From 3be9c811f1340c5a8e1d3e2f2bde3914cb8ca3e7 Mon Sep 17 00:00:00 2001 From: Olle Johansson <oej@edvina.net> Date: Fri, 19 May 2006 09:28:05 +0000 Subject: [PATCH] Adding some documentation on Asterisk and video telephony. Thanks to the team on the asterisk-video mailing list for teaching me :-) git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@28555 65c4cc65-6c06-0410-ace0-fbb531ad65f3 --- doc/video.txt | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 doc/video.txt diff --git a/doc/video.txt b/doc/video.txt new file mode 100644 index 0000000000..455ded62d9 --- /dev/null +++ b/doc/video.txt @@ -0,0 +1,45 @@ +Asterisk and Video telephony +---------------------------- + +Asterisk supports video telephony in the core infrastructure. Internally, it's one audio stream +and one video stream in the same call. Some channel drivers and applications has video support, +but not all. + +Codecs and formats +------------------ +Asterisk supports the following video codecs and file formats. There's no video +transcoding so you have to make sure that both ends support the same video format. + + Codec Format + ----- ---------- + H.263 read/write + H.264 read/write + H.261 - Passthrough only + +Note that the file produced by Asterisk video format drivers is in no generic +video format. Gstreamer has support for producing these files and converting from +various video files to Asterisk video+audio files. + +Note that H.264 is not enabled by default. You need to add that in the channel +configuration file. + +Channel drivers +--------------- +SIP The SIP channel driver (chan_sip.so) has support for video +IAX2 Supports video calls +Local Forwards video calls as a proxy channel + +Applications +------------ +This is not yet a complete list. These dialplan applications are known to handle video: + +voicemail Video voicemail storage (does not attach video to e-mail) +record Records audio and video files (give audio format as argument) +playback Plays a video while being instructed to play audio +echo Echos audio and video back to the user + +There is a development group working on enhancing video support for Asterisk. +If you want to participate, join the asterisk-video mailing list on http://lists.digium.com + +--- +Updates to this file are welcome! -- GitLab