Worked on the FFmpeg/FFmpeg repository to enhance the robustness of live DASH segment handling for video streaming applications. Focused on correcting the logic for cur_seq_no in the dashdec module, the developer addressed issues that caused segment skipping and timeline miscalculations during manifest reloads. By ensuring proper handling when segment number calculations returned -1 and preserving the first sequence number, the changes stabilized real-time playback and reduced user-visible disruptions. The work involved C programming and deep understanding of media processing, resulting in improved runtime reliability for live streaming scenarios without introducing new features, but by resolving a critical bug.