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Rare Earth Juejin Tech Community
Rare Earth Juejin Tech Community
Dec 18, 2024 · Artificial Intelligence

Personalized Video Streaming and Playback Technology: Methods, Architecture, and Optimization

This article presents a comprehensive study of personalized short‑video streaming and playback, detailing the limitations of traditional audio‑video pipelines, introducing a decision‑theoretic framework that models user, item, and context features, and describing system components such as personalized streaming, quality scheduling, on‑demand delivery, user‑item aware encoding, and resource allocation, all validated through extensive online experiments that demonstrate significant business and performance gains.

CDN optimizationContent DeliveryUser experience
0 likes · 52 min read
Personalized Video Streaming and Playback Technology: Methods, Architecture, and Optimization
Rare Earth Juejin Tech Community
Rare Earth Juejin Tech Community
Oct 18, 2024 · Fundamentals

Fundamentals of Audio and Video Processing, Compression, and Streaming Protocols

This article provides a comprehensive overview of audio and video fundamentals, including signal conversion, PCM encoding, compression techniques, spatial audio concepts, video encoding standards such as H.264/H.265, streaming protocols, bitrate control, and practical optimization algorithms for both audio and video pipelines.

Audio ProcessingStreaming ProtocolsVideo Encoding
0 likes · 49 min read
Fundamentals of Audio and Video Processing, Compression, and Streaming Protocols
Bilibili Tech
Bilibili Tech
Jun 21, 2024 · Industry Insights

How Bilibili’s Video Cloud Tackles Spatial Video and Audio: From MV‑HEVC to Audio Vivid

This article examines Bilibili Video Cloud’s technical exploration of spatial video and spatial audio, comparing traditional 2D encoding with MultiView (MV‑HEVC), detailing the implementation of MV‑HEVC to SBS conversion, and describing the integration of Audio Vivid technology for immersive 3‑D sound.

Audio VividMV-HEVCVideo Encoding
0 likes · 13 min read
How Bilibili’s Video Cloud Tackles Spatial Video and Audio: From MV‑HEVC to Audio Vivid
Alibaba Cloud Infrastructure
Alibaba Cloud Infrastructure
May 24, 2024 · Cloud Computing

Exploring Arm Neoverse: Business Innovation with Yitian Arm Architecture – Insights from the Feitian Technology Salon

The Feitian Technology Salon held on May 16 in Shanghai showcased Arm Neoverse's core advantages and demonstrated how Yitian 710‑based ECS instances deliver significant cost‑effective performance gains for big‑data and video workloads through cloud‑native optimizations and software acceleration techniques.

Big DataVideo Encoding
0 likes · 5 min read
Exploring Arm Neoverse: Business Innovation with Yitian Arm Architecture – Insights from the Feitian Technology Salon
Tencent Architect
Tencent Architect
Dec 4, 2023 · Operations

How AV1 Cut Bandwidth Costs by 59% for a Popular Karaoke App

The 全民K歌 app reduced video bandwidth by 59% and improved playback experience by adopting Tencent's TXAV1 encoder, achieving 60% AV1 playback share, 20% better compression than H.265, and extensive mobile device support through careful transcoding strategies and performance testing.

AV1Mobile StreamingTXAV1
0 likes · 11 min read
How AV1 Cut Bandwidth Costs by 59% for a Popular Karaoke App
DaTaobao Tech
DaTaobao Tech
Nov 27, 2023 · Artificial Intelligence

Taobao Audio‑Video Technology for High‑Quality Live Streaming and Video Processing

Taobao’s audio‑video technology team delivers end‑to‑end high‑definition live‑stream and short‑video solutions—including AI‑enhanced editing, a three‑stage processing pipeline with proprietary S265/S266 codecs, sub‑second GRTN transmission, advanced player features, real‑time audio enhancement, and state‑of‑the‑art AI quality assessment—while earning awards and guiding future mobile VVC optimization.

