Cisco Cisco TelePresence MCU 4510 Maintenance Manual
Big Panes vs. Small Panes
This layout can be seen as the most traditional video-conferencing view. Each participant is displayed in the same
sized pane as the other participants. If there are more than four participants, the four most significant (the four
loudest) are displayed, with one pane each.
sized pane as the other participants. If there are more than four participants, the four most significant (the four
loudest) are displayed, with one pane each.
By contrast, these example layouts have some larger panes, and the participants shown in those panes are seen as
more significant than the other contributors. When allocating participants to panes, the MCU always fills the largest
panes first. If there are more participants than panes then there will never be empty big panes and non-empty small
panes.
more significant than the other contributors. When allocating participants to panes, the MCU always fills the largest
panes first. If there are more participants than panes then there will never be empty big panes and non-empty small
panes.
To reduce the number of view changes when different participants speak (for example, when people change from
being active speakers to inactive contributors), the MCU duplicates participant views for layouts with more than four
small panes. For the three example layouts shown above, the participant(s) shown in the large pane(s) of the first two
layouts will be duplicated in the surrounding small panes. However, the four small panes of the third layout will show
different participants to those displayed in the three big panes. This reduces the impact of audio volume changes on
the composed layout while not needlessly wasting view space. However, it is possible to configure the MCU not to
duplicate participant views in this way if so desired (see
being active speakers to inactive contributors), the MCU duplicates participant views for layouts with more than four
small panes. For the three example layouts shown above, the participant(s) shown in the large pane(s) of the first two
layouts will be duplicated in the surrounding small panes. However, the four small panes of the third layout will show
different participants to those displayed in the three big panes. This reduces the impact of audio volume changes on
the composed layout while not needlessly wasting view space. However, it is possible to configure the MCU not to
duplicate participant views in this way if so desired (see
).
Participants Viewing Themselves
When considering which participants to show in which panes, a participant's self view has the lowest priority. This
has two main implications:
has two main implications:
■
Participant pane selection
When choosing participants to display, the MCU considers the viewer last. This prevents the participant who
is the active speaker from seeing only themselves. In this case, while everyone else will see the active
speaker, the active speaker will see the previous active speaker in their biggest view pane.
When choosing participants to display, the MCU considers the viewer last. This prevents the participant who
is the active speaker from seeing only themselves. In this case, while everyone else will see the active
speaker, the active speaker will see the previous active speaker in their biggest view pane.
■
View family layout selection
When the MCU is required to choose a layout from a view family, it does so based on the number of video
contributors to the conference. However, when calculating the number of video contributors for a particular
view, the MCU does not consider any video stream being received from the viewer.
When the MCU is required to choose a layout from a view family, it does so based on the number of video
contributors to the conference. However, when calculating the number of video contributors for a particular
view, the MCU does not consider any video stream being received from the viewer.
Thus, with five participants in a conference and everyone seeing the standard equal-sized view family (2x2,
3x3 or 4x4), each of the five contributing participants will always see the 2x2 view with themselves excluded.
However, streaming viewers will see the conference display using the 3x3 view with five panes in use.
3x3 or 4x4), each of the five contributing participants will always see the 2x2 view with themselves excluded.
However, streaming viewers will see the conference display using the 3x3 view with five panes in use.
You may configure the MCU never to show participants their own video stream in small panes (see
). If this is the case, then participants viewing layouts with some panes larger than others will
never see their own video stream in any of the small panes, even if there are free slots. They may still appear in large
panes, for example if the view focus is manually changed to show their video.
panes, for example if the view focus is manually changed to show their video.
Changing View Focus
Using the tilt (up and down) far-end camera controls on a connected video endpoint causes the view to change,
cycling through the available families and then the conference-wide or per-participant custom layouts (if enabled).
cycling through the available families and then the conference-wide or per-participant custom layouts (if enabled).
In addition, the pan (left and right) far-end camera controls on a connected video endpoint can be used to focus the
view on a particular participant, as opposed to the MCU allocating participants to panes based solely on the volume
of the audio being received from them.
view on a particular participant, as opposed to the MCU allocating participants to panes based solely on the volume
of the audio being received from them.
To reduce the disruption of the view when cycling through conference participants, there is a short delay after
selecting a new focused participant before the rest of the view layout reverts to the "correct" arrangement of
participants in panes.
selecting a new focused participant before the rest of the view layout reverts to the "correct" arrangement of
participants in panes.
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