Progressive scanning (e.g., 1080p) differs from interlaced scanning (1080i) because it:
Progressive scanning draws every line of the frame sequentially from top to bottom, eliminating motion flickering and combing artifacts.
In MPEG video compression, an 'I-frame' (Intra-coded frame) is defined as:
I-frames (Intra-coded) act as standalone reference keyframes compressed without reference to any other video frames.
In MPEG temporal compression, a 'P-frame' (Predicted frame) uses:
P-frames achieve higher compression by storing vector motion differences relative to earlier anchor frames.
In MPEG video streams, a 'B-frame' (Bi-directional predicted frame) achieves maximum compression by referencing:
B-frames utilize bidirectional inter-frame motion interpolation referencing both past and future I or P frames.
A GOP (Group of Pictures) structure in MPEG video streaming always begins with a:
A GOP sequence must open with an I-frame keyframe to establish an independent decoding starting point.