Thanks for the quick reply.
I'm new to this project so I'm not familiar with the inner workings just yet but at looking at mod_native_file.c it seems this is a thin wrapper around the switch's own file input and output routines? Would it be best to change this class or register a new file type, like .ul? If so, where would be a good starting point.
----- Original Message -----
From: "Anthony Minessale" <anthony.minessale@gmail.com>
To: freeswitch-users@lists.freeswitch.org
Sent: Wednesday, January 21, 2009 10:56:45 AM GMT -07:00 US/Canada Mountain
Subject: Re: [Freeswitch-users] Recording ULAW files
no, there is currently no way to do that.
It would be feasible to add an option to mod_native_file to write wav headers around the raw data but it has not been attempted.
On Wed, Jan 21, 2009 at 10:48 AM,
<freeswitch-users@digitaldan.com> wrote:
Hi, I'm recording files using the pcmu extension in order to save them in the g.711 ulaw format, which is what everything in my network uses. It appears that the recorded file is just raw data without a header. Is there any way to save this as a wav type with a header (keeping the ulaw format)?
for example, running the unix command 'file' on the recording prints:
/tmp/185065_f7bb8e0c-e641-11dd-800d-5ffe41c540dd.PCMU: data
if I run it through sox which just outputs the same data (ulaw,8000,mono) but specifying the type as wav
/usr/bin/sox -t .ul -r 8000 -c 1 -b -U file.pcmu -t wav -r 8000 -c 1 -b -U file.wav
it produces a file that shows:
/tmp/185065_f7bb8e0c-e641-11dd-800d-5ffe41c540dd.wav: RIFF (little-endian) data, WAVE audio, ITU G.711 mu-law, mono 8000 Hz
if I try and save it within freeswitch using the wav extension, it trans-codes it to a pcm format
RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, mono 8000 Hz
Is there any way to have freeswitch record the file as ulaw with the RIFF wav header?
Thanks!
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