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 Under construction Camcorder: A video camera, i.e., a device that records continuous pictures and generates a signal for display or recording. To avoid confusion, it is recommended that the term "camcorder" be used rather than "camera" in contrast, a digital camera records still images, while a digital camcorder records continuous video images. Capture: If the source footage is analog, "capture" refers to the act of digitization (conversion to a digital format) to make the video usable on a computer and, usually, the simultaneous application of compression to reduce the video to a manageable data rate for processing and storage. If the source video is DV, "capture" typically refers to the simple transfer of video from an external device, such as a digital camcorder or tape deck, to a computer hard drive. Capture card: A printed circuit board that fits into an expansion slot on a computer and provides functionality for capturing video from an external source. Chapterization: The process of placing markers into the timeline of a video to demark the beginning points of sequences, or chapters, to which a viewer may "jump", at will, during playback, so long as chapterization is supported by the video architecture in use. True streaming of video supports chapterization; pseudo-streaming, a.k.a. progressive download, does not. Client: In a client/server architecture, the client is a software application that makes requests of the server on behalf of the end-user. A Web browser is a client application; a media player is also a client application. Sometimes the term "client" is also used to refer to a PC or workstation (hardware) on a network being used by an individual to access data and or applications hosted on a server. Clip: A digitized portion of media, typically video or audio. Clipping: Clipping occurs when audio volume reaches or exceeds 0 decibels (db) for 3 consecutive seconds. If you don’t lower the volume so it is within the clipping threshold, data will be lost. Codec: Short for compressor/decompressor comprised of algorithms that handle the compression of video to make it easier to work with and store, as well as the decompression of video for playback. Co-location: An outsource, usually a dedicated facility or facilities, that provides physical space for and/or shared usage of essential computer equipment such as Web servers and, often, mission-critical managed services. Co-locations typically provide a high level of security and protection against fire, theft, vandalism, power outages or irregularities, and other risks which might, potentially, devastate a business that is reliant on 24/7/365 computer operations. Compositing: The process of combining two or more images to yield a resulting, or "composite" image. Compression: Algorithms used by a computer to reduce the total amount of data in a digitized frame or series of frames of video and/or audio. Glossaire (PDF : 168 ko) |
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