DragonFly On-Line Manual Pages

opusdec(1)                        opus-tools                        opusdec(1)

NAME
       opusdec - decode audio from Opus format to WAV (or simple audio output)

SYNOPSIS
       opusdec [ -hV ] [ --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 http://icecast.somwhere.org:8000/stream.opus with
       the help of curl on a system with pulseaudio
       (press ctrl-c to quit)
              curl http://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.

SEE ALSO
       opusenc(1), opusinfo(1)

Xiph.Org Foundation               2012-08-31                        opusdec(1)