Bookmarks
Concepts
Activity
Courses
Concept
Data compression is the process of reducing the size of a data file or stream to save storage space or transmission time while maintaining the essential information. It involves encoding information using fewer bits than the original representation, often leveraging patterns and redundancies in the data.
Concept
Concept
Audio compression reduces the file size of digital audio data by removing redundant or less audible information, enabling more efficient storage and transmission. It can be either lossy, where some audio quality is sacrificed for greater compression, or lossless, preserving the original quality while achieving moderate compression levels.
Concept
Concept
MPEG-2 is a standard for the coding of moving pictures and associated audio information, widely used for digital television and DVD video. It provides efficient compression algorithms that balance quality and file size, making it suitable for broadcast-quality video and audio transmission.
Concept
Concept
ISO/IEC standards are internationally recognized guidelines and specifications that ensure the quality, safety, efficiency, and interoperability of products, services, and systems. They are developed through a consensus-based process involving technical experts and stakeholders from around the world, facilitating global trade and innovation.
Concept
Concept
A codec is a device or software that encodes or decodes digital data streams or signals, primarily used in media files for compressing and deCompressing audio and video. It plays a crucial role in reducing file sizes for storage and transmission while maintaining quality, facilitating efficient streaming and playback across various platforms.
Concept
Bit rate refers to the number of bits that are conveyed or processed per unit of time, often expressed in bits per second (bps). It is a critical factor in determining the quality and efficiency of data transmission in digital communications and multimedia applications.
Concept
Video encoding is the process of converting raw video data into a digital format that can be efficiently stored and transmitted. It involves compression algorithms that reduce file size while maintaining quality, enabling streaming and playback on various devices and platforms.
Concept
A video codec is a software or hardware tool that compresses and deCompresses digital video to reduce file size while maintaining quality. It enables efficient storage and transmission of video data by balancing compression efficiency and computational complexity.
Concept
A macroblock is a processing unit used in video compression formats, such as MPEG and H.264, to divide a video frame into blocks for efficient encoding. It typically consists of a 16x16 pixel block of luminance samples and associated chrominance samples, allowing for effective compression by exploiting spatial and temporal redundancies within the video data.
The Discrete Cosine Transform (DCT) is a mathematical technique used to convert a signal or image from the spatial domain to the frequency domain, which helps in reducing the amount of data needed to represent the signal. It is widely used in image and video compression, such as JPEG and MPEG, due to its ability to concentrate most of the signal's energy in a small number of coefficients, making it highly efficient for compression purposes.
3