The bitrates in the SDI standards are listed as the maximum bitrate the standard supports and are closely correlated to the video resolutions. Bitrates are most often measured in bits per second (bps), kilobits per second (Kbps), megabits per second (Mbps) or gigabits per second (Gbps). The bitrate describes the rate of bits being transferred from one source to another - it measures how much data is transmitted in a given amount of time. Understanding bitratesīefore digging into the details of the various SDI standards, let’s take a look at one of the most important parameters of the standard: the bitrate (bandwidth). The latest additions to the SDI family of interfaces made their debut in March 2015, where 6G-SDI and 12G-SDI standards were published. Additional versions of the SDI standard have been developed to support continuously increased resolutions (HD, UHD, 4K, 8K), higher bitrates and more colors. SDI and HD-SDI have traditionally only been available in professional video equipment, owing to licensing agreements that restricted use in semi-professional AV equipment, as well as consumer equipment.Īs the world evolves, so has the SDI standard. The SDI standard, however, is not limited to uncompressed content. The standard has been widely adopted by the broadcast industry, and is used for transmission of uncompressed, unencrypted digital video signals in TV studios and facilities. The SDI (Serial Digital Interface) is a family of digital video interfaces (SDI, HD-SDI, 3G-SDI, 6G-SDI and 12G-SDI), that was first standardized in 1989 by SMPTE (The Society of Motion Picture and Television Engineers). What makes SDI special, compared to other standards?.Who manufactures 6G and 12G interfaces?.From its relatively humble beginnings to 8K support, here's what you need to know about SDI and its benefits compared to other interface standards! Serial Digital Interface (SDI) is a professional digital video interface standard that has been used since the early 90s.
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