[FFmpeg-trac] #1235(avformat:new): ffio_limit does not work correctly with named pipes on OSX (Snow Leopard)

[FFmpeg]

#1235: ffio_limit does not work correctly with named pipes on OSX (Snow Leopard)
----------------------------------+--------------------------------------
             Reporter:  ls        |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  git-master
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
----------------------------------+--------------------------------------
 {{{
 $ ffmpeg -f s16le -ac 2 -ar 48000 -i <(ffmpeg -loglevel warning -i camera-
 raw.mp4 -c:a pcm_s16le -f s16le -ac 2 -ar 48000 -) out.wav

 ffmpeg version git-2012-04-19-ab75ad0 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Apr 19 2012 19:20:02 with gcc 4.2.1 (Apple Inc. build 5666)
 (dot 3)
   configuration: --prefix=/homes/lschilli/src/ffmpeg-gar-osx/build
 --enable-shared --disable-static --enable-gpl --enable-nonfree --enable-
 libmp3lame --enable-libx264 --enable-libxvid --enable-sram --cpu=core2
 --enable-hwaccel=h264_vaapi --enable-hwaccel=mpeg2_vaapi --enable-
 hwaccel=mpeg4_vaapi --enable-libfaac --disable-ffserver --enable-
 libfreetype --enable-x11grab
   libavutil      51. 46.100 / 51. 46.100
   libavcodec     54. 14.101 / 54. 14.101
   libavformat    54.  3.100 / 54.  3.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 70.100 /  2. 70.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 11.100 /  0. 11.100
   libpostproc    52.  0.100 / 52.  0.100
 Input #0, s16le, from '/dev/fd/63':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
 Guessed Channel Layout for  Input Stream #0.0 : stereo
 Output #0, wav, to '/tmp/out.wav':
   Metadata:
     encoder         : Lavf54.3.100
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz,
 stereo, s16, 1536 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (pcm_s16le -> pcm_s16le)
 Press [q] to stop, [?] for help
 Truncating packet of size 4096 to 1
 [pcm_s16le @ 0x101853e00] invalid PCM packet
 Error while decoding stream #0:0
 Truncating packet of size 4096 to 1
 [pcm_s16le @ 0x101853e00] invalid PCM packet
 Error while decoding stream #0:0
 Truncating packet of size 4096 to 1
 [pcm_s16le @ 0x101853e00] invalid PCM packet
 Error while decoding stream #0:0
 Truncating packet of size 4096 to 1
 [pcm_s16le @ 0x101853e00] invalid PCM packet
 [...]
 }}}

 Removing `size= ffio_limit(s, size);` from `av_get_packet` in
 `libavformat/utils.c` seems to be a workaround for this problem. On linux
 the same command line results in only one of the error messages above.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1235>
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