Adaptive Bitrate (ABR) Streaming: Concepts, Protocols, Challenges, and Algorithms

Adaptive Bitrate (ABR) streaming dynamically selects among multiple video representations using protocols like HLS, DASH, and CMAF, leveraging bandwidth predictions and buffer metrics to balance quality and re‑buffering, while evolving through hybrid, buffer‑based, rate‑based, and machine‑learning algorithms for optimal user experience.

ABRMPEG-DASHQoE

0 likes · 12 min read

Adaptive Bitrate (ABR) Streaming: Concepts, Protocols, Challenges, and Algorithms

ITPUB

Aug 21, 2022 · Backend Development

How Bilibili Turned Academic ABR Research into a Mobile Playback Boost

This article examines Bilibili's end‑to‑end journey of adopting, evaluating, and extending academic adaptive bitrate (ABR) algorithms—such as THROUGHPUT, MPC, BOLA, and Pensieve—to improve mobile video QoE, detailing the shortcomings of traditional methods, the design of a real‑time QoE model, network preprocessing, intelligent resolution framework, model deployment, and user‑preference adaptations.

ABRBilibiliQoE

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How Bilibili Turned Academic ABR Research into a Mobile Playback Boost

iQIYI Technical Product Team

Jul 12, 2019 · Artificial Intelligence

Real-Time Evaluation System for Adaptive Bitrate (ABR) Algorithms and Controlled Bitrate Distribution

RESA is a real‑time evaluation platform that continuously tests multiple Adaptive Bitrate (ABR) algorithms on live user traffic, introduces a multi‑user QoE metric derived from viewing behavior, reveals trade‑offs between clarity and bandwidth, and proposes the RL‑based ABSbc algorithm to steer bitrate distribution and balance user experience with network cost.

ABRBandwidth ControlQoE

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Real-Time Evaluation System for Adaptive Bitrate (ABR) Algorithms and Controlled Bitrate Distribution