[Libav-user] Could not find codec parameters

[Emanuel Berg]

This command

    avconv -i concat:file_1.mp3\|...\|file_n.mp3 -c copy out.mp3

says

    avconv version 11.2-6:11.2-1, Copyright (c) 2000-2014 the Libav developers
      built on Jan 17 2015 21:51:46 with gcc 4.9.2 (Debian 4.9.2-9)
    [mp3 @ 0x1f254c0] Format detected only with low score of 25, misdetection possible!
    [mp3 @ 0x1f254c0] Could not find codec parameters (Audio: mp3, 0 channels, s16p)
    [mp3 @ 0x1f254c0] Estimating duration from bitrate, this may be inaccurate
    concat:2-brothers-on-the-4th-floor-fly.mp3|2-brothers-on-the-4th-floor-living-in-cyberspace.mp3|age-pee-hymn.mp3|alice-dj-everything-begins-with-an-e.mp3|all.mp3|antares-ride-on-a-meteorite.mp3|b-g-the-prince-of-rap-the-colors-of-my-dreams.mp3|blumchen-heut-ist-mein-tag.mp3|blumchen-ich-bin-wieder-hier.mp3|captain-hollywoood-love-and-pain.mp3|e-rotic-max-dont-have-sex-with-your-ex-extended.mp3|e-rotic-sex-on-the-phone-extended.mp3|e-rotic-willy-use-a-billy-boy-extended.mp3|fun-factory-take-your-chance.mp3|out.mp3|rapture-music-is-my-life-stateside-edit.mp3: could not find codec parameters

or that error message in a file

    http://user.it.uu.se/~embe8573/error

I'm on Debian

    Linux debian 3.17.1 #9 SMP Fri Nov 7 23:05:01 CET 2014 x86_64 GNU/Linux

with

    avconv version 11.2-6:11.2-1, Copyright (c) 2000-2014 the Libav developers
      built on Jan 17 2015 21:51:46 with gcc 4.9.2 (Debian 4.9.2-9)
    avconv 11.2-6:11.2-1
    libavutil     54.  3. 0 / 54.  3. 0
    libavcodec    56.  1. 0 / 56.  1. 0
    libavformat   56.  1. 0 / 56.  1. 0
    libavdevice   55.  0. 0 / 55.  0. 0
    libavfilter    5.  0. 0 /  5.  0. 0
    libavresample  2.  1. 0 /  2.  1. 0
    libswscale     3.  0. 0 /  3.  0. 0

-- 
underground experts united
http://user.it.uu.se/~embe8573