CounterPath X-Lite 3.0 User Guide - Manual (Page 40)

CounterPath X-Lite 3.0
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Video codecs describe the format by which video streams are compressed for transmission over networks.
Some codecs require less bandwidth than others, but may result in lower video quality.
Users can enable or disable codecs as desired, even if a particular VoIP service provider supports the codec.
With only one codec enabled, all calls made will use that particular compression format. With more than one
codec enabled, X-Lite will choose the best codec to use based on the remote party’s capability, the available
bandwidth, and current network conditions.
Users cannot change the properties of any video codecs.
Options – Advanced – Network