[FFmpeg-trac] #3217(avformat:open): ac3 muxer does not force single stream (was: Audio filter produce broken output when used with '-map')

[FFmpeg]

#3217: ac3 muxer does not force single stream
------------------------------------+------------------------------------
             Reporter:  Selur       |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  ac3         |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
------------------------------------+------------------------------------
Changes (by cehoyos):

 * keywords:   => ac3
 * status:  new => open
 * component:  FFmpeg => avformat
 * reproduced:  0 => 1


Comment:

 Patch sent.
 {{{
 $ ffmpeg -f s16le -i /dev/zero -map 0:0 -map 0:0 -t 1 out.ac3
 ffmpeg version N-58970-g7f39352 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Dec 11 2013 09:41:48 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      52. 58.100 / 52. 58.100
   libavcodec     55. 46.100 / 55. 46.100
   libavformat    55. 22.101 / 55. 22.101
   libavdevice    55.  5.102 / 55.  5.102
   libavfilter     3. 92.100 /  3. 92.100
   libswscale      2.  5.101 /  2.  5.101
   libswresample   0. 17.104 /  0. 17.104
   libpostproc    52.  3.100 / 52.  3.100
 Guessed Channel Layout for  Input Stream #0.0 : mono
 Input #0, s16le, from '/dev/zero':
   Duration: N/A, bitrate: 705 kb/s
     Stream #0:0: Audio: pcm_s16le, 44100 Hz, mono, s16, 705 kb/s
 Output #0, ac3, to 'out.ac3':
   Metadata:
     encoder         : Lavf55.22.101
     Stream #0:0: Audio: ac3, 44100 Hz, mono, fltp, 96 kb/s
     Stream #0:1: Audio: ac3, 44100 Hz, mono, fltp, 96 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (pcm_s16le -> ac3)
   Stream #0:0 -> #0:1 (pcm_s16le -> ac3)
 Press [q] to stop, [?] for help
 size=      24kB time=00:00:01.00 bitrate= 193.1kbits/s
 video:0kB audio:24kB subtitle:0 global headers:0kB muxing overhead
 0.000000%
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/3217#comment:1>
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