- A codec is a device or computer program used for encoding or decoding the digital data stream or signal.
- A codec encodes a data stream for transmission and storage in encrypted format, and the decoder function reverses the encoding for playback or editing.
- Compression codecs are classified into two types 1.Lossy codecs.
- Lossless codecs are often used for archiving data in a compressed form, lossless codecs are preferable than lossy codecs.
- Lossy codecs will degrade the quality of resulting data if encoding and decoding happens.
- Using more than one codec or encoding scheme can also degrade quality.
- Many popular codecs are lossy. They reduce quality in order to maximize compression. often, this type of compression is virtually indistinguishable from the original uncompressed image or sound.
- Image compression in codec design is to represent and store the image in a YCbCr color space.
2.Lossless codecs.
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