Which ITU standard was the first digital video compression standard?

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Multiple Choice

Which ITU standard was the first digital video compression standard?

H.261 is the first digital video compression standard from ITU-T, introduced to enable practical videotelephony by providing a formal method to encode and transmit video at modest bitrates. It established the fundamental approach used in later codecs: block-based transform coding with motion estimation and compensation, creating a standardized way to compress video for real-time communication. It also defined basic formats and resolutions that became a baseline for early video conferencing. The other options came later or serve different roles: H.263 was an improved codec optimized for even lower bitrates, H.320 is a broader ISDN-based videoconferencing standard that relies on H.261 as a foundation, and HIPAA is a healthcare privacy regulation unrelated to video coding.

H.261 is the first digital video compression standard from ITU-T, introduced to enable practical videotelephony by providing a formal method to encode and transmit video at modest bitrates. It established the fundamental approach used in later codecs: block-based transform coding with motion estimation and compensation, creating a standardized way to compress video for real-time communication. It also defined basic formats and resolutions that became a baseline for early video conferencing. The other options came later or serve different roles: H.263 was an improved codec optimized for even lower bitrates, H.320 is a broader ISDN-based videoconferencing standard that relies on H.261 as a foundation, and HIPAA is a healthcare privacy regulation unrelated to video coding.

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