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diff --git a/trunk/doc/video.txt b/trunk/doc/video.txt new file mode 100644 index 000000000..d7bd282f9 --- /dev/null +++ b/trunk/doc/video.txt @@ -0,0 +1,46 @@ +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 (over trunks too) +Local Forwards video calls as a proxy channel +Agent 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 more than welcome! |