Month: 2026-03 Overview: Focused on reliability improvements in the streaming subtitle pipeline for jellyfin/jellyfin, with a targeted backport to stabilize the 10.11.z line. Key feature delivered: - Subtitle Processing Reliability Enhancement: Refactored subtitle extraction by removing -copyts and enabling -flush_packets 1 to improve subtitle embedding and playback across streams. Commit: 42e8a780ca937b0f49b5e61b60adfda4abd465ec (Backport of PR #16440 from jellyfin/release-10.11.z). Impact: - Reduced subtitle-related playback issues, smoother cross-stream playback, and alignment with 10.11.z stabilization. Bugs fixed: - No separate high-severity bugs fixed this month; rationale: reliability-focused feature work. Technologies/skills demonstrated: - FFmpeg flag usage (-flush_packets 1, removal of -copyts), subtitle processing, code refactor for reliability, backporting changes across branches. Business value: - Improved user experience and retention due to more reliable subtitles across devices/streams; supported stability across release lines. Top achievements: - Subtitle Processing Reliability Enhancement: Refactored subtitle extraction to remove -copyts and enable -flush_packets 1, improving subtitle embedding and playback across streams (commit 42e8a780ca937b0f49b5e61b60adfda4abd465ec; backport PR #16440 to release-10.11.z). - Backported changes to release-10.11.z to stabilize the 10.11.z line. - Code refactor of the subtitle extraction path to improve maintainability and prepare for future reliability improvements.