On November 6, 2015, LG announced that their 2015 4K OLED TVs would support HDR from HLG and Perceptual Quantizer ( PQ ).
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Given two files of identical sizes, the one encoded at an average bitrate should look better than the one encoded with a fixed quantizer ( variable bitrate ).
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In some designs, rather than optimizing for a particular number of classification regions M, the quantizer design problem may include optimization of the value of M as well.
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HDR transfer functions that better match the human visual system than a conventional gamma curve include the Hybrid Log-Gamma ( HLG ) and Perceptual Quantizer ( PQ ).
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In a conventional ADC, an analog signal is integrated, or sampled, with a sampling frequency and subsequently quantized in a multi-level quantizer into a digital signal.
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The frame-level quantizer is either dynamically selected by the encoder to maintain a certain user-specified bitrate, or ( much less commonly ) directly specified by the user.
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The indices produced by an M-level quantizer can be coded using a fixed-length code using R = \ lceil \ log _ 2 M \ rceil bits / symbol.
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However, it is common to assume that for many sources, the slope of a quantizer SQNR function can be approximated as 6 dB / bit when operating at a sufficiently high bit rate.
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The Multiple Arbitrary Function Generator ( or MARF ) goes well beyond what a typical sequencer is capable of performing and is capable of acting as an envelope generator, voltage quantizer or tracking generator.
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FFmpeg supports decoding of " Sorenson Vector Quantizer 3 " ( fourcc SVQ3 ) and Sorenson Vector Quantizer 1 ( fourcc SVQ1 ) starting with version 0.4 . 7, released in 2003.
