[Freeswitch-users] execute_on_answer record_session results in twice recording in different speed

[Dmitriy Shumaev]

 Hi, all.

Next configuration:
"
<extension name="record_3..16_digits" continue="true">
<condition field="${is_already_recording}" expression="^$"/>
<condition field="destination_number" expression="^(\d{3,16})$">
<action application="set" data="RECORD_TITLE=Recording ${caller_id_name} ${caller_id_number} to ${destination_number} at ${strftime(%Y-%m-%d %H:%M)}"/>
<action application="set" data="RECORD_COPYRIGHT=(c) 2013"/>
<action application="set" data="RECORD_SOFTWARE=FreeSwitch"/>
<action application="set" data="RECORD_ARTIST=FreeSwitch"/>
<action application="set" data="RECORD_COMMENT=FreeSwitch"/>
<action application="set" data="RECORD_DATE=${strftime(%Y-%m-%d %H:%M)}"/>
<action application="set" data="RECORD_STEREO=true"/>
<action application="export" data="ignore_early_media=true"/>
<action application="export" data="execute_on_answer=record_session $${base_dir}/recordings/archive/${strftime(%Y-%m-%d-%H-%M-%S)}_${caller_id_name}_${caller_id_number}_2_${destination_number}.wav"/>
<action application="export" data="is_already_recording=true"/>
</condition>
</extension>
"
results in some  an incomprehensible result. C onversation b eing recorded twice in the same file.  The first recording of the conversation played accelerated.  The second recorded conversation played at normal speed.

The replacement of 
<action application="export" data="execute_on_answer=record_session $${base_dir}/recordings/archive/${strftime(%Y-%m-%d-%H-%M-%S)}_${caller_id_name}_${caller_id_number}_2_${destination_number}.wav"/>
to the following solved the problem :
<action application="set" data="media_bug_answer_req=true"/>
<action application="record_session" data="$${base_dir}/recordings/archive/${strftime(%Y-%m-%d-%H-%M-%S)}_${caller_id_name}_${caller_id_number}_2_${destination_number}.wav"/>

Both these examples are from [ http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_record_session ].
So what is the difference between these options?

Thanks for help.


With best regards, Shumaev DA, KBR Ltd.
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