ITU’s technical TV standards.

Since it released its first technical standards for television in 1949, the International Telecommunications Union (ITU) has consistently developed globally harmonized standards that have progressively enhanced television viewing experience, addressing both visual and audio quality.


From early colour TV standards to developing parameters for 4:3 and widescreen 16:9 aspect ratio television, ITU has championed the switch to digital TV broadcasting, high definition and ultra-high-definition television (UHDTV). These transitions enabled more services, and improved picture and sound quality

These efforts include seminal achievements like the last Emmy Award-winning ITU-R BT.2100 Recommendation for high-dynamic range (HDR)-TV, setting global benchmarks for high-quality viewing experiences.

ITU has been crucial in developing services that improve the accessibility of audio-visual content, which has led to a massive increase in the availability of subtitles, audio description, and multiple languages.

Location: Palais des Nations, Av. de la Paix 8-14, 1211 Genève, Switzerland

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