[FFmpeg-user] standard err or out?

[Albretch Mueller]

~
 are there assumptions or any explicit guidelines regarding where do
ffmpeg/ffprobe report to?
~
 what is reported on standard err also includes:
~
  built on Dec 19 2011 06:57:29 with gcc 4.6.1
  configuration: --prefix=/media/sdc1/inst/sw/ffmpeg
~
 which is included when it is run on a file.
~
$ ffprobe -version
ffprobe version N-35872-g6d8e6fe, Copyright (c) 2007-2011 the FFmpeg developers
  built on Dec 19 2011 06:57:29 with gcc 4.6.1
  configuration: --prefix=/media/sdc1/inst/sw/ffmpeg
  libavutil    51. 32. 0 / 51. 32. 0
  libavcodec   53. 46. 0 / 53. 46. 0
  libavformat  53. 26. 0 / 53. 26. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 53. 0 /  2. 53. 0
  libswscale    2.  1. 0 /  2.  1. 0
ffprobe N-35872-g6d8e6fe
libavutil    51. 32. 0 / 51. 32. 0
libavcodec   53. 46. 0 / 53. 46. 0
libavformat  53. 26. 0 / 53. 26. 0
libavdevice  53.  4. 0 / 53.  4. 0
libavfilter   2. 53. 0 /  2. 53. 0
libswscale    2.  1. 0 /  2.  1. 0

$ ffprobe /media/sdc1/tmp/eslpod/eslpod02/ESLPod100.mp3
ffprobe version N-35872-g6d8e6fe, Copyright (c) 2007-2011 the FFmpeg developers
  built on Dec 19 2011 06:57:29 with gcc 4.6.1
  configuration: --prefix=/media/sdc1/inst/sw/ffmpeg
  libavutil    51. 32. 0 / 51. 32. 0
  libavcodec   53. 46. 0 / 53. 46. 0
  libavformat  53. 26. 0 / 53. 26. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 53. 0 /  2. 53. 0
  libswscale    2.  1. 0 /  2.  1. 0
[mp3 @ 0x8e16b80] max_analyze_duration 5000000 reached at 5015510
[mp3 @ 0x8e16b80] Estimating duration from bitrate, this may be inaccurate
Input #0, mp3, from '/media/sdc1/tmp/eslpod/eslpod02/ESLPod100.mp3':
  Metadata:
    title           : ESLPod100
    genre           : Podcast
    TBP             : 120
    encoded_by      : iTunes v6.0.1
    artist          : Center for Educational Development
    TCM             : Center for Educational Development
    album           : English as a Second Language Podcast
    date            : 2005
  Duration: 00:13:35.03, start: 0.000000, bitrate: 64 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, mono, s16, 64 kb/s
~
 since I am coding based on those streams I would like to have some
idea of the logic behind it
~
 lbrtchx