Codec: Difference between revisions

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Latest revision as of 07:38, 17 March 2025

Codec

A codec is a device or software that is used to encode or decode a digital data stream or signal. The term is a portmanteau of "coder-decoder" or, less commonly, "compressor-decompressor". Codecs are used in various applications such as video conferencing, streaming media, and video editing.

Types of Codecs[edit]

Codecs can be broadly categorized into two types:

  • Lossy codecs: These codecs compress data by removing some of the information, which may result in a loss of quality. Examples include MP3, AAC, and H.264.
  • Lossless codecs: These codecs compress data without any loss of quality. Examples include FLAC, ALAC, and H.265.

Audio Codecs[edit]

Audio codecs are used to compress and decompress digital audio data. Some of the most common audio codecs include:

  • MP3: A popular lossy audio codec.
  • AAC: Advanced Audio Coding, a lossy codec that generally offers better sound quality than MP3 at similar bit rates.
  • FLAC: Free Lossless Audio Codec, which compresses audio without any loss of quality.
  • ALAC: Apple Lossless Audio Codec, used primarily in Apple's ecosystem.

Video Codecs[edit]

Video codecs are used to compress and decompress digital video data. Some of the most common video codecs include:

  • H.264: Also known as AVC (Advanced Video Coding), a widely used lossy video codec.
  • H.265: Also known as HEVC (High Efficiency Video Coding), a more efficient successor to H.264.
  • VP9: An open and royalty-free video coding format developed by Google.
  • AV1: A newer open and royalty-free video codec designed to replace VP9.

Applications of Codecs[edit]

Codecs are essential in various fields, including:

See Also[edit]

Related Pages[edit]

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