Intra-frame coding
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Intra-frame coding is a data compression technique used within a video frame, enabling smaller file sizes and lower bitrates, with little or no loss in quality. Since neighboring pixels within an image are often very similar, rather than storing each pixel independently, the frame image is divided into blocks and the typically minor difference between each pixel can be encoded using fewer bits.
Intra-frame prediction exploits spatial redundancy, i.e. correlation among pixels within one frame, by calculating prediction values through extrapolation from already coded pixels for effective
Usually only few of the spatially closest known samples are used for the extrapolation. Formats that operate sample by sample like
Inter frame has been specified by the
Coding process
Data is usually read from a video camera or a video card in the
Applications
It is used in codecs like
See also
- Video compression
- I-Frame Delay
- Inter frame
- Group of pictures application of frame types
- Motion compensation
External links