Well, if you have soxi installed (Linux, of course) then you could always use a system call to grab the file length. For kicks I whipped up a proof of concept dial plan to demonstrate how it could work. If anyone finds it useful please let me know and I'll wikify it.
-MC

  <extension name="soxi sound file length">
    <condition field="destination_number" expression="^(9904)$">
      <action application="answer"/>
      <action application="sleep" data="500"/>
      <action application="set"
              data="sound_file=${sounds_dir}/music/8000/danza-espanola-op-37-h-142-xii-arabesca.wav"/>
      <action application="set"
              data="file_length=${system soxi -D ${sound_file} | tr -d '\\n' }"/>
      <action application="log" data="INFO Sound file length is '${file_length}'"/>
      <action application="set" data="file_length=${expr(ceil(${file_length}))}"/>
      <action application="log" data="INFO Sound file length is '${file_length}'"/>
      <action application="say" data="en number pronounced ${file_length}"/>
      <action application="playback" data="time/seconds.wav"/>
    </condition>
  </extension>

On Mon, Jul 23, 2012 at 9:09 AM, Alexandre Fiori <fiorix@gmail.com> wrote:

that's the problem, I don't know the length, but playback does :)

thanks anyway

On 2012-07-23, at 11:53 AM, Michael Collins <msc@freeswitch.org> wrote:

If you know the length of the file then you could use sched_api to schedule something. For example, if you know that your file is 12 seconds long you could do something like this:

sched_api +9 none uuid_broadcast <uuid> <app>::<args> bleg

Check out both of these on the wiki - there's a lot that these can do.
-MC

http://wiki.freeswitch.org/wiki/Mod_commands#uuid_broadcast
http://wiki.freeswitch.org/wiki/Mod_commands#sched_api
_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@freeswitch.org
http://www.freeswitchsolutions.com

FreeSWITCH-powered IP PBX: The CudaTel Communication Server
http://www.cudatel.com

Official FreeSWITCH Sites
http://www.freeswitch.org
http://wiki.freeswitch.org
http://www.cluecon.com

Join Us At ClueCon - Aug 7-9, 2012

FreeSWITCH-users mailing list
FreeSWITCH-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org

- af

_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@freeswitch.org
http://www.freeswitchsolutions.com

FreeSWITCH-powered IP PBX: The CudaTel Communication Server
http://www.cudatel.com

Official FreeSWITCH Sites
http://www.freeswitch.org
http://wiki.freeswitch.org
http://www.cluecon.com

Join Us At ClueCon - Aug 7-9, 2012

FreeSWITCH-users mailing list
FreeSWITCH-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org

--
Michael S Collins
Twitter: @mercutioviz
http://www.FreeSWITCH.org
http://www.ClueCon.com
http://www.OSTAG.org


_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@freeswitch.org
http://www.freeswitchsolutions.com

FreeSWITCH-powered IP PBX: The CudaTel Communication Server
http://www.cudatel.com

Official FreeSWITCH Sites
http://www.freeswitch.org
http://wiki.freeswitch.org
http://www.cluecon.com

Join Us At ClueCon - Aug 7-9, 2012

FreeSWITCH-users mailing list
FreeSWITCH-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org