AIVideo Encodingaudio video
0 likes · 23 min read
Taobao Audio‑Video Technology for High‑Quality Live Streaming and Video Processing
Bilibili Tech
Bilibili Tech
Nov 21, 2023 · Frontend Development

AV1 Video Encoding Standard and BILIAV1 Self-Developed Encoder

AV1, an open royalty‑free video codec finalized in 2018, delivers roughly 20 % lower bitrate than H.265 and is supported by major players and hardware, while Bilibili’s self‑developed BILIAV1 encoder, built from scratch, beats SVT‑AV1 by 15‑20 % bitrate at equal speed through advanced TRACE debugging, parallel processing and optimized algorithms, with future work targeting P2P and live‑streaming applications.

AV1BILIAV1Encoder Development
0 likes · 13 min read
AV1 Video Encoding Standard and BILIAV1 Self-Developed Encoder
Tencent Architect
Tencent Architect
Aug 21, 2023 · Fundamentals

How Tencent Cloud’s V265/TXAV1 Revolutionizes 8K Live Streaming

This article details Tencent Cloud's V265/TXAV1 live streaming solution, covering its high‑efficiency 8K and low‑latency capabilities, performance gains over X265, MV‑HEVC 3D compression, extensive engineering and algorithmic optimizations, and the resulting speed‑up and quality improvements for ultra‑high‑definition live broadcasts.

8KAlgorithm OptimizationLow latency
0 likes · 18 min read
How Tencent Cloud’s V265/TXAV1 Revolutionizes 8K Live Streaming
Tencent Cloud Developer
Tencent Cloud Developer
Aug 2, 2023 · Fundamentals

MV-HEVC and Its Application in 3D Video Encoding for Apple Vision Pro

Apple Vision Pro supports MV‑HEVC, a multi‑view extension of HEVC that reduces inter‑view redundancy, enabling efficient 3D video encoding; Tencent’s V265 encoder implements it, achieving over 50 % bitrate savings for the secondary view and roughly 20 % overall bandwidth reduction while preserving visual quality.

3D videoApple Vision ProMV-HEVC
0 likes · 11 min read
MV-HEVC and Its Application in 3D Video Encoding for Apple Vision Pro
Bilibili Tech
Bilibili Tech
Aug 2, 2023 · Fundamentals

BILIVVC Secures Third Place in 2022 MSU Encoder Competition (1080p 1fps & 5fps)

Bilibili’s self‑developed VVC encoder, BILIVVC, earned third place in both the 1080p 1 fps and 5 fps tracks of the 2022 MSU Encoder Competition by leveraging extensive VVC‑tool optimizations, fast‑algorithm cooperation, adaptive pre‑analysis and efficient implementation that deliver high quality YUV‑SSIM performance despite its small‑team, one‑year development.

Algorithm OptimizationBILIVVCMSU Encoder Competition
0 likes · 7 min read
BILIVVC Secures Third Place in 2022 MSU Encoder Competition (1080p 1fps & 5fps)
Baidu Geek Talk
Baidu Geek Talk
Jun 9, 2022 · Fundamentals

H.265 Video Encoding Principles and Technical Framework

The article explains H.265 (HEVC) encoding fundamentals, describing its two‑layer VCL/NAL architecture, quad‑tree CTU hierarchy, intra‑ and inter‑frame prediction, DCT/DST transform coding, quantization, CABAC entropy coding, and loop‑filtering techniques that together achieve roughly 50 % bitrate reduction while preserving quality.

H.265HEVCVideo Encoding
0 likes · 17 min read
H.265 Video Encoding Principles and Technical Framework
High Availability Architecture
High Availability Architecture
Apr 22, 2022 · Artificial Intelligence

BIGO RTC: High‑Quality, Low‑Cost Real‑Time Communication through Core Operators and Scene Adaptation

The article explains how BIGO RTC achieves high‑quality, low‑cost real‑time audio‑video communication by optimizing core video operators such as HEVC encoding, AI‑driven super‑resolution and HDR, and by employing scene‑adaptive techniques like device performance tuning, content‑adaptive encoding and AI‑based pre‑processing to meet diverse latency constraints.

