Worked on the FFmpeg/FFmpeg repository to enhance the stability and security of the decoding path by addressing a critical bug in the magicyuv codec. Focused on C programming and video processing, the developer implemented explicit boundary validation for slice_height alignment with chroma vertical subsampling, preventing out-of-bounds memory access and potential crashes. This fix responded directly to a vulnerability identified by external researchers, improving both code safety and maintainability. The work emphasized clear commit documentation and robust validation logic, contributing to more reliable regression coverage and supporting ongoing codec development efforts within the FFmpeg project’s complex codebase.