The Challenge:
Project Challenge Proposed by: Comcast
Supported by Champions: Comcast, BT Media & Broadcast, AP (Associated Press), Globo
Participants: Videoclarity, Castlabs, Ateme, AMD, HP
Proposed by Champion, Comcast, this project set out to achieve social media equivalent latencies and near-instant playback start using standard HTTP streaming technical stack and infrastructure.
The areas explored were the use of low-latency encoding and segment-based ingest, the latest low-delay extensions to MPEG DASH, and possible uses of MV-HEVC video codec and the QUIC protocol.
The PoC explored an end-to-end system comprising an encoder, a latency-optimized origin, and a mix of open-source and proprietary DASH players.
Ultimately, the innovation aim of this phase was to achieve Sub-2s glass-to-glass delay (with standard adaptive streaming), which will allow premium sports experiences – especially important for fan engagement.
The approach of the project was critical as it needed to be an open, non-proprietary solution that would be scalable with tight synchronisation across all viewers. In essence the project experimented with technologies that are coming to the mainstream to see how they can vastly improve on something that the Champions are already providing.
The POC Objectives:
Provide a streaming solution for premium sports experience
REQUIREMENTS:
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Latency same or better than terrestrial broadcast, equivalent to social media
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1-3s latency needed to maintain fan engagement
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Good enough for betting
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Tight synchronization across all viewers
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Scalability
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Non-proprietary solution
The POC Results:
The team actually achieved and demonstrated at IBC2024 a 1.8s end to end latency, in a way that was interoperable with the current DASH and HLS deployments.
Highlights:
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Single-gen encoding architecture
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DASH-IF Live Ingest
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L3D-DASH
Performance:
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1.8s contribution-to-glass latency (across US)
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~1s average improvement in tune-in and zapping times
You can hear more about the results in the videos discussing the outcome at IBC2024 along with the presentation.
Supported by:
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