AI AdaptationHDRHigh Quality
0 likes · 9 min read
BIGO RTC: High‑Quality, Low‑Cost Real‑Time Communication through Core Operators and Scene Adaptation
Tencent IMWeb Frontend Team
Tencent IMWeb Frontend Team
Mar 21, 2022 · Fundamentals

Why Video Encoding Matters and How Scalable Video Coding (SVC) Works

Video encoding reduces massive raw video data by removing spatial and temporal redundancies, and Scalable Video Coding (SVC) extends traditional codecs with layered streams that adapt to varying bandwidth, resolution, and quality, offering benefits like single-pass encoding, packet loss resilience, and broad compatibility.

H.264SVCVideo Encoding
0 likes · 6 min read
Why Video Encoding Matters and How Scalable Video Coding (SVC) Works
Kuaishou Large Model
Kuaishou Large Model
Jan 7, 2022 · Mobile Development

How to Cut Mobile Texture Memory by 75% with Macro‑Block Compression

This article presents a macro‑block based texture compression technique that removes hollow (alpha‑zero) regions from textures, dramatically reduces memory usage on mobile devices, and restores the original visual quality during rendering, even after video encoding.

OpenGLTexture CompressionVideo Encoding
0 likes · 11 min read
How to Cut Mobile Texture Memory by 75% with Macro‑Block Compression
Alibaba Terminal Technology
Alibaba Terminal Technology
Dec 6, 2021 · Backend Development

How We Achieved Low‑Latency, High‑Definition Multi‑Angle Live Streaming with WebRTC

This article details the design and implementation of a low‑latency, high‑definition multi‑angle live streaming solution using WebRTC, covering protocol selection, system architecture, edge commands, client integration, performance optimizations, and lessons learned from deploying the feature in a large‑scale live event.

Edge ComputingLow latencyVideo Encoding
0 likes · 15 min read
How We Achieved Low‑Latency, High‑Definition Multi‑Angle Live Streaming with WebRTC
NetEase Smart Enterprise Tech+
NetEase Smart Enterprise Tech+
Oct 13, 2021 · Fundamentals

Optimizing H.265 in NetEase Cloud RTC: Capability Negotiation & Platform Benchmarks

This article explains how NetEase Cloud RTC implements H.265 video encoding, covering capability negotiation design, cross‑platform performance tests on Android, iOS, macOS and Windows, and engineering strategies such as whitelist policies, CPU overuse handling, QP threshold tuning, and the resulting quality and efficiency benefits.

H.265Performance OptimizationVideo Encoding
0 likes · 17 min read
Optimizing H.265 in NetEase Cloud RTC: Capability Negotiation & Platform Benchmarks
WeChat Client Technology Team
WeChat Client Technology Team
Aug 10, 2021 · Mobile Development

How We Built a Cross‑Platform Hardware‑Accelerated Live‑Streaming SDK for WeChat Video Channels

This article details the design and implementation of a cross‑platform SDK that enables external hardware devices to stream live video on WeChat Video Channels, covering user authentication, network signaling, UI integration, audio‑video encoding, and hardware acceleration across Android, iOS, PC and embedded platforms.

Hardware accelerationSDKVideo Encoding
0 likes · 11 min read
How We Built a Cross‑Platform Hardware‑Accelerated Live‑Streaming SDK for WeChat Video Channels
New Oriental Technology
New Oriental Technology
May 31, 2021 · Fundamentals

Live Streaming Network Transmission: Protocols, Encoding, Decoding, and Synchronization

This article explains the end‑to‑end live‑streaming workflow, covering how a broadcaster pushes video and audio to a server, the various streaming protocols (RTMP, HTTP‑FLV, HLS, RTP), encoding formats, FFmpeg‑based decoding, hardware vs software decoding, and audio‑video synchronization techniques.

