Yealink SIP-T2 SERIES Administrator's Manual page 841

The SIP VP-T49G IP phones support transmission and reception of high quality video
images. The video is compatible with
RFC 4629 - RTP Payload Format for ITU-T Rec. H.263 Video.
This section provides information for making configuration changes for the following
video-related features:
Video Settings

Video Codecs

The SIP VP-T49G IP phones support USB camera for point-to-point video calls. Users can
place and answer video calls. The IP phones support transmission and reception of high
quality video images. To optimize video calling, you can configure camera settings as
required, such as white balance, exposure compensation and sharpness.
You need to know the following basic glossaries when configuring camera settings:
Glossary
People's eyes are very good at judging what is white under
different light sources, but the camera often have great
difficulty with auto white balance - and can create unsightly
White Balance
blue, orange, or even green color casts. Adjusting white
balance can help you remove unrealistic color casts and then
improve the images under a wider range of lighting conditions.
Describes the clarity of detail in a video image. The picture will
Sharpness be sharp and clear, but moderate to heavy motion at low call
rates can cause some frames to be dropped.
Contrast is the difference in luminance or color that makes an
Contrast object (or its representation in an image or display)
distinguishable.
Describes how bright-colored of the video image. It is also
Saturation
known as the purity of colour.
Image noise is interference in the video signal that shows up as
grainy specks. Reduces the image noise can make the video
Noise
image clearer.
Reduction
A 2D filter reduces the noise that can be found in low light
images. This type of filter is sometimes confused by motion,
RFC 3984 - RTP Payload Format for H.264 Video,
Description
Configuring Video Features
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