Video search engine
Encyclopedia
A video search engine is a web-based search engine
which crawl
s the web for video
content. Some video search engines parse externally hosted content while others allow content to be uploaded and hosted on their own servers. Some engines also allow users to search by video format type and by length of the clip. Search results are usually accompanied by a thumbnail view of the video.
. The keywords for each search can be found in the title of the media, any text attached to the media and content linked web pages, also defined by authors and users of video hosted resources.
Some video search is performed using human powered search, others create technological systems that work automatically to detect what is in the video and match the searchers needs. Many efforts to improve video search including both human powered search as well as writing algorithm that recognize what's inside the video have meant complete redevelopment of search efforts.
It is generally acknowledged that speech to text is possible, though recently Thomas Wilde, the new CEO of Everyzing, acknowledged that Everyzing works 70% of the time when there is music, ambient noise or more than one person speaking. If newscast style speaking (one person, speaking clearly, no ambient noise) is available, that can rise to 93%. (From the Web Video Summit, San Jose, CA, June 27, 2007).
Around 40 phonemes exist in every language with about 400 in all spoken languages. Rather than applying a text search algorithm after speech-to-text processing is completed, some engines use a phonetic search algorithm to find results within the spoken word. Others work by literally listening to the entire podcast and creating a text transcription using a sophisticated speech-to-text process. Once the text file is created, the website lets you search the file for any number of search words and phrases.
It is generally acknowledged that visual search into video does not work well and that no company is using it publicly. Researchers at UC San Diego and Carnegie Mellon University have been working on the visual search problem for more than 15 years, and admitted at a "Future of Search" conference at UC Berkeley in the Spring of 2007 that it was years away from being viable even in simple search.
Search engine
A search engine is an information retrieval system designed to help find information stored on a computer system. The search results are usually presented in a list and are commonly called hits. Search engines help to minimize the time required to find information and the amount of information...
which crawl
Web crawler
A Web crawler is a computer program that browses the World Wide Web in a methodical, automated manner or in an orderly fashion. Other terms for Web crawlers are ants, automatic indexers, bots, Web spiders, Web robots, or—especially in the FOAF community—Web scutters.This process is called Web...
s the web for video
Video
Video is the technology of electronically capturing, recording, processing, storing, transmitting, and reconstructing a sequence of still images representing scenes in motion.- History :...
content. Some video search engines parse externally hosted content while others allow content to be uploaded and hosted on their own servers. Some engines also allow users to search by video format type and by length of the clip. Search results are usually accompanied by a thumbnail view of the video.
Design and algorithms
Video search has evolved slowly through several basic search formats which exist today and all use keywordsKeywords
Keywords are the words that are used to reveal the internal structure of an author's reasoning. While they are used primarily for rhetoric, they are also used in a strictly grammatical sense for structural composition, reasoning, and comprehension...
. The keywords for each search can be found in the title of the media, any text attached to the media and content linked web pages, also defined by authors and users of video hosted resources.
Some video search is performed using human powered search, others create technological systems that work automatically to detect what is in the video and match the searchers needs. Many efforts to improve video search including both human powered search as well as writing algorithm that recognize what's inside the video have meant complete redevelopment of search efforts.
It is generally acknowledged that speech to text is possible, though recently Thomas Wilde, the new CEO of Everyzing, acknowledged that Everyzing works 70% of the time when there is music, ambient noise or more than one person speaking. If newscast style speaking (one person, speaking clearly, no ambient noise) is available, that can rise to 93%. (From the Web Video Summit, San Jose, CA, June 27, 2007).
Around 40 phonemes exist in every language with about 400 in all spoken languages. Rather than applying a text search algorithm after speech-to-text processing is completed, some engines use a phonetic search algorithm to find results within the spoken word. Others work by literally listening to the entire podcast and creating a text transcription using a sophisticated speech-to-text process. Once the text file is created, the website lets you search the file for any number of search words and phrases.
It is generally acknowledged that visual search into video does not work well and that no company is using it publicly. Researchers at UC San Diego and Carnegie Mellon University have been working on the visual search problem for more than 15 years, and admitted at a "Future of Search" conference at UC Berkeley in the Spring of 2007 that it was years away from being viable even in simple search.
Agnostic search
Search that is not affected by the hosting of video, where results are agnostic no matter where the video is located:- AltaVistaAltaVistaAltaVista is a web search engine owned by Yahoo!. AltaVista was once one of the most popular search engines but its popularity declined with the rise of Google...
Video Search had one of the first video search engines with easy accessible use. Is found on a direct link called "Video" off the main page above the text block.[Since 2 February 2009 this feature has not been available from Altavista.com] - blinkxBlinkxBlinkx is an Internet search engine for video and audio content, headquartered in San Francisco, California and the UK that allows searching and classification of audio files, video clips and streaming media such as Internet television and video on demand...
was launched in 2004 and uses speech recognition and visual analysis to process spidered video rather than rely on metadata alone. blinkx claims to have the largest archive of video on the web and puts its collection at around 26,000,000 hours of content. - CastTVCastTVCastTV is an Internet video search and aggregation company based in San Francisco, California. It was founded in 2006 by Edwin Ong and Alex Vikati...
is a Web-wide video search engine that was founded in 2006 and funded by Draper Fisher JurvetsonDraper Fisher JurvetsonDraper Fisher Jurvetson is a venture capital firm based in Menlo Park, California with affiliate offices in more than 30 cities around the world and over $7 billion in capital commitments....
, Ron ConwayRon ConwayRon Conway is an American angel investor, often described as one of the "super angels". Conway is recognized as a strong networker and is based in Silicon Valley.-Early career:...
, and Marc AndreessenMarc AndreessenMarc Andreessen is an American entrepreneur, investor, software engineer, and multi-millionaire best known as co-author of Mosaic, the first widely-used web browser, and co-founder of Netscape Communications Corporation. He founded and later sold the software company Opsware to Hewlett-Packard...
. - Clipta is a deep crawling video search engine that indexes millions of videos from across the Internet. Clipta was founded and launched in 2008.
- MunaxMunaxMunax is a Swedish company which develops large hyper-parallel execution search engine systems. Founded in March 2007, its headquarters are in Stockholm. The company produces Munax XE, an all-content search engine that allows users to preview audio and video files with the option to transcode...
released their first version all-content search engine in 2005 and powers both nation-wide and worldwide search engines with video search. - PicsearchPicsearchPicsearch is a Swedish company which develops and provides image search services for large websites. The image search services developed and provided by Picsearch power several major Internet companies, such as Lycos. Other Picsearch customers include regional search portals in Germany, Turkey and...
Video Search has been licensed to search portals since 2006. Picsearch is a search technology provider who powers image, video and audio search for over 100 major search engines around the world. - ScienceStageScienceStageScienceStage is a global, science-oriented multimedia portal that specializes in online video streaming, which is used to support communication between scientists, scholars, researchers in industry, and professionals. It is also used by academics and students as a virtual educational tool...
is an integrated universal search engine for science-oriented video (lectures, conferences, documentaries, webinars, tutorials