Specifically, if the sector frame is a prime-based (P-frame
), the SU generates a GCQ-CH based on the n best-quality channels in the sector.
For instance in case of an MPEG image, the video data is comprised of i-frame, p-frame
Let P be a reconstructed P-frame
based on I, and P' be the reconstructed version based on IWM.
"A Fast MB Mode Decision Algorithm for MPEG-2 to H.264 P-Frame
Transcoding", IEEE Transactions on Circuits and Systems for Video Technology, 18(2).
After this packet is sent, it is moved to the I-Frame packet pool or P-Frame
packet pool depending on its attribute.
The total (or cumulative) loss distortion depends on the frame type (I-frame, P-frame
) and position (in the same GOP, the loss of a P-frame
[f.sub.1] leads to more distortion than the loss of a P-frame
[f.sub.2] when [f.sub.1] < [f.sub.2]).
Recall that a P-frame
is a frame in which every cozero element is complemented.
We can classify each frame as intraframe (for short, I-frame), predictive frame (for short, P-frame
), and bidirectional frame (for short, B-frame) which is more compressible than I-frame.
H.264/AVC is a latest standard for video compression in which intra frame (I-frame) and inter frame (P-frame
) are used for generating output bit stream.
Note that [28, Lemma 3.1] concerns sequences satisfying the lower p-frame
condition, but the proof that C is closed does not use the validity of the lower p-frame
Briefly, B-frames can borrow redundancies from the previous and/or next I- or P-frame
. In real-world video, they're helpful, but there's so much motion (and random noise) between frames that after moving two or three frames from an I- or P-frame
, little redundancy exists.