Cisco TelePresence SX20 Quick Set

Administrator guide

Table of contents

Introduction

Web interface

Advanced settings

Appendices

 

61

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Video Input Source [1..2] OptimalDefinition Profile

The Video Input Source Quality setting must be set to Motion for the optimal definition settings to take any effect.

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.

Generally, we recommend using the Normal or Medium profiles. However, when the lighting conditions are good, the High profile can be set in order to increase the resolution for a given call rate.

Some typical resolutions used for different optimal definition profiles, call rates and transmit frame rates are shown in the table below. It is assumed that dual video is not used. The resolution must be supported by both the calling and called systems.

Use the Video Input Source OptimalDefinition Threshold60fps setting to decide when to use the 60 fps frame rate.

Typical resolutions used for different optimal definition profiles, call rates and frame rates

Frame

Optimal

 

 

 

Call rate

 

 

 

Definition

 

 

 

 

 

 

rate

Profile

256 kbps

768 kbps

1152 kbps

1472 kbps

2560 kbps

4 Mbps

6 Mbps

 

 

Normal

512×288

1024×576

1280×720

1280×720

1920×1080

1920×1080

1920×1080

30 fps

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

 

Normal

256×144

512×288

768×448

1024×576

1280×720

1280×720

1920×1080

60 fps

Medium

256×144

768×448

1024×576

1024×576

1280×720

1920×1080

1920×1080

 

High

512×288

1024×576

1280×720

1280×720

1920×1080

1920×1080

1920×1080

 

 

 

 

 

 

 

 

 

Requires user role: ADMIN

Value space: <Normal/Medium/High>

Normal: Use this profile for a normally to poorly lit environment. Resolutions will be set rather conservative.

Medium: Requires good and stable lighting conditions and a good quality video input. For some call rates this leads to higher resolution.

High: Requires nearly optimal video conferencing lighting conditions and a good quality video input in order to achieve a good overall experience. Rather high resolutions will be used.

Example: Video Input Source 1 OptimalDefinition Profile: Medium

Video Input Source [1..2] OptimalDefinition Threshold60fps

For each video input, this setting tells the system the lowest resolution where it should transmit 60fps. So for all resolutions lower than this, the maximum transmitted framerate would be 30fps, while above this resolution 60fps would also be possible, if the available bandwidth is adequate.

Requires user role: ADMIN

Value space: <512_288/768_448/1024_576/1280_720/Never> 512_288: Set the threshold to 512x288.

768_448: Set the threshold to 768x448.

1024_576: Set the threshold to 1024x576.

1280_720: Set the threshold to 1280x720.

Never: Do not set a threshold for transmitting 60fps.

Example: Video Input Source 1 OptimalDefinition Threshold60fps: 1280_720

Video Input Source [1..2] Quality

When encoding and transmitting video there will be a trade-off between high resolution and high framerate. For some video sources it is more important to transmit high framerate than high resolution and vice versa. The Quality setting specifies whether to give priority to high frame rate or to high resolution for a given source.

Requires user role: ADMIN

Value space: <Motion/Sharpness>

Motion: Gives the highest possible framerate. Used when there is a need for higher frame rates, typically when a large number of participants are present or when there is a lot of motion in the picture.

Sharpness: Gives the highest possible resolution. Used when you want the highest quality of detailed images and graphics.

Example: Video Input Source 1 Quality: Motion

Video DefaultPresentationSource

Define which video input source shall be used as the default presentation source (when you press the Presentation key on the remote control). The input source is configured to a video input connector.

Requires user role: USER

Value space: <1/2>

Range: Select the video source to be used as the presentation source.

Example: Video DefaultPresentationSource: 2

D14908.01 SX20 Administrator Guide (TC5.1) 2012 FEBRUARY © 2012 Cisco Systems, Inc. All rights reserved.

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