Videooverføringernes

Videooverføringernes is a Norwegian term used to refer to the systems, processes, and infrastructures involved in delivering moving image signals from a source to one or more receivers. The phrase encompasses both traditional broadcast transmissions and contemporary internet-based delivery, and is often used in technical, historical, or infrastructural contexts to discuss the network of components that carry video content.

Historically, video transmission began with early television technologies that converted scenes into electrical signals and sent them over limited channels. Analog methods relied on broadcast radio frequency bands for terrestrial transmission, with standards such as NTSC, PAL, and SECAM guiding picture format and compatibility. Long-distance distribution used satellite links and coaxial cables, often subject to bandwidth constraints and susceptibility to noise.

Digital video transmission, developed from the late 20th century, replaced many analog systems. International standards and architectures emerged for broadcast and broadband delivery, including DVB, ATSC, ISDB, DVB-T/T2 for terrestrial, DVB-S/S2 for satellite, and DVB-C for cable, as well as fiber networks. On the internet, video is delivered using IP-based protocols (HTTP-based streaming) with codecs such as MPEG-2/4, H.264/AVC, HEVC, and AV1, often via adaptive streaming technologies like HLS and DASH.

In practice, videooverføringernes decisions balance image quality, latency, bandwidth, and reliability. Applications range from live sports and news to on-demand video, video conferencing, and telepresence. Ongoing developments focus on higher resolutions, HDR, low-latency streaming, and integration with mobile networks and 5G.