Worked on enhancing media streaming reliability in the jellyfin/jellyfin repository by refining HLS segment length calculations for remuxed content. Focused on addressing issues with fractional framerates in transcoded videos, the solution improved playback stability by ensuring more accurate segment timing. The approach involved backporting and integrating changes from the release-10.11.z branch to maintain compatibility with the 10.11.x release line, applying critical commits to lock in the refinement. Leveraged C# for backend and API development, with a strong emphasis on HLS timing math and remux/transcoding workflows. The work resulted in smoother, more consistent HLS playback for end users.