Zijian Zhang developed video encoding bitrate control for the pion/mediadevices repository, focusing on OpenH264 integration. He extended the C++ bridge to enable dynamic bitrate-based encoding quality and bandwidth management, allowing explicit bitrate configuration for improved efficiency and video quality under varying network conditions. Using C++ and Go, he implemented encoder-level bitrate control, which lays the foundation for adaptive streaming by making video quality more predictable when bandwidth is constrained. Zhang also provided a usage example to demonstrate the new capability. His work reflects a deep understanding of C/C++ interoperability, codec integration, and practical video encoding challenges in real-world applications.