5.1.21 (2026-08-28)
Bug Fixes
- Add support for embedded closed captions and improve timestamp rollover handling in HLS and VTT parsers (#10425) (0445b71)
- Ads: Send ad tracking events via GET (#10469) (570e454)
- DASH: Live to VOD transition with multi period start not at 0 (#10480) (ef8072d)
- Prevent long buffering on seeks after period transitions (#10484) (efe9fbf)
- Transmux: Support audio-only MPEG-TS renditions labeled 'labeled 'audio/mp2t' (#10473) (544b862)
- TS: Fix slice_type parsing in multi-slice H.264 frames (#10477) (3749b68), closes #10468
- UI: Include end boundary when matching last chapter (#10475) (77d78af)