Hello, Yes, of course I've tried. It does not work at all. 2015-06-09 17:17:33.577729 [INFO] avformat.c:1483 use video codec: [28] h264 (H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10) 2015-06-09 17:17:33.577729 [ERR] avformat.c:384 Could not open audio codec: Experimental feature 2015-06-09 17:17:33.577729 [NOTICE] switch_ivr_play_say.c:544 Hangup sofia/internal/1004@62.168.61.75 [CS_EXECUTE] [DESTINATION_OUT_OF_ORDER] 2015-06-09 17:17:33.577729 [ERR] switch_rtp.c:3057 video DTLS packet not written -- S pozdravem, Ing.Denis Jakovlev mob.tel. 775-415-382 úterý 9. června 2015, 17:00:58, napsal jste: try mod_av On Tuesday, June 9, 2015, Denis Jakovlev <yadenis@seznam.cz> wrote: Hi all, I have a question on the use of mod_vlc. I use it to record video in MP4 format. The video is excellent. But the sound goes with a bang. In log i have warning. 3c83a32b-cae4-4662-a930-5f360c48e500 2015-06-09 15:13:29.274847 [WARNING] switch_core_media.c:3184 NO candidate ACL defined, Defaulting to wan.auto And I think that in this case. Can I somehow fix this? I use FreeSWITCH Version 1.7.0+git~20150609T042756Z~18063a4754~64bit (git 18063a4 2015-06-09 04:27:56Z 64bit) on Debian. -- S pozdravem, Ing.Denis Jakovlev mob.tel. 775-415-382