opusdec (1)
Leading comments
Process this file with groff -man -Tascii opusdec.1
NAME
opusdec - decode audio from Opus format to WAV (or simple audio output)SYNOPSIS
opusdec [ -hV ] [ --quiet ] [ --rate Hz ] [ --gain dB ] [ --no-dither ] [ --float ] [ --force-wav ] [ --packet-loss pct ] [ --save-range file ] input.opus [ output.wav ]DESCRIPTION
opusdec decodes Opus files into PCM Wave (uncompressed) files.
If the input file is specified as - , then opusdec will read from stdin. Likewise, an output filename of - will cause output to be to stdout.
If no output is specified opusdec will attempt to play the audio in realtime if it supports audio playback on your system.
OPTIONS
- -h, --help
- Print help message
- -V, --version
- Display version information
- --quiet
- Suppresses program output
- --rate
-
Force decoding at sampling rate n Hz - --gain
-
Adjust the output volume n dB, negative values make the signal quieter. - --no-dither
- Do not dither 16-bit output
- --float
- 32-bit floating-point files instead of 16-bit files
- --force-wav
- Force including a wav header on output (e.g. for non-wav extensions and stdout)
- --packet-loss
- Simulate n % random Opus packet loss
- --save-range
-
Saves check values for every frame to a file
EXAMPLES
Decode a file input.opus to output.wav- opusdec input.opus output.wav
Play a file input.opus and force output at 48000 regardless of the original sampling rate
(48kHz output may be faster, due to avoiding resampling and some sound hardware produces higher quality output when run at 48kHz)
- opusdec --rate 48000 input.opus
Re-encode a high bitrate Opus file to a lower rate
- opusdec --force-wav input.opus - | opusenc --bitrate 64 - output.opus
Play an http stream icecast.somwhere.org:8000/stream.opus with the help of curl on a system with pulseaudio
(press ctrl-c to quit)
- curl icecast.somwhere.org:8000/stream.opus | padsp opusdec -
AUTHORS
Jean-Marc Valin <jmvalin@jmvalin.ca>
Gregory Maxwell <greg@xiph.org>
BUGS
Opusdec does not currently reject all invalid files which it should reject. It also doesn't provide very helpful output for the corrupted files it does reject. Use opusinfo(1) for somewhat better diagnostics.