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In November 2016, support for HDR video was added which can be encoded with hybrid log–gamma (HLG) or perceptual quantizer (PQ). [43] HDR video can be encoded with the Rec. 2020 color space. [44] YouTube videos are available in a range of quality levels. Viewers only indirectly influence the video quality.
Online video platforms allow users to upload, share videos or live stream their own videos to the Internet. These can either be for the general public to watch, or particular users on a shared network. The most popular video hosting website is YouTube, 2 billion active until October 2020 and the most extensive catalog of online videos. [1]
The highlights—the brightest parts of an image—can be brighter, more colorful, and more detailed. [2] The larger capacity for brightness can be used to increase the brightness of small areas without increasing the overall image's brightness, resulting in, for example, bright reflections from shiny objects, bright stars in a dark night scene, and bright and colorful light-emissive objects ...
[7] [8] ITU specifies the use of PQ or HLG as transfer functions for HDR-TV. [7] PQ is the basis of HDR video formats (such as Dolby Vision, [2] [9] HDR10 [10] and HDR10+ [11]) and is also used for HDR still picture formats. [12] [13] PQ is not backward compatible with the BT.1886 EOTF (i.e. the gamma curve of SDR), while HLG is compatible.
The ITU announced Rec. 2100 which defines two HDR transfer functions which are HLG and PQ. [5] [30] Digital UK published their 2017 specification for Freeview Play which includes support for HDR using HLG. [16] The Digital Video Broadcasting (DVB) Steering Board approved UHD-1 Phase 2 with an HDR solution that supports HLG and PQ.
File – To create a link to the video's File Description Page, use [[:File:Time Lapse of New York City.ogv]]. To make the text of a link to the video's File Description Page appear as some text other than the video's filename, use [[:File:Time Lapse of New York City.ogv|some text you prefer]]. Media – To create a link that downloads the video,
SDR video with a conventional gamma curve and a bit depth of 8-bits per sample has a dynamic range of about 6 stops, assuming a luminance quantisation threshold of 5% is used. [10] A threshold of 5% is used in the paper (instead of the standard 2% threshold) to allow for the typical display being dimmer than ideal.
Online video platforms can use a software as a service (SaaS) business model, a do it yourself (DIY) model or user-generated content (UGC) model. The OVP comes with an end-to-end tool set to upload, encode, manage, playback, style, deliver, distribute, download, publish and measure quality of service or audience engagement quality of experience of online video content for both video on demand ...