Key Performance Indicator (KPI)
May 30, 2025
Key Performance Indicators (KPI) are metrics that are used to measure the performance of a streaming service.
Key Performance Indicators (KPI) are metrics that are used to measure the performance of a streaming service.
ISO base media file format (ISOBMFF) is a standard for storing and exchanging media data.
ID3 is a metadata format that can be used to carry additional information in CMAF and transport streams.
Hypertext Transfer Protocol (HTTP) is an application protocol used for exchanging information over the Internet.
High Efficiency Streaming Protocol (HESP) is an adaptive HTTP-based video streaming protocol with a particular focus on low end-to-end latency and fast channel-change.
Event Message (emsg) boxes are often used to carry proprietary metadata since no standardised methods include a latency timestamp.
Encoder Boundary Point (EBP) is used by the ABR transcoder to signal segment boundaries that are used by the packager downstream to generate the segment files. Standardized by CableLabs [OC-SP-EBP-I01-130118].
Application Programming Interface (API) is a software intermediary that allows two applications to communicate with each other. They can be used to access data and service functionality within applications or databases.
Time to First Byte (TTFB) refers to the time between the browser requesting a resource (i.e., a webpage, a video manifest, a video segment) and when it receives the first byte of information from the server. This time includes DNS lookup and establishing the connection using a TCP handshake and TLS handshake if the request is made
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