

$ opusenc [input.wav] [output.opus]

Set bitrate

$ opusenc --bitrate [128] [input.wav] [output.opus]

Set quality

$ opusenc --vbr --comp [10] [input.wav] [output.opus]

Add metadata

$ opusenc --title "[title]" --artist "[artist]" [input.wav] [output.opus]

Encode from pipe

$ ffmpeg -i [input] -f wav - | opusenc - [output.opus]

SYNOPSIS

opusenc [options] input output

opusenc encodes raw or container audio (WAV, AIFF, FLAC, or raw PCM) to the Opus codec inside an Ogg container. Opus is a low-latency, royalty-free codec well suited to both music and speech at bitrates from 6 to 510 kbit/s.By default opusenc uses VBR at complexity 10, which gives the best quality for the size at the cost of CPU time. Reading from `-` lets you pipe from `ffmpeg`, `sox`, or similar tools.

PARAMETERS

INPUT

Input audio file.

OUTPUT

Output Opus file.

--bitrate KBPS

Target bitrate in kbit/s. Default is 64 for mono, 96 for stereo.

--vbr

Use variable bitrate (default).

--cvbr

Use constrained variable bitrate.

--hard-cbr

Use hard constant bitrate.

--comp LEVEL

Encoding complexity, 0 (fast) to 10 (slowest, best quality). Default 10.

--framesize MS

Frame size in ms (2.5, 5, 10, 20, 40, 60). Default 20.

--music / --speech

Tune the encoder for music or for speech.

--downmix-mono / --downmix-stereo

Force mono or stereo output.

--title TITLE, --artist NAME, --album NAME

Set Vorbis-style metadata tags.

--raw, --raw-rate HZ, --raw-chan N

Treat input as headerless PCM with the given sample rate and channel count.

--help

Display help information.

CAVEATS

Shipped as part of opus-tools. Input must be WAV, AIFF, FLAC, or raw PCM; MP3 and other lossy formats should be decoded first (typically via ffmpeg). Opus is lossy: re-encoding from another lossy source compounds artifacts.

HISTORY

opusenc was created for encoding audio to the Opus codec format.