Dynamic insertion of B-Frames is the ability to change the number of B-Frames in a GOP while the encoder is active. This feature improves visual quality and compression efficiency if video complexity changes within a single stream.
This is beneficial for video recording and streaming use cases.
For more information on Dynamic insertion of B-Frames, see Dynamic GOP in H.264/H.265 Video Codec Unit LogiCORE IP Product Guide (PG252).