Audio-Video SyncNetwork ProtocolsStreaming
0 likes · 26 min read
Live Streaming Network Transmission: Protocols, Encoding, Decoding, and Synchronization
Tencent Cloud Developer
Tencent Cloud Developer
Nov 18, 2020 · Backend Development

Advanced Video Encoding Techniques in Tencent Meeting: Temporal SVC, ROI‑Based Encoding, Screen Content Coding, and YUV444 Support

Tencent Meeting enhances real-time video quality and bandwidth efficiency by using temporal scalable video coding to protect against packet loss, ROI-based encoding that prioritizes faces, screen-content coding with intra-block copy and palette modes, YUV444 chroma support for accurate colors, and highly optimized proprietary H.264/H.265 encoders that deliver up to 84% compression improvement.

ROI encodingScreen Content CodingVideo Encoding
0 likes · 11 min read
Advanced Video Encoding Techniques in Tencent Meeting: Temporal SVC, ROI‑Based Encoding, Screen Content Coding, and YUV444 Support
Beike Product & Technology
Beike Product & Technology
Jul 10, 2020 · Mobile Development

How to Build a Live Streaming App: Architecture, Technologies, and Implementation Guide

This article explains the complete live‑streaming workflow—from video/audio capture on the broadcaster side, through encoding, transmission, server processing, and playback—while comparing third‑party services with self‑built solutions and providing concrete iOS code examples using AVFoundation, LFLiveKit and GPUImage.

AVFoundationGPUImageLFLiveKit
0 likes · 20 min read
How to Build a Live Streaming App: Architecture, Technologies, and Implementation Guide
iQIYI Technical Product Team
iQIYI Technical Product Team
Jun 19, 2020 · Fundamentals

Interview on iQIYI's QAV1 AV1 Encoder and Its Technical Advantages

iQIYI’s scientist Wang Zhihang explains that their home‑grown QAV1 AV1 encoder, built to overcome AV1’s high computational cost, delivers roughly five‑times faster encoding than SVT‑AV1 while matching compression efficiency, uses less than half the resources of x265, supports 1080p‑8K, multiple speed tiers, and is poised for broader hardware adoption as mobile SoCs add native AV1 decoding.

AV1Codec OptimizationHardware Decoding
0 likes · 6 min read
Interview on iQIYI's QAV1 AV1 Encoder and Its Technical Advantages
iQIYI Technical Product Team
iQIYI Technical Product Team
May 8, 2020 · Backend Development

iQIYI Deploys AV1 Video Codec and Introduces QAV1 Encoder for Bandwidth Savings

iQIYI has become the first Chinese video platform to deploy the open‑source AV1 codec on its PC web and Android apps, cutting video file size by about 20%, and its in‑house QAV1 encoder further reduces bitrate over 40% and runs roughly five times faster than competing encoders, enabling smoother 4K/8K streaming while saving bandwidth.

AV1MultimediaQAV1
0 likes · 5 min read
iQIYI Deploys AV1 Video Codec and Introduces QAV1 Encoder for Bandwidth Savings
Youku Technology
Youku Technology
Dec 18, 2019 · Operations

Technical Strategies and Achievements of Alibaba Entertainment 2019 Double‑11 Cat Night Live Streaming

Alibaba Entertainment’s 2019 Double‑11 Cat Night live stream combined FPGA‑based H.265 transcoding, smart‑profile QoE adaptation, Dolby Atmos audio and frame‑aligned multi‑view video to deliver ultra‑HD 4K60 streams at 35% lower bandwidth cost, achieving zero failures, zero degradations and over 99.99% service availability.

Dolby AtmosFPGAVideo Encoding
0 likes · 19 min read
Technical Strategies and Achievements of Alibaba Entertainment 2019 Double‑11 Cat Night Live Streaming
58 Tech
58 Tech
Aug 23, 2019 · Fundamentals

Importance of Video Encoding and Short Video SDK Encoding Solutions

The article explains why video encoding is essential for compression and compatibility, describes the video data processing pipeline, compares four encoding schemes (ffmpeg+x264, openh264, MediaRecorder, MediaCodec) offered by a short‑video SDK, and recommends suitable solutions for various recording and streaming scenarios.

AndroidH264MediaCodec
0 likes · 9 min read
Importance of Video Encoding and Short Video SDK Encoding Solutions
Tencent Cloud Developer
Tencent Cloud Developer
Jun 27, 2019 · Cloud Computing

Tencent Cloud Enables 5G Ultra-HD Live Streaming for Korean Baseball League with 8K/16K Multi-Tile Encoding

Tencent Cloud, together with CUDO Communications and Intel, is using its Extreme HD 2.0 multi‑tile encoding to stream 8K/16K ultra‑HD Korean Baseball League games over South Korea’s new 5G network, enabling independent tile decoding, high frame rates, and zoom‑in detail while preserving bandwidth and picture quality.

5G streaming8K videoTencent Cloud
0 likes · 7 min read
Tencent Cloud Enables 5G Ultra-HD Live Streaming for Korean Baseball League with 8K/16K Multi-Tile Encoding
360 Quality & Efficiency
360 Quality & Efficiency
Mar 8, 2019 · Fundamentals

Video Playback Testing: Key Performance Metrics, Core Concepts, and Essential Tools

This article introduces video playback testing by outlining essential performance metrics, explaining fundamental video processing concepts such as demuxing, decoding, and synchronization, describing common encoding formats and frame‑rate considerations, and reviewing practical tools like FFmpeg and MediaInfo for analysis.

Video Encodingffmpegmediainfo
0 likes · 6 min read
Video Playback Testing: Key Performance Metrics, Core Concepts, and Essential Tools
iQIYI Technical Product Team
iQIYI Technical Product Team
Nov 2, 2018 · Artificial Intelligence

iQIYI Tech Salon Session 3 (Beijing): AI Technology Practices and Applications

The third iQIYI Tech Salon in Beijing, held despite strong winds, showcased five expert talks on AI‑driven video library management, NLP for entertainment content, AI‑based video encoding, traffic anti‑fraud systems, and short‑video personalized recommendation, illustrating AI’s impact on content creation, quality, security, and user experience.

AINLPRecommendation Systems
0 likes · 5 min read
iQIYI Tech Salon Session 3 (Beijing): AI Technology Practices and Applications
Tencent Cloud Developer
Tencent Cloud Developer
Jun 15, 2018 · Mobile Development

Technical Deep Dive: Short Video Editing Implementation Principles

Senior Tencent Cloud Video engineer explains that short‑video editing requires decoding compressed MP4/MOV files into frames, applying synchronized audio and visual effects, preprocessing for frame‑by‑frame access to avoid drag‑stutter, generating previews, and re‑encoding, illustrated with a radiating zoom effect example.

Tencent CloudVideo DecodingVideo Editing
0 likes · 12 min read
Technical Deep Dive: Short Video Editing Implementation Principles
QQ Music Frontend Team
QQ Music Frontend Team
May 27, 2018 · Frontend Development

Mastering Web Live Streaming: From Capture to Playback

This article walks through the complete web live‑streaming workflow—covering capture sources, video/audio processing, H.264 encoding, RTMP push, transcoding, CDN distribution, HLS playback, pseudo‑fullscreen tricks, adaptive sizing, playback detection, and a custom SDK—providing practical guidance for building robust live video experiences.

