Worked on the ossrs/ffmpeg-webrtc repository to address a critical issue in AV1 bitstream parsing within WebRTC workflows. Focused on C programming and bitstream handling, the developer fixed a bug in the UVLC parsing loop that previously risked reading past the end of the buffer. By updating the loop condition to align with established safe-reading patterns, the solution improved the robustness and correctness of video processing without introducing performance regressions. This targeted fix enhanced the reliability of the media pipeline, reducing edge-case failures and ensuring consistent handling of AV1 bitstreams in real-time communication scenarios using C and video processing expertise.