CounterPath X-Lite 4 for Windows User Guide - Manual (Page 49)

X-Lite 4 for Windows User Guide
45
Preferences – Video Codecs
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.
You can enable or disable codecs as desired. You may decide to disable a codec even though your VoIP service
provider supports it.
With only one codec enabled, all calls made will use that particular compression format. With more than one
codec enabled, X-Lite automatically chooses the best codec based on the other party’s capability, the available
bandwidth, and network conditions.
You cannot change the properties of any codecs.
Supported Codecs
Codec Royalty-bearing Included in X-Lite
H.263 3
H.263+ 1998 3