[Freeswitch-users] Bug - LUA session:recordFile when using video phones

[Shaun Stokes]

Hi All,

FreeSWITCH version 1.6.19

We are using LUA “session:recordFile” to record greetings which works perfectly on non-video devices, however video phones (such as Polycom VVX500\VVX600, Yealink  T49G etc) are not supported unless video is disabled on the device thus preventing it from attempting to negotiate video in the SDP message. We have H264 enabled  in FS gobal_codec_prefs, disabling H264 also resolves the problem.

From the point we begin the recording there is a 10 second delay before the recording starts on video devices, recording starts after the error “Unable to establish inbound video stream” occurs.
2017-09-28 13:01:39.885386 [NOTICE] switch_core_io.c:1202 Activating write resampler
2017-09-28 13:01:39.985376 [DEBUG] switch_cpp.cpp:895 getDigits dtmf_buf:
2017-09-28 13:01:49.985371 [ERR] switch_ivr_play_say.c:496 Unable to establish inbound video stream
2017-09-28 13:01:49.985371 [DEBUG] switch_ivr_play_say.c:560 Raw Codec Activated, ready to waste resources!
2017-09-28 13:01:49.985371 [DEBUG] switch_ivr_play_say.c:674 Raw Codec Activated

We’ve tried to work around the issue by adding this to our dialplan before the call is answered but the same issue occurs:
<action application="export" data=" absolute_codec_string=PCMA,PCMU"/>
<action application="export" data="codec_string=PCMA,PCMU"/>

Looks like this is a known issue:
https://groups.google.com/forum/#!topic/2600hz-users/61XyiXya5Ik
https://freeswitch.org/jira/si/jira.issueviews:issue-html/FS-9632/FS-9632.html

The JIRA “FS-9632” was marked as resolved but doesn’t appear to apply to LUA when using “session:recordFile”.
https://freeswitch.org/jira/browse/FS-9632

Perhaps we’ve missed something, does anyone have any ideas?

Thanks,
Shaun

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