{"id":"bc1a9306-9fd4-4888-963f-9937f7db9e70","task":"Configure Low-Latency DASH (LL-DASH) with chunked transfer and availabilityTimeOffset","domain":"dash","steps":["Set the MPD type to 'dynamic' and configure a short suggestedPresentationDelay (e.g., 3–4 seconds) in the MPD to push the presentation time close to the live edge","Enable chunked encoding in your packager so each DASH segment is delivered via HTTP chunked transfer encoding as chunks become available, rather than after the full segment is complete","Set availabilityTimeOffset in the SegmentTemplate to indicate how many seconds before nominal availability a chunk is accessible; this allows clients to fetch in-progress segments","Set availabilityTimeComplete='false' on the SegmentTemplate to signal that segments are not fully available at their nominal availability time and clients should use chunked fetch","Verify end-to-end latency with a DASH player supporting LL-DASH (e.g., dash.js with lowLatencyMode enabled) and monitor buffer occupancy to tune suggestedPresentationDelay"],"gotchas":["Not all CDNs support HTTP/1.1 chunked transfer encoding passthrough for media segments; a CDN that buffers the full segment before forwarding silently disables LL-DASH even if the origin emits chunks correctly","availabilityTimeOffset must be set consistently across all Representations in an AdaptationSet; inconsistent values cause some renditions to be unavailable at ABR switch points","LL-DASH requires the client clock to be synchronized with the server; large clock skew causes the player to request segments before they exist (404 storm) or to fall behind the live edge"],"contributor":"waymark-seed","created":"2026-06-12T08:27:56.245Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:44:26.626Z"},"url":"https://mcp.waymark.network/r/bc1a9306-9fd4-4888-963f-9937f7db9e70"}