LL-DASH brings live latency in MPEG-DASH down to a few seconds using CMAF chunked transfer encoding (CMAF-CTE): the encoder emits small chunks within a segment and the CDN streams them to the player via HTTP chunked transfer as they are produced, rather than waiting for the whole segment.
It pairs naturally with CMAF, so the same low-latency chunks can underpin both LL-DASH and LL-HLS, simplifying a dual-protocol setup. As with all low-latency streaming, the gains come from shrinking the buffer, which sharpens the tension between latency and resilience and demands careful ABR and infrastructure tuning.
The handbook · 7 volumes
Fora Soft Video Engineering Handbook
LL-DASH cuts live delay to a few seconds with chunked CMAF transfer, and it only works when encoder, CDN, and player all handle chunked delivery. We wrote seven volumes covering the video stack; for LL-DASH start with Volume 2 on CMAF chunking, MPEG-DASH, and the latency budget, then Volume 1 on encoder delay, with player catch-up in Volume 3. Written by Nikolay Sapunov, CEO at Fora Soft.
Moving to LL-DASH and need every hop to pass chunks through?
We will review your encoder, CDN, and players and send an LL-DASH rollout plan with a measured latency target. 250+ video products shipped since 2005.
