A video codec is a device or software that enables video compression or decompression or both. There are various kinds of video codecs available. Several companies have implemented these codecs by different algorithms, therefore, the codecs have different specifications and applications in various fields. These video codecs generally comply with Industry standards.

Avaya uses the following signaling and content codecs in video:

• Video codecs for transmitting content:

  • H.261: Known as MPEG-1. This codec is the first to support video over ISDN.

  • H.263: This is a well-known video-conferencing codec that is optimized for low data rates and low motion.

  • H.264: This codec supports high definition video and is used by Blu-Ray players, YouTube, iTunes, and Adobe Flash. You can use this codec for high definition video conferencing.

• Video codecs for multimedia signaling:

  • H.224: This codec is well-supported by Microsoft and is primarily used by soft clients, such as Avaya one-X® Communicator, that support video signaling.

  • H.224.1 (data, far-end camera control): This signaling codec is used by video conferencing companies like PolyCom and LifeSize.

Various video codecs are technically differentiated from each other based on several factors such as compression technology, compression algorithm, supported platform, sampling, and supported OS.