RTMPVideo Encodinghls
0 likes · 16 min read
Mastering Web Live Streaming: From Capture to Playback
Qizhuo Club
Qizhuo Club
Mar 21, 2018 · Mobile Development

How to Encode and Mux MP4 Video on Android Using MediaCodec and MediaMuxer

This tutorial explains how to use Android's MediaCodec to encode video frames—either via byte arrays or an input Surface—and then combine the encoded video with audio using MediaMuxer to produce a synchronized MP4 file, complete with code samples and step‑by‑step guidance.

AndroidMediaCodecMediaMuxer
0 likes · 17 min read
How to Encode and Mux MP4 Video on Android Using MediaCodec and MediaMuxer
360 Quality & Efficiency
360 Quality & Efficiency
Mar 8, 2018 · Mobile Development

Common Pitfalls and Solutions When Testing Mobile Video Ads

This article outlines typical issues such as unsupported video codecs and odd pixel dimensions that testers encounter with mobile video ads, and provides practical solutions including transcoding to H264, enforcing even resolution, and recommending useful tools like Format Factory and MediaInfo.

H264H265Video Encoding
0 likes · 3 min read
Common Pitfalls and Solutions When Testing Mobile Video Ads
21CTO
21CTO
Sep 13, 2017 · Mobile Development

Mastering Android Video Encoding: Choosing Encoders and Optimizing YUV Processing

This article examines Android video recording challenges, compares hardware (MediaCodec) and software (FFmpeg + x264/openh264) encoders, highlights device‑specific pitfalls such as color‑format support and alignment, and presents fast NEON‑based algorithms for scaling, rotation, and mirroring of YUV frames.

AndroidHardware accelerationMediaCodec
0 likes · 12 min read
Mastering Android Video Encoding: Choosing Encoders and Optimizing YUV Processing
WeChat Client Technology Team
WeChat Client Technology Team
Aug 23, 2017 · Mobile Development

Mastering Android Video Encoding: Choosing Codecs and Optimizing YUV Processing

This article examines Android video encoding challenges, compares hardware (MediaCodec) and software (FFmpeg+x264/openh264) codecs, and presents fast YUV frame preprocessing techniques—including scaling, rotation, and mirroring—using NEON optimizations to achieve high‑quality, low‑latency recordings.

AndroidMediaCodecNEON Optimization
0 likes · 15 min read
Mastering Android Video Encoding: Choosing Codecs and Optimizing YUV Processing
Baidu Intelligent Testing
Baidu Intelligent Testing
Dec 12, 2016 · Mobile Development

Comprehensive Guide to iOS Live Streaming App Development: Architecture, Protocols, and Implementation

This article provides a detailed walkthrough of building an iOS live‑streaming application, covering the end‑to‑end workflow from video/audio capture, encoding, and transmission to playback, while explaining key protocols, container formats, GPUImage processing, and code examples for developers.

Mobile DevelopmentRTMPVideo Encoding
0 likes · 21 min read
Comprehensive Guide to iOS Live Streaming App Development: Architecture, Protocols, and Implementation
Architecture Digest
Architecture Digest
Nov 17, 2016 · Fundamentals

Video Live Streaming Quality Issues, Evaluation Methods, and System Design

This article examines common video live‑streaming quality problems, explains their causes, describes both subjective and objective evaluation methods—including FR, NR, and RR metrics—and outlines a practical system for building and conducting comprehensive video quality assessments.

Video Encodingobjective metricsquality assessment
0 likes · 16 min read
Video Live Streaming Quality Issues, Evaluation Methods, and System Design
360 Quality & Efficiency
360 Quality & Efficiency
Jul 28, 2016 · Fundamentals

Fundamentals of Audio/Video Encoding and ffmpeg Command Basics

This article introduces ffmpeg as a powerful multimedia framework, explains container formats, bitrate, resolution, and frame rate concepts, outlines key live‑streaming performance metrics, and provides essential ffmpeg command‑line options and examples for streaming and transcoding.

StreamingVideo Encodingaudio encoding
0 likes · 6 min read
Fundamentals of Audio/Video Encoding and ffmpeg Command Basics