正解:A
"Dynamic FPS (frames per second) is a Zipstream setting that automatically lowers the frame rate when there is no activity in the scene, thus saving bandwidth and storage."
- Axis Zipstream Technology Overview
"Dynamic FPS reduces the frame count during low-activity periods to optimize bandwidth and storage usage."
- Axis Communications Academy, Network Video Fundamentals, 2022
References:
Axis Web Article: Zipstream Technology
Axis Communications Academy, Network Video Fundamentals, 2022 (p. 61)