Information om | Engelska ordet P-FRAME

264 video coding standard, the frame can be segmented into sequences of macroblocks called slices, and instead of using I, B and P-frame type selections, the encoder can choose the prediction style distinctly on each individual slice.
The I-frame is used to predict the first P-frame and these two frames are also used to predict the first and the second B-frames.
P-frames provide more compression than I-frames because they take advantage of the data in a previous I-frame or P-frame – a reference frame.
A predicted frame which uses GMC is called an S-frame (sprite frame) while a predicted frame encoded without GMC is called either a P-frame, if it was predicted purely by previous (past) frames, or a B-frame if it was predicted jointly with past and future frames (an unpredicted frame encoded as a whole image is referred to as an I-frame).
Open GOP starts with a B-frame and it is a little more efficient because starting with an I-frame means that an extra P-frame must be added to the end (a GOP cannot end with a B-frame).
less important frames (B-frame) from the buffer are dropped before the more important frames (I-frame and P-frame),.

Förberedelsen av sidan tog: 179,60 ms.

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