[FFmpeg-trac] #1663(undetermined:new): Multiple named pipes don't work

[FFmpeg]

#1663: Multiple named pipes don't work
-------------------------------------+-------------------------------------
             Reporter:  burek        |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by burek):

 Btw, by "it doesn't work" I mean everything hangs, just like ffmpeg in
 second shell is waiting for something, and it doesn't read both inputs in
 parallel.

 The first ffmpeg shows that it read the input properly and is just about
 to create outputs:
 {{{
 ffmpeg version N-43235-g2db097c Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Aug  5 2012 11:33:55 with gcc 4.6 (Debian 4.6.3-1)
   configuration: --enable-static --enable-shared --enable-gpl --enable-
 nonfree --enable-postproc --enable-libx264 --enable-libaacplus
   libavutil      51. 66.101 / 51. 66.101
   libavcodec     54. 49.100 / 54. 49.100
   libavformat    54. 22.100 / 54. 22.100
   libavdevice    54.  2.100 / 54.  2.100
   libavfilter     3.  5.102 /  3.  5.102
   libswscale      2.  1.101 /  2.  1.101
   libswresample   0. 15.100 /  0. 15.100
   libpostproc    52.  0.100 / 52.  0.100
 [h264 @ 0xb3e640] reference picture missing during reorder
     Last message repeated 3 times
 [h264 @ 0xb3e640] Missing reference picture
 [h264 @ 0xb3e640] decode_slice_header error
 [h264 @ 0xb3e640] concealing 920 DC, 920 AC, 920 MV errors in P frame
 Input #0, flv, from '1.flv':
   Metadata:
     encoder         : Lavf54.9.100
   Duration: 00:15:02.96, start: 0.000000, bitrate: 88 kb/s
     Stream #0:0: Video: h264 (High), yuv420p, 640x360 [SAR 1:1 DAR 16:9],
 16.67 tbr, 1k tbn, 2000k tbc
     Stream #0:1: Audio: aac, 44100 Hz, stereo, s16
 }}}

 The second ffmpeg just hangs after the intro text:
 {{{
 ffmpeg version N-43235-g2db097c Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Aug  5 2012 11:33:55 with gcc 4.6 (Debian 4.6.3-1)
   configuration: --enable-static --enable-shared --enable-gpl --enable-
 nonfree --enable-postproc --enable-libx264 --enable-libaacplus
   libavutil      51. 66.101 / 51. 66.101
   libavcodec     54. 49.100 / 54. 49.100
   libavformat    54. 22.100 / 54. 22.100
   libavdevice    54.  2.100 / 54.  2.100
   libavfilter     3.  5.102 /  3.  5.102
   libswscale      2.  1.101 /  2.  1.101
   libswresample   0. 15.100 /  0. 15.100
   libpostproc    52.  0.100 / 52.  0.100
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1663#comment:2>
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