During October 2025, Zhanquan Cen contributed to the FFmpeg/FFmpeg repository by developing two features focused on LC3 codec integration. He implemented packed float input support for the LC3 encoder, allowing direct encoding from common audio sources and eliminating the need for pre-conversion. Additionally, he enhanced the LC3 decoder to negotiate sample formats and handle both planar and interleaved buffer layouts, improving compatibility with diverse audio pipelines. Working primarily in C, with expertise in audio processing and codec development, Zhanquan demonstrated careful attention to format handling and collaborative version control, delivering targeted improvements without introducing or addressing major bugs.