DEFAULT_GOP_B and PYRAMIDAL_GOP_B GOP Control Modes - 2023.1 English

H.264/H.265 Video Codec Unit v1.2 Solutions LogiCORE IP Product Guide (PG252)

Document ID
PG252
Release Date
2023-05-16
Version
2023.1 English

Two new GOP control modes, Control software and Gstreamer framework are supported

Control_SW

DEFAULT_GOP_B & PYRAMIDAL_GOP_B: Patterns are identical to DEFAULT_GOP and PYRAMIDAL_GOP except that P frames are replaced with B Pictures.

Gstreamer

Omxh264enc/omxh265enc element gop-mode parameter supports these two new settings from 2019.2 onwards, "basic-b" corresponds to DEFAULT_GOP_B and “pyramidal-b” corresponds to PYRAMIDAL_GOP_B.

Figure 1. DEFAULT_GOP_B and PYRAMIDAL_GOP_B patterns