QoE | BestHub

OPPO Kernel Craftsman

Apr 18, 2025 · Backend Development

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.

ABRBandwidth PredictionHLS

0 likes · 12 min read

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

Bilibili Tech

Jan 19, 2024 · Operations

Optimizing Bandwidth Cost and User Experience in Bilibili's VOD Player through Intelligent Caching and Preloading Strategies

Bilibili’s VOD player cuts bandwidth waste and costs by up to 15% through an intelligent caching and pre‑loading system that evaluates network risk and user habits to size cache dynamically, reduces stalls by 20% in vertical mode, and is continuously refined via a multi‑layer monitoring framework.

BilibiliIntelligent CachingPreloading

0 likes · 17 min read

Optimizing Bandwidth Cost and User Experience in Bilibili's VOD Player through Intelligent Caching and Preloading Strategies

Ximalaya Technology Team

Jul 13, 2023 · Mobile Development

Ximalaya Live Streaming Instant-Start Optimization Practices

Ximalaya improves live‑stream start‑up by measuring first‑frame latency, optimizing push (dynamic bitrate, GOP caching) and pull (RTMP/HTTP‑FLV, HttpDNS, pre‑fetch URLs, progressive component loading, pre‑render SurfaceView, low‑buffer water‑level) across detailed pipeline stages, achieving over 90 % audio and 85 % video instant‑open rates while planning H.265 adoption.

HTTP-FLVLive StreamingMobile Development

0 likes · 14 min read

Ximalaya Live Streaming Instant-Start Optimization Practices

Rare Earth Juejin Tech Community

Jan 16, 2023 · Operations

Low‑Latency Video Streaming Optimizations for Douyin During the World Cup

This article details the end‑to‑end low‑latency video streaming architecture, measurement methods, and optimization techniques—including FLV‑2s, RTM, MiniSDP, buffer‑driven speed‑up, and CDN strategies—that Douyin's Volcano Engine video cloud employed to achieve sub‑2‑second latency and high QoE for World Cup live broadcasts.

Cloud VideoLow LatencyOptimization

0 likes · 21 min read

Low‑Latency Video Streaming Optimizations for Douyin During the World Cup

Bilibili Tech

Sep 27, 2022 · Artificial Intelligence

Comprehensive Video Quality Evaluation Practices at Bilibili: From Subjective and Objective Metrics to HDR Assessment

Bilibili’s comprehensive video‑quality framework merges ITU‑R BT.500 subjective MOS testing with objective metrics such as PSNR, SSIM, VMAF and NIQE—including HDR10 and HLG assessment—through a full capture‑to‑encoding workflow, addressing alignment and content‑specific challenges and delivering measurable QoE and speed gains across its platforms.

HDRPSNRQoE

0 likes · 24 min read

Comprehensive Video Quality Evaluation Practices at Bilibili: From Subjective and Objective Metrics to HDR Assessment

Youku Technology

Aug 10, 2022 · Artificial Intelligence

Youku Moku Lab's QoEVMA Workshop at ACM MM 2022: Advancing Quality of Experience in Visual Multimedia Applications

At ACM MM 2022, Youku Moku Lab chaired the pioneering QoEVMA workshop, receiving 14 international submissions and accepting eight papers that advanced Quality of Experience assessment for diverse visual multimedia formats, while showcasing the lab’s free‑viewpoint video technology deployed in major events such as the 2022 Beijing Winter Olympics.

ACM MMFree Viewpoint VideoKPI

0 likes · 5 min read

Youku Moku Lab's QoEVMA Workshop at ACM MM 2022: Advancing Quality of Experience in Visual Multimedia Applications

Baidu Geek Talk

Jul 12, 2021 · Backend Development

Optimization of Baidu Live Streaming Startup Process

Baidu’s live‑streaming startup latency was cut dramatically by streamlining the business‑scene flow, deploying device‑specific playback schemes, using HTTPDNS pre‑fetch, enhancing the kernel and media parsing, and pre‑loading HLS indexes, collectively delivering faster first‑screen times and improved QoE across iOS and Android devices.

DNS Pre-fetchLive StreamingMobile Development

0 likes · 12 min read

Optimization of Baidu Live Streaming Startup Process

Youku Technology

Jun 29, 2020 · Backend Development

Youku Intelligent Bitrate (Smart Profile): Design, Implementation, and Optimization

Youku’s Intelligent Profile introduces a smart‑bitrate system that dynamically selects the optimal video quality using speed‑based, buffer‑based, hybrid and reinforcement‑learning strategies, replaces traditional ABR’s limited predictions, gathers client metrics for continuous offline analysis, and has already raised high‑definition playback above 90% while halving stall rates across mobile OTT and live streaming.

BackendOptimizationQoE

0 likes · 22 min read

Youku Technology

Aug 26, 2019 · Artificial Intelligence

Technical Deep Dive of Adaptive Streaming for “The Longest Day in Chang'an”: AI, Big Data, and QoE Optimization

Alibaba Entertainment’s technical deep‑dive reveals how its Smart Bitrate system leverages big‑data analytics, AI‑driven machine‑learning (including MPC and the Pensieve model) to dynamically select 5‑10‑second video segments, optimizing QoE by balancing high‑definition playback and buffering, achieving 5‑10% more HD viewing and 10‑20% fewer stalls for “The Longest Day in Chang’an.”

AIBig DataMPC

0 likes · 10 min read

Technical Deep Dive of Adaptive Streaming for “The Longest Day in Chang'an”: AI, Big Data, and QoE Optimization

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.

ABRQoEStreaming

0 likes · 23 min read

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

Tencent Cloud Developer

Apr 26, 2018 · Frontend Development

Tencent Cloud H5 Voice Communication QoE Optimization: WebRTC QoS Techniques and Congestion Control

Tencent Cloud’s H5 voice‑communication solution improves QoE by applying a comprehensive WebRTC QoS framework—bandwidth estimation, adaptive congestion control, loss‑resilient FEC/NACK, latency and jitter mitigation, and global node optimization—while addressing interoperability challenges and continuously refining performance through monitoring, AB‑testing, and extensive bug fixes.

Audio-VideoCloud CommunicationFEC

0 likes · 13 min read

Tencent Cloud H5 Voice Communication QoE Optimization: WebRTC QoS Techniques and Congestion Control