[FFmpeg-trac] #43(avformat:open): JACK input device doesn't link on OS X

[FFmpeg]

#43: JACK input device doesn't link on OS X
-------------------------------------+-------------------------------------
             Reporter:  nieder       |                    Owner:
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  jack osx     |               Blocked By:
  roundup                            |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * status:  reopened => open
 * reproduced:  0 => 1


Comment:

 The patch can still be used but the resulting executable does not work
 here:
 {{{
 $ ffmpeg -f jack -i ffmpeg -y out.wav
 ffmpeg version N-58952-gf8d8d2e Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Dec 10 2013 15:22:26 with Apple LLVM version 5.0
 (clang-500.2.79) (based on LLVM 3.3svn)
   configuration:
   libavutil      52. 58.100 / 52. 58.100
   libavcodec     55. 45.100 / 55. 45.100
   libavformat    55. 22.100 / 55. 22.100
   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
 [jack @ 0x7fa5db820200] JACK client registered and activated
 (rate=44100Hz, buffer_size=512 frames)
 [jack @ 0x7fa5db820200] Input error: timed out when waiting for JACK
 process callback output
 Guessed Channel Layout for  Input Stream #0.0 : stereo
 Input #0, jack, from 'ffmpeg':
   Duration: N/A, bitrate: 2822 kb/s
     Stream #0:0: Audio: pcm_f32le, 44100 Hz, stereo, flt, 2822 kb/s
 Output #0, wav, to 'out.wav':
   Metadata:
     ISFT            : Lavf55.22.100
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (pcm_f32le -> pcm_s16le)
 Press [q] to stop, [?] for help
 [jack @ 0x7fa5db820200] Input error: timed out when waiting for JACK
 process callback output
 ffmpeg: Input/output error
 size=       0kB time=00:00:00.00 bitrate=N/A
 video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead inf%
 Output file is empty, nothing was encoded (check -ss / -t / -frames
 parameters if used)
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/43#comment:6>
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