[Asterisk-video] vdo conf

[Paul Cadach]

Hello Andrew,

Andrey Kouprianov wrote:
> Yes, it's video conferencing. Just like the meetme conferencing. The
> only problem is that everyone says that you have to allow vdo codecs
> in sip.conf first, but, feature page in asterisk.org does not list any
> vdo codec support and guys on forum there kind of discourage usage of
> vdo conferencing uptil now. So I assume that vdo conferencing is not a
> fully blown feature in Asterisk yet.

To perform videoconferencing Asterisk needs to have video-transconding
functionality (i.e. meetme/other sort of conferencing software) should _decode_
video streams coming from conference participants, merge them into signle
"screen" then _encode_ it back with codecs supported by conference parties. In
current state video transcoding functionality isn't supported by Asterisk.

Also, video conferencing have some sort of video-audio synchronization issues
which isn't handled in current Asterisk's design.


Shortly:
1) There is no video codecs;
2) There is no audio-video sychnronization.


WBR,
Paul.