[FFmpeg-trac] #3181(undetermined:new): default to opus codec for *.opus output files

[FFmpeg]

#3181: default to opus codec for *.opus output files
-------------------------------------+-------------------------------------
             Reporter:  LinAGKar     |                     Type:
               Status:  new          |  enhancement
            Component:               |                 Priority:  normal
  undetermined                       |                  Version:
             Keywords:               |  unspecified
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------
 Summary of the bug:
 Presumably since .opus files uses he ogg container they will default to
 flac audio, however .opus files are expected to contain opus streams.

 How to reproduce:
 {{{
 % ffmpeg -i input output.opus
 }}}
 example:
 {{{
 > ffmpeg -i C418\ -\ Minecraft\ -\ Volume\ Alpha\ -\ 01\ Key.flac -vn
 C418\ -\ Minecraft\ -\ Volume\ Alpha\ -\ 01\ Key.opus
 ffmpeg version 2.1.1 Copyright (c) 2000-2013 the FFmpeg developers
   built on Nov 20 2013 20:26:43 with gcc 4.7 (SUSE Linux)
   configuration: --shlibdir=/usr/lib64 --prefix=/usr
 --mandir=/usr/share/man --libdir=/usr/lib64 --enable-shared --disable-
 static --enable-debug --disable-stripping --extra-cflags='-fmessage-
 length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables
 -fasynchronous-unwind-tables -g -fPIC -I/usr/include/gsm' --enable-gpl
 --enable-x11grab --enable-version3 --enable-pthreads --enable-avfilter
 --enable-libpulse --enable-libvpx --enable-libopus --enable-libass
 --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-
 libspeex --enable-libxvid --enable-libx264 --enable-libschroedinger
 --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb
 --enable-postproc --enable-libdc1394 --enable-librtmp --enable-libfreetype
 --enable-avresample --enable-libtwolame --enable-libvo-aacenc --enable-
 gnutls
   libavutil      52. 48.101 / 52. 48.101
   libavcodec     55. 39.101 / 55. 39.101
   libavformat    55. 19.104 / 55. 19.104
   libavdevice    55.  5.100 / 55.  5.100
   libavfilter     3. 90.100 /  3. 90.100
   libavresample   1.  1.  0 /  1.  1.  0
   libswscale      2.  5.101 /  2.  5.101
   libswresample   0. 17.104 /  0. 17.104
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, flac, from 'C418 - Minecraft - Volume Alpha - 01 Key.flac':
   Metadata:
     TITLE           : Key
     ARTIST          : C418
     DATE            : 2011
     ALBUM           : Minecraft - Volume Alpha
     track           : 1
   Duration: 00:01:05.00, bitrate: 311 kb/s
     Stream #0:0: Audio: flac, 44100 Hz, stereo, s16
     Stream #0:1: Video: png, rgb24, 700x700 [SAR 53520:53520 DAR 1:1], 90k
 tbr, 90k tbn, 90k tbc
     Metadata:
       comment         : Cover (front)
 File 'C418 - Minecraft - Volume Alpha - 01 Key.opus' already exists.
 Overwrite ? [y/N] y
 Output #0, ogg, to 'C418 - Minecraft - Volume Alpha - 01 Key.opus':
   Metadata:
     TITLE           : Key
     ARTIST          : C418
     DATE            : 2011
     ALBUM           : Minecraft - Volume Alpha
     track           : 1
     encoder         : Lavf55.19.104
     Stream #0:0: Audio: flac, 44100 Hz, stereo, s16, 128 kb/s
     Metadata:
       TITLE           : Key
       ARTIST          : C418
       DATE            : 2011
       ALBUM           : Minecraft - Volume Alpha
       TRACKNUMBER     : 1
       encoder         : Lavf55.19.104
 Stream mapping:
   Stream #0:0 -> #0:0 (flac -> flac)
 Press [q] to stop, [?] for help
 size=    2038kB time=00:01:05.09 bitrate= 256.5kbits/s
 video:0kB audio:2028kB subtitle:0 global headers:0kB muxing overhead
 0.499630%
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3181>
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