Live segments append at native PTS, so the buffered range sits at a large
timestamp while currentTime starts at 0 — no data at 0, readyState never
advances, playback can't start. seekToLiveEdge watches for the buffered range
and seeks the playhead into it (window start) once present. Listens to events
that fire without data at currentTime (loadedmetadata/durationchange/progress);
once per source. Composed into createLiveHlsEngine.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Add createLiveHlsEngine: reuses the VoD engine's MSE/segment/ABR behaviors,
swaps one-shot resolve* for the per-type live reload loop, defaults
resolveDuration to Infinity, and adds anchorLiveTracks — a behavior that applies
the per-track stream-origin anchor to the selected tracks so segment.startTime ≈
native PTS (what the segment loader matches currentTime against). Cross-track
alignment is intentionally not composed yet (it would fight the per-track anchor
in a re-firing effect); residual skew is absorbed by native-PTS A/V sync.
Demuxed audio+video; text/discontinuity out of scope. Not yet wired to a DOM
element — engine composition + anchor behavior only, both typecheck/build green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Generalize the video-only reload spike into a per-type factory mirroring
resolve-track: reloadVideoTrack / reloadAudioTrack / reloadTextTrack, each
gating on its own selected*TrackId + track type so demuxed audio and video
reload independently. Inject fetchResolvableText via config (parity with
resolve-track, and testable). Update the live-playlist spike to reloadVideoTrack.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
POC spike for live HLS at the playlist layer only (no MSE/segments/DOM):
- parser surfaces target-duration / media-sequence / playlist-type / endlist
into a generic Ham.metadata bag (getMediaPlaylistMetadata accessor), with
stable media-sequence-derived segment ids
- parseMediaPlaylist(text, previous) takes a resolved-or-unresolved prior
track and carries the timeline forward across reloads (media-sequence
overlap + actual durations); first load anchors at 0; targetDuration used
only as the no-overlap fallback
- duration -> Infinity for unended live (finite once VOD/ENDLIST)
- streamType on Presentation, derived from PLAYLIST-TYPE alone
- reloadTrack behavior + createLivePlaylistSpikeEngine composition
WIP: startTime/timestampOffset basis and cross-track (A/V) sync are still
under research; PROGRAM-DATE-TIME capture and the cross-track alignment
strategy are not yet implemented.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
