SINGLE-PATH VARIABLE BIT RATE VIDEO COMPRESSION
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United States of America Patent
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Issued Date -
Oct 30, 2014
app pub date -
Apr 29, 2013
filing date -
Apr 29, 2013
priority date (Note) -
Abandoned
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Abstract
Apparatuses, computer readable mediums, and methods of encoding video are disclosed. A video comprising a plurality of frames is encoded. The method may determine whether to encode a frame as an interframe (I frame) or a predicted frame (P frame). An I frame may be encoded with a quantization parameter (QP), which may be determined for the I frame. A P frame may be encoded with a QP limited to vary between a lower QP and an upper QP. After encoding N P frames, QP may be adjusted, where N is a fixed or dynamically adjusted number of frames. If a number of bits used to encode the N P frames exceeds a first budget threshold then the value of QP may be raised, and if the number of bits used to encode the N P frames is below a second budget threshold then the value of QP may be lowered.
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