"H.261." YourDictionary, n.d. Web. 15 May 2018. <http://www.yourdictionary.com/h-261>.
H.261. (n.d.). Retrieved May 15th, 2018, from http://www.yourdictionary.com/h-261
An ITU standard for compressing an H.320 video transmission. The algorithm can be implemented in hardware or software and uses intraframe and interframe compression. It uses one or more 64 Kbps ISDN channels (Px64). H.261 supports CIF and QCIF resolutions. See H.323, CIF and codec.