Online video platform
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An online video platform (OVP), provided by a video hosting service, enables users to upload, convert, store and play back video content on the Internet, often via a structured, large-scale system that can generate revenue. Users generally will upload video content via the hosting service's website, mobile or desktop application, or other interface (API). The type of video content uploaded might be anything from shorts to full-length TV shows and movies. The video host stores the video on its server and offers users the ability to enable different types of embed codes or links that allow others to view the video content. The website, mainly used as the video hosting website, is usually called the video sharing website.
Purpose of video hosts (for users)
- Save on bandwidth and hosting costs often eliminating costs entirely;
- Creating a common place to share and view video content;
- Making a user friendly experience, where uploading a video and streaming or embedding video does not require advanced programming knowledge. It is now commonly achieved through a web browser, and can be done by users with little programming experience.
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 and live delivery. This is usually manifested as a User Interface with log-in credentials. OVPs also include providing a custom video player or a third-party video player that can be embedded in a website. Modern online video platforms are often coupled up with embedded online video analytics providing video publishers with detailed insights into video performance: the total number of video views, impressions, and unique views; video watch time, stats on user location, visits, and behavior on the site. Video heat maps show how user engagement rate changes through the viewing process in order to measure audience interaction and to create compelling video content. OVPs are related to the over-the-top content video industry, although there are many OVP providers that are also present in broadcast markets, serving video on demand set-top boxes.
OVP product models vary in scale and feature-set, ranging from ready-made web sites that individuals can use, to white label models that can be customized by enterprise clients or media/content aggregators and integrated with their traditional broadcast workflows. The former example is YouTube. The latter example is predominantly found in FTA (Free-To-Air) or pay-TV broadcasters who seek to provide an OTT service that extends the availability of their content on desktops or multiple mobility devices.
In general, the graphical user interface accessed by users of the OVP is sold as a service. Revenue is derived from monthly subscriptions based on the number of users it is licensed to and the complexity of the workflow. Some workflows require encryption of content with DRM and this increases the cost of using the service. Videos may be transcoded from their original source format or resolution to a mezzanine format (suitable for management and mass-delivery), either on-site or using cloud computing. The latter would be where platform as a service, is provided as an additional cost.
It is feasible, but rare, for large broadcasters to develop their own proprietary OVP. However, this can require complex development and maintenance costs and diverts attention to 'building' as opposed to distributing/curating content.
OVPs often cooperate with specialized third-party service providers, using what they call an application programming interface (API). These include cloud transcoders, recommendation engines, search engines, metadata libraries and analytics providers.
Video and content delivery protocols
The vast majority of OVPs use industry-standard HTTP streaming or HTTP progressive download protocols. With HTTP streaming, the de facto standard is to use adaptive streaming where multiple files of a video are created at different bit rates, but only one of these is sent to the end-user during playback, depending on available bandwidth or device CPU constraints. This can be switched dynamically and near-seamlessly at any time during the video viewing. The main protocols for adaptive HTTP streaming include Smooth Streaming (by Microsoft), HTTP Live Streaming (HLS) (by Apple) and Flash Video (by Adobe). Flash is still in use but is declining due to the popularity of HLS and Smooth Stream in mobile devices and desktops, respectively. Each is a proprietary protocol in its own right and due to this fragmentation, there have been efforts to create one standardized protocol known as MPEG-DASH.
In the 2010s, with the increasing prevalence of technology and the Internet in everyday life, video hosting services serve as a portal to different forms of entertainment (comedy, shows, games, or music), news, documentaries and educational videos. Content may be either both user-generated, amateur clips or commercial products. The entertainment industry uses this medium to release music and videos, movies and television shows directly to the public. Since many users do not have unlimited web space, either as a paid service, or through an ISP offering, video hosting services are becoming increasingly popular, especially with the explosion in popularity of blogs, internet forums and other interactive pages. The mass market for camera phones and smartphones has increased the supply of user-generated video. Traditional methods of personal video distribution, such as making a DVD to show to friends at home, are unsuited to the low resolution and high volume of camera phone clips. In contrast, current broadband Internet connections are well suited to serving the quality of video shot on mobile phones. Most people do not own web servers, and this has created demand for user-generated video content hosting.
Free video format support
Some websites prefer use open source video formats such as Ogg or WebM. The compression formats used for open source video formats are Theora (with Ogg) and VP8 (with WebM). In particular, the Wikipedia community advocates the Ogg format and some web sites now support searching specifically for WebM videos.
On some websites, users share entire films by breaking them up into segments that are about the size of the video length limit imposed by the site (e.g. a 15-minute video length limit). An emerging practice is for users to obfuscate the titles of feature-length films that they share by providing a title that is recognizable by humans but will not match on standard search engines. It is not even in all cases obvious to the user if a provided video is a copyright infringement.
Mobile video hosting
A more recent application of the video hosting services is in the mobile web 2.0 arena, where video and other mobile content can be delivered to, and easily accessed by mobile devices. While some video-hosting services like DaCast and Ustream have developed means by which video can be watched on mobile devices, mobile-oriented web-based frontends for video hosting services that possess equal access and capability to desktop oriented web services have yet to be developed. A mobile live streaming software called Qik allows the users to upload videos from their cell phones to the internet. The videos will then be stored online and can be shared to various social networking sites like Twitter, Facebook and YouTube. Videos will be stored on the servers and can be watched from both the mobile devices and the website.
Before YouTube changed the way videos were hosted on the web, the first Internet video hosting site was shareyourworld.com. Just like the modern hosting services, it allowed users to upload clips or full videos in different file formats. It was founded in 1997 by Chase Norlin and it ran till 2001 where it closed due to budget and bandwidth problems.
Founded in October 2004, Pandora TV from South Korea is the first video sharing website in the world to attach advertisement to user-submitted video clips and to provide unlimited storage space for users to upload. 
|Wikimedia Commons has media related to Video hosting service.|
- Comparison of video hosting services
- Flash Video ("Flash")
- List of video hosting services
- Online video analytics
- Streaming media
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