[gstreamer-bugs] [Bug 566661] Totem can't play .gsm files

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | don't know | Ver: 0.10.x




------- Comment #10 from Wim Taymans  2009-01-07 17:41 UTC -------
sorry, I don't get it:

 wim at wtay:~$ dpkg-query -S /usr/bin/aplay
 alsa-utils: /usr/bin/aplay
 wim at wtay:~$ 

my aplay is from alsa-utils, what does that have to do with sox? 

Also:

 wim at wtay:~$ aplay /home/wim/data/msg0001.gsm 
 Playing raw data '/home/wim/data/msg0001.gsm' : Unsigned 8 bit, Rate 8000 Hz,
Mono
 wim at wtay:~$ 

which results in noisy output.

sox however comes with play, which does:

 wim at wtay:~$ play /home/wim/data/msg0001.gsm 

 Input File     : '/home/wim/data/msg0001.gsm'
 Sample Size    : 8-bit (1 byte)
 Sample Encoding: GSM
 Channels       : 1
 Sample Rate    : 8000

 Time: 00:07.44 [00:00.00] of 00:00.00 (0.00%) Samples out: 357k  Clips: 0    
 Done.

Nicely sounding GSM decoded and all.

Then when I rename the file, removing the .gsm extension:

 wim at wtay:~$ play /home/wim/data/msg0001
 play soxio: Can't open input file `/home/wim/data/msg0001': unknown file type
 wim at wtay:~$ 

As expected because you can't guess the type of a raw GSM file.

So it seems that is is simply using the .gsm extension to determine the codec. 


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