[Freeswitch-dev] Audio formats without transcoding

[Juan Jose Comellas]

BTW, what are you planning to use to convert WAV files to G.722?


On Fri, Jan 2, 2009 at 9:38 AM, Mikael A. Bjerkeland
<mikael at bjerkeland.com>wrote:

> Michael,
>
> let's say G722 isn't found, but .wav is, will FS revert to using
> the .wav file and transcode if the file extension is not specified in
> playback?
>
> I will be creating a script to convert any file using sox to every
> specified format so we can avoid transcoding as much as possible.
> The script will appear at
> http://wiki.freeswitch.org/wiki/Mod_native_file anytime soon.
>
>
> El mar, 09-12-2008 a las 08:34 -0800, Michael Collins escribió:
> > Unfortunately mod_native_file hasn't been documented on the wiki yet.
> > I'm going to work on that. However, the gist of it is this: if you
> > have a file in the proper format, such as g711, then you can specify
> > the file name w/o the extension and FreeSWITCH will pick the right one
> > for the codec being used. You'll need to make sure that your file
> > names have the proper extensions, like .pcmu for mu-law. A complete
> > list is available here:
> > http://www.iana.org/assignments/media-types/audio/
> >
> > so if you have these files:
> > /tmp/hello.wav
> > /tmp/hello.pcmu
> > /tmp/hello.gsm
> > /tmp/hello.g729
> >
> > you can specify the exact file name, in which case FS will play the
> > file and do whatever transcoding is needed. Or you can specify the
> > filename without the extension and FS will pick the appropriate one:
> >
> > <action application="playback" data="/tmp/hello"/>
> >
> > Look for an update on the wiki in the next day or two. In the meantime
> > please report back if you have any issues.
> >
> > -MC
> >
> > On Tue, Dec 9, 2008 at 7:24 AM, Michael Jerris <mike at jerris.com> wrote:
> > > yes, you can use mod_native_file.
> > >
> > > Mike
> > >
> > > On Dec 9, 2008, at 9:10 AM, Juan Jose Comellas wrote:
> > >
> > >> I need to support calls using G.711, G.729 and G.722 and I want to
> > >> avoid transcoding as much as possible. Does FreeSWITCH support playing
> > >> audios in a raw format that does not require transcoding for any of
> > >> these codecs? It looks like FS provides WAV audio files with the
> > >> frequencies of the supported codecs and relies on transcoding all the
> > >> time. Is my analysis correct? How does everybody else handle this
> > >> problem?
> > >
> > >
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