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Posted: **17 Jan 2014 21:57**

I have compiled the latest git vlc as well as libopus 1.1 and I have been looking for the opus encoder in the gui. It is listed there from the commandline:

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andrew@corinth:~$ cvlc --list | grep opus
VLC media player 2.2.0-git Weatherwax (revision 806a5a5)
  opus                   Opus audio decoder
  opus                   Opus audio encoder

but I cannot see the option in the 'Convert/Save' section of vlc. My apologies for probably missing something very obvious.

Posted: **10 Feb 2014 09:32**

I suspect that I can answer my own question: not all encoders and certainly not all options are available through the gui and Opus encoding is one of these. I put the following commandline together:

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cvlc -vvv --sout \
     "#transcode{acodec=opus,ab=96,channels=2,samplerate=44100}:\
     std{access=file,mux=ogg,dst=test.opus}" \
     luckynight.wav vlc://quit

and this worked well (although I noticed some stuttering at the beginning of the track). Mediainfo reported the resulting file as:

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andrew@corinth:~/Desktop$ mediainfo test.opus 
General
Complete name                            : test.opus
Format                                   : OGG
File size                                : 720 KiB
Duration                                 : 1mn 0s
Overall bit rate                         : 97.6 Kbps
Writing application                      : VLC media player

Audio
ID                                       : 1552885330 (0x5C8F2652)
Format                                   : Opus
Duration                                 : 1mn 0s
Channel count                            : 2 channels
Channel positions                        : Front: L R
Sampling rate                            : 48.0 KHz
Compression mode                         : Lossy
Writing library                          : libopus 1.1

The only puzzle being the failure to convert the sampling rate, possibly I have bumped into a requirement of opus files... I shall research a little further.

Posted: **13 Feb 2014 12:36**

Opus mandates 48kHz

Posted: **25 Feb 2014 08:09**

Thanks for confirming this.

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