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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 exten‐
	      sions 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  -  out‐
	      put.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	 opus‐
	      dec -


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)

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