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Mobile Video Market Trends 2016

Date post:22-Jan-2017
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  • AgendaQuality ChangeResolution / fps / Color DepthCodecsNew MediaCoding MachinesCPU->GPU / Cloud*

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  • Improving Video Quality*Increase temporal resolutionMore frame: 24 ~ 100 Fps

  • Increase view points, viewing angle *More View (3D): Stereo, Multiple view, free view

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  • Improving Video ResolutionMore pixels: SD HD UHD (4k, 8K)Increase spatial resolutionHDTVUHDTVSDTV

  • Moving to HDRHDR quality is noticeable from any distance and screen sizeResolution is only apparent when you are closeHDR is more important for video quality than 4K (Netflix)

    I would much rather have a dynamic 2K HDTV than more pixels. Something with great blacks or great HDR, that is more impactful. Resolution is only apparent when you are close

    Fundamentally, the video expert believes that 4K is just the tip of the iceberg and the least impressive part of what we should soon be seeing with video display technology.*

  • Improving Video Quality

    More pixels info (Better pixel) Higher contrast: SDR vs. HDRn f-stops = a difference of 2n : 1 contrast ratioQuantization bit: 8 10 12strong contrast between the bright parts and the dark parts of an image

    10 f-stops = a difference of 210 = 1024: 1 contrast ratio.14 f-stops = a difference of 214 = 16,384: 1 contrast ratio.16 f-stops = a difference of 216 = 65,536: 1 contrast ratio. 100,000:1 is normally regarded as approximately the range that the eye can see in a scene with no adaptation. 20 f-stops = a difference of 220 = 1,048,576: 1 contrast ratio. 1,000,000:1 is normally regarded as approximately the range that the eye can see in a scene with minimal (no noticeable) adaptation.*

  • *SDRHDR

  • Problem of Static Range*

  • Wider Color Gamut Current color gamut is limited Current HDTV (BT.709) 1990Created for CRT, and HDTVAround 100 nits. 8 bpp

    *More Colors: REC. 2020 for UHDTV 10, 12 bpp.

    For example, a light bulb can have more than 10,000 cd/m2, surfaces lit in the sunlight can have brightness upwards of hundreds of thousands of cd/m2, while the night sky can be 0.005 cd/m2 or lower.

    In color reproduction, including computer graphics and photography, the gamut, or color gamut /mt/, is a certain complete subset of colors. The most common usage refers to the subset of colors which can be accurately represented in a given circumstance, such as within a given color space or by a certain output device.*

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  • Media Coding trendsCPU Coding -> GPU CodingPC->CloudPrivate API from Intel & NvidiaPulic/Standardized APIOpenVXOpenCLFFMPEG

  • Moores LawSerial scaling performance has reached its peak.Processors are not getting faster, but wider

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  • GPUs

    Up until now its maybe been only a few threads ~4-24 on multi-core, multi-CPU workstation. Now we enter the land of the GPU, where anything less than thousands of threads is considered bad.*

  • CPU vs GPUGPU devotes more transistors to data processing

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  • GPU Video coding optionsIntel Intel Media SDK API High level APIFEI API Lower level API which enables improved coding controlNvidia NVEncode SDK High level APIFFMPEGH264_QSV Encoder (and decoder) filter for Intel GPUNVEnc filter for Nvidia GPU

  • Comparison Quality vs PerformanceSource: http://on-demand.gputechconf.com/gtc/2016/presentation/s6226-abhijit-patait-high-performance-video.pdf

  • ApplicationIncreased usage of live videoTwitch, YT GamingFacebook liveMusic as a monetization featureYoutube is turning to musicAR and VR*

  • Audio TrendsWe see regular streaming going toward higher bitrates with the following formats:FLAC / ALAC usually 1411Kb (already exists in some sites). Lossless compression of PCMMP4 AAC SLS MP4 AAC Scalable Lossless codec. A relatively new format from 2014. The Codec is made of a base layer encoded as basic AAC with one or more enhancement layersMQA - Master Quality Authenticated A new codec for lossless audioHi-Res Music A new Quality certification by RIAARequires streaming with MQA or MP4 AAC SLS codingAbout 1.5MbBitrate Peeling

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  • Oclus RIFTAudio is usually 4 separate channels but streamed together in a single Ogg file unlike 5.1 for example which are jointly coded channelsNo possibility for Audio throttling

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  • HTTPS, DRM, SPDY, QUICIncreased use of Encryption and DRMExpect 80% of video traffic to be encrypted/DRMedMove toward ABR SPDY -> HTTP2.0 (not much of a difference)QUIC traffic might increase to 10% Of total traffic*

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    Thank you!More About me:Yossi [email protected]+972-545-313092Video compression, computer vision and Machine Learning instructor

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    *I would much rather have a dynamic 2K HDTV than more pixels. Something with great blacks or great HDR, that is more impactful. Resolution is only apparent when you are close

    Fundamentally, the video expert believes that 4K is just the tip of the iceberg and the least impressive part of what we should soon be seeing with video display technology.*10 f-stops = a difference of 210 = 1024: 1 contrast ratio.14 f-stops = a difference of 214 = 16,384: 1 contrast ratio.16 f-stops = a difference of 216 = 65,536: 1 contrast ratio. 100,000:1 is normally regarded as approximately the range that the eye can see in a scene with no adaptation. 20 f-stops = a difference of 220 = 1,048,576: 1 contrast ratio. 1,000,000:1 is normally regarded as approximately the range that the eye can see in a scene with minimal (no noticeable) adaptation.*For example, a light bulb can have more than 10,000 cd/m2, surfaces lit in the sunlight can have brightness upwards of hundreds of thousands of cd/m2, while the night sky can be 0.005 cd/m2 or lower.

    In color reproduction, including computer graphics and photography, the gamut, or color gamut /mt/, is a certain complete subset of colors. The most common usage refers to the subset of colors which can be accurately represented in a given circumstance, such as within a given color space or by a certain output device.*

    *Up until now its maybe been only a few threads ~4-24 on multi-core, multi-CPU workstation. Now we enter the land of the GPU, where anything less than thousands of threads is considered bad.*

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