Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A video frame which contains only information on the differences from previous frames
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Examples
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Replacing a P-frame with another P-frame originating from another predictive structure may cause a slight mismatch at the decoder.
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An I-frame might require five times the bits to encode as a P-frame.
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The first P-frame in the stream has more than one reference frame.
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This P-frame stance will reduce the risk of knee injury, result in smoother turns, and also leave you feeling less fatigued.
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I've checked the original video (ending with a P-frame) and go back from the last frame is rendered ok.
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P-frames store only the difference in image from the frame (either an I-frame or P-frame) immediately preceding it (this reference frame is called the anchor frame).
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However, similarly, the future P-frame must still encode all the changes between it and the previous I - or P - anchor frame (a second time) in addition to much of the changes being coded in the B-frame.
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The difference between a P-frame and its anchor frame is calculated using motion vectors on each macroblock of the frame (see below).
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A P-frame can contain any number of intra-coded blocks, in addition to any forward-predicted blocks.
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- iquants min max: I-frame quantizer restriction ([1.31]) - pquants min max: P-frame quantizer restriction ([1.31]) - bquants min max: B-frame quantizer restriction ([1.31]) - trellis: use trellis based R-D "optimal" quantization
Comments
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