==References==* ITU-T H.261 standard== See also ==* H.261* H.263* H.264* List of common resolutions* DVB* DVD* HDTV* VCD* Source Input Format
также ==* Source Input Format (SIF)* H.261* H.263* H.264* DVB* DVD* HDTV* VCD* ITU-T стандарт H.261 [http://www.itu.int/rec/T-REC-H.261-199303-I/en]