View source for Information on Video Codecs

X-lite has various video codecs implemented. The implemented codecs of the X-lite 3.0 version are H.263 and H.263+. For example YouTube and Google Video also use this encoding format. The improvement of H.263 has lead to the development of H.263v2 (or H.263+) in 1998 and H.263v3 (or H.263++) in 2000. A significant improvement has lead to the development of H.264 and is also known as MPEG-4 (part 10). This H.264 codec is not available when using X-lite, but is available when using eyebeam 1.5, although some codecs require payment of royalities for their use in a product or program. 

[http://en.wikipedia.org/wiki/H.263 H.263] is a codec designed for videoconferencing using low-bitrate compression. Transfer rates of the H.263 and H.261 are given in the table below.
With [http://trace.eas.asu.edu/tools/H.263.pdf H.263] the contraints on the bit rate are applied externally and are given by the used terminal or the network.


{| border="1" cellspacing="0" 
! Codec
! Compression method
! Transfer rate
|- 
|H.263
|Videocodec (DCT)  
|16-256 Kbps 
|-
|G.261   
|Videocodec (DCT)
|64-256 Kbps 
|-
|}






Whether the H.263 codec uses 16 or 256 Kbps