MULTIMEDIA AND QUALITY OF SERVICE
MULTIMEDIA DATA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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lossless compression schemes
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lossy compression schemes
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lost compression schemes
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loss compression schemes
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Detailed explanation-1: -MPEG uses a lossy form of compression, which means that some data is lost when the audio or video is compressed.
Detailed explanation-2: -There are codecs for data (PKZIP), still images (JPEG, GIF, PNG), audio (MP3, AAC) and video (Cinepak, MPEG-2, H. 264, VP8). There are two kinds of codecs; lossless, and lossy. Lossless codecs, like PKZIP or PNG, reproduce the same exact file as the original upon decompression.
Detailed explanation-3: -The MPEG video compression algorithm relies on two basic techniques: block based motion compensation for the reduction of the temporal redundancy and transform domain based compression for the reduction of spatial redundancy. Motion compensation techniques are applied with both predictive and interpolative techniques.