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<p><b>New page</b></p><div>[[file:Macosx_audiovideo_corevideo_20091030.png|thumb|left]] '''Core Video''' is a [[framework]] in [[macOS]] and [[iOS]] that provides services for processing video and [[media]]. It is part of the [[Core Media]] framework and is used in conjunction with other frameworks such as [[Core Animation]], [[Core Image]], and [[Core Audio]] to handle complex video processing tasks.<br />
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==Overview==<br />
Core Video is designed to handle the manipulation and display of video content. It provides a pipeline for managing the flow of video frames from a source to a destination, which can be a display or a file. The framework is optimized for performance and leverages the hardware capabilities of Apple devices to ensure smooth video playback and processing.<br />
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==Key Components==<br />
Core Video consists of several key components:<br />
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* '''CVImageBufferRef''': A type that represents a video frame. It is a [[buffer]] that holds image data.<br />
* '''CVPixelBufferRef''': A subtype of CVImageBufferRef that specifically holds pixel data. It is used for raw image data that can be processed or displayed.<br />
* '''CVOpenGLBufferRef''': A buffer that is used in conjunction with [[OpenGL]] to render video frames.<br />
* '''CVDisplayLinkRef''': A timer-based mechanism that synchronizes the display of video frames with the refresh rate of a display.<br />
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==Functionality==<br />
Core Video provides several important functionalities:<br />
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* '''Buffer Management''': Core Video manages the allocation and deallocation of video buffers, ensuring efficient use of memory and resources.<br />
* '''Synchronization''': The framework synchronizes video playback with the display's refresh rate, reducing [[tearing]] and ensuring smooth playback.<br />
* '''Conversion''': Core Video can convert video frames between different formats and color spaces, making it easier to work with various types of video content.<br />
* '''Integration''': Core Video integrates seamlessly with other media frameworks like [[AVFoundation]] and [[Core Media]], allowing developers to build complex media applications.<br />
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==Applications==<br />
Core Video is used in a variety of applications, including:<br />
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* [[Video editing]] software<br />
* [[Media players]]<br />
* [[Streaming]] applications<br />
* [[Augmented reality]] and [[virtual reality]] applications<br />
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==See Also==<br />
* [[Core Animation]]<br />
* [[Core Image]]<br />
* [[Core Audio]]<br />
* [[AVFoundation]]<br />
* [[Core Media]]<br />
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==References==<br />
{{Reflist}}<br />
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==External Links==<br />
{{Commons category|Core Video}}<br />
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[[Category:MacOS]]<br />
[[Category:IOS]]<br />
[[Category:Application programming interfaces]]<br />
[[Category:Multimedia frameworks]]<br />
[[Category:Apple Inc. software]]<br />
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