D14636.13 Profile C60-C40 and Codec C60-C40 Administrator Guide TC7.0, DECEMBER 2013.
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Cisco TelePresence System Codec C40/C60 and Profiles using C40/60
Administrator Guide
Optimal definition profiles
Under ideal lighting conditions the bandwidth (call rate)
requirements can be substantially reduced.
The optimal definition profile should reflect the lighting
conditions in your room and the quality of the video input
(camera); the better the lighting conditions and video input,
the higher the profile. Then, in good lighting conditions, the
video encoder will provide better quality (higher resolution or
frame rate) for a given call rate.
In general, we recommend the optimal definition profile
set to Normal. However, if lighting conditions are good we
recommend that you test the endpoint on the various Optimal
Definition Profile settings before deciding on a profile.
Go to System Configuration on the web interface and
navigate to
Video > Input > Source [1..n] > OptimalDefinition >
Profile
to choose the preferred optimal definition profile.
You can set a resolution threshold to determine when to allow
sending video at 60 fps. For all resolutions lower than this
threshold, the maximum transmitted frame rate will be 30 fps;
for higher resolutions, 60 fps will be possible if the available
bandwidth is adequate.
Go to System Configuration on the web interface and
navigate to
Video > Input > Source [1..n] > OptimalDefinition >
Threshold60fps
to set the threshold.
The video input quality settings must be set to Motion for the
optimal definition settings to take any effect. With the video
input quality set to Sharpness, the endpoint will transmit the
highest resolution possible, regardless of frame rate.
Go to System Configuration on the web interface and
navigate to
Video > Input > Source [1..n] > Quality
to set the
video quality parameter to Motion.
You can read more about the video settings in the
chapter.
High
Typically used in dedicated video
conferencing rooms. Requires very good
lighting conditions and a good quality
video input to achieve a good overall
experience.
Under ideal conditions the bandwidth
requirements can be reduced by up to
50% compared to Normal.
Medium
Typically used in rooms with good and
stable lighting conditions and a good
quality video input.
The bandwidth requirements can be
reduced by up to 25% compared to
Normal.
Normal
This setting is typically used in office
environments where the room is normally
to poorly lit.
Typical resolutions used for different optimal definition profiles, call rates and frame rates
Frame
rate
Optimal
Definition
Profile
Call rate
256 kbps
768 kbps 1152 kbps 1472 kbps 2560 kbps
4 Mbps
6 Mbps
30 fps
Normal
512 × 288
1024 × 576 1280 × 720 1280 × 720 1920 × 1080 1920 × 1080 1920 × 1080
Medium
640 × 360
1280 × 720 1280 × 720 1280 × 720 1920 × 1080 1920 × 1080 1920 × 1080
High
768 × 448
1280 × 720 1280 × 720 1920 × 1080 1920 × 1080 1920 × 1080 1920 × 1080
60 fps
Normal
256 × 144
512 × 288
768 × 448
1024 × 576 1280 × 720 1280 × 720 1280 × 720
*
Medium
256 × 144
768 × 448
1024 × 576 1024 × 576 1280 × 720 1280 × 720
*
1280 × 720
*
High
512 × 288
1024 × 576 1280 × 720 1280 × 720 1280 × 720
*
1280 × 720
*
1280 × 720
*
*
The resolution will be 1920 × 1080 for 1080p60 capable C60 codecs (main board rev F and later).
Contents
Introduction
Web interface
System settings
Setting passwords
Appendices
Appendices
