This article explains why the same HDR image can appear dazzling on iPhone yet washed‑out on Android, detailing the underlying HDR technology, the divergent native formats (HEIF Gainmap vs JPEG/UltraHDR), and a cross‑platform solution that preserves high‑dynamic‑range details across devices and apps.
Bilibili's R&D built a cloud-based broadcast console for the 2024 CCTV Spring Festival Gala, delivering 4K HDR streaming, AI SDR-to-HDR conversion, low latency, bandwidth‑aware transcoding, and a synchronized “send bullet screen” interactive feature using custom SEI timestamps for hundreds of millions of viewers.
HDR Vivid, a Chinese HDR standard introduced by the CUVA alliance, expands dynamic range, color gamut, and bit depth with dynamic metadata, tone mapping, and saturation control, and is compared against HDR10, HDR10+, Dolby Vision, and HLG while detailing its technical advantages and current industry adoption.
The UltraFusion HDR algorithm combines generative AI with traditional exposure fusion to recover details and produce natural‑looking high‑dynamic‑range images even when the exposure gap reaches up to 9 EV, turning over‑exposed or under‑exposed shots into high‑quality photos.
The UltraFusion HDR algorithm, developed by Shanghai AI Lab with CUHK and Zhejiang University, combines generative AI with exposure fusion to recover detail and balance lighting even when exposure differences reach up to 9 EV, enabling high‑quality images from ordinary cameras without hardware upgrades.
Kuaishou partners with Dolby Labs to bring full‑chain Dolby Vision to its short‑video platform, detailing the technology behind HDR, dynamic metadata, and a brightness‑adjustment solution that ensures seamless playback and optimal visual experience for user‑generated content across devices.
This article provides a comprehensive technical overview of InfiniBand, covering its rapid adoption in top supercomputers, detailed performance advantages such as ultra‑high bandwidth, CPU offload, sub‑microsecond latency, flexible scalability, QoS, SHARP acceleration, and a comparison with Ethernet, Fibre Channel, and Omni‑Path, while also outlining HDR switch and NIC product families.
Bilibili's color space conversion engine processes user‑uploaded videos with varied color parameters into a unified format, using layered filters, precomputed optimizations, CPU and CUDA implementations, handling transformations, quantization, chroma subsampling, matrix conversion, transfer functions, gamut and tone mapping, HDR dynamic metadata, and achieving high performance for millions of users.
This article provides a detailed technical analysis of Android 14’s Ultra HDR Image feature, explaining its JPEG‑R file structure, the five‑step encoding pipeline, decoding process, and rendering technique, while illustrating each step with diagrams and code excerpts.
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.
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.
This article explains the challenges and techniques for delivering physically‑based, high‑fidelity rendering on mobile platforms, covering material models, lighting equations, spherical‑harmonic baking, HDR workflows, and how the Oasis engine streamlines development with an online editor and cloud tools.
Chrome 97 introduces new privacy controls, allowing users to delete all site data, enhances web app UI to resemble native apps, adds a flag for remembering per‑site zoom on mobile, and brings CSS HDR detection for better visual experiences.
This article analyzes Kuaishou's short‑video quality advantages by detailing its production‑consumption chain, multi‑dimensional evaluation methodology, objective and subjective test results, and key metrics such as bitrate savings, VMAF gains, win and selection rates, supported by visual examples.
iQIYI’s “Frame Qi Cinema” standard tackles the gap between creators’ original visuals and consumer playback by using 4K ultra‑high resolution, HDR, high frame‑rate and immersive sound, applying tailored algorithms for movies, series, animation and variety shows to deliver authentic, high‑quality streaming on TV, PC and mobile.
iQIYI’s “Frame Qiyi Cinema” upgrades mobile streaming to cinema‑grade 4K + HDR + high frame rate + spatial audio, detailing the technology’s components, hardware collaborations, certification process, content production standards, and its role in driving the industry’s ultra‑HD evolution.
iQIYI becomes the first video platform to deliver content meeting the China Ultra‑High‑Definition Video Industry Alliance (CUUVA) HDR standard, enabling devices like Xiaomi 10 Pro, Huawei P30 Pro, iPhone 11 Pro and XS Max to display richer colors, higher contrast, and deeper visual depth, while fostering an open, industry‑wide ecosystem and planning future CUVA HDR live‑streaming support.
This article reviews the evolution of international video standards, explains the technical goals and performance gains of the sixth‑generation VVC codec, details Alibaba DAMO Academy’s contributions, and explores future trends such as deep‑learning‑enhanced video compression.
This article explains the FrameShare ultra‑HD solution, detailing its four core capabilities—high frame‑rate, ultra‑high resolution, HDR rendering, and surround sound—along with the end‑to‑end video pipeline, key technologies such as frame interpolation, HDR tone‑mapping, cloud‑edge collaboration, and the future vision for nationwide ultra‑HD adoption.
This guide explains how to overcome large‑scale 3D map visualization challenges by using off‑screen rendering, framebuffers, and a step‑by‑step Bloom effect implementation—including bright‑area extraction, Gaussian blur, image merging, and HDR integration—in WebGL.
This article analyzes the suite of AI-driven decision systems, interactive multi‑stream playback, 4K/HDR upscaling, smart bitrate selection, anti‑hotlink defenses, and a high‑throughput media‑asset platform that Youku employed to produce and deliver the blockbuster series ‘The Longest Day in Chang’an’.
The article explains how Alibaba/Youku leveraged AI recommendation, big‑data analytics, HDR upscaling, interactive multi‑stream playback, smart bitrate selection, and a robust anti‑leech system to turn the drama “The Longest Day in Chang’an” into a data‑driven blockbuster, detailing the underlying technologies and their impact on production, distribution, and viewer experience.
The article explores how Alibaba/Youku leveraged AI recommendation, big‑data analytics, interactive streaming, HDR reconstruction, smart bitrate selection, anti‑piracy defenses, and a high‑performance media‑asset platform to turn the drama “The Longest Day in Chang’an” into a blockbuster, detailing the underlying technologies and their impact on production and viewer experience.
Youku enhances online video by applying intelligent post‑production contrast mapping, device‑specific HDR tone‑mapping, high‑frame‑rate restoration through frame‑rate conversion, and ROI‑aware encoding that allocates bitrate to key visual areas, complemented by audio processing, to deliver cinema‑grade quality across diverse screens.
