A codec (short for coder-decoder or compressor-decompressor) is a device or software that encodes and decodes digital data, typically for audio, video, or multimedia applications.
Explanation:
1. Encoding (Compression): Converts raw data (e.g., video or audio) into a compressed format to save storage and bandwidth.
2. Decoding (Decompression): Converts the compressed data back into its original or a playable form.
Examples of Codecs:
Audio Codecs: MP3, AAC, FLAC
Video Codecs: H.264, H.265 (HEVC), VP9
Thus, the correct answer is (A) Coder-decoder because a codec performs both encoding and decoding functions.
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