[MPlayer-users] Trouble with .gsm files

[andrew]

Hi,

I do not have any trouble playing a gsm encoded wav file but I cannot
play a bare .gsm file:

http://www.nch.com.au/acm/sample.gsm

+-------------------
andrew at skamandros:~/Desktop$ mplayer sample.gsm
MPlayer dev-SVN-r28340-4.3.2 (C) 2000-2009 MPlayer Team
CPU: Intel(R) Core(TM)2 CPU         T5500  @ 1.66GHz (Family: 6,
Model: 15, Stepping: 2)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2

Playing sample.gsm.
libavformat file format detected.
[gsm @ 0x8e855d0]Could not find codec parameters (Audio: 0x0000, 0
channels, s16)
LAVF_header: av_find_stream_info() failed

Exiting... (End of file)
+----------------

ffmpeg identifies this file as follows:

+-----------------
andrew at skamandros:~/Desktop$ ffmpeg -i sample.gsm
FFmpeg version SVN-r16661, Copyright (c) 2000-2009 Fabrice Bellard, et
al.
  configuration: --disable-debug --enable-shared --disable-static 
--enable-postproc --enable-avfilter --enable-pthreads
--enable-libtheora 
--enable-libvorbis --enable-swscale --enable-x11grab
--enable-libmp3lame 
--enable-libxvid --enable-libx264 --enable-libschroedinger
--enable-libfaac 
--enable-libamr-wb --enable-libamr-nb --enable-libspeex
--enable-libgsm 
--enable-nonfree --enable-gpl
  libavutil     49.13. 0 / 49.13. 0
  libavcodec    52.11. 0 / 52.11. 0
  libavformat   52.24. 1 / 52.24. 1
  libavdevice   52. 1. 0 / 52. 1. 0
  libavfilter    0. 2. 0 /  0. 2. 0
  libswscale     0. 6. 1 /  0. 6. 1
  libpostproc   51. 2. 0 / 51. 2. 0
  built on Jan 18 2009 09:23:01, gcc: 4.3.2
Input #0, gsm, from 'sample.gsm':
  Duration: N/A, bitrate: N/A
    Stream #0.0: Audio: libgsm, 8000 Hz, mono, s16
At least one output file must be specified
+-----------------

Can somebody have a look and see if it is in fact playable?

Thanks for your trouble,

Andrew

-- 
Do you think that's air you're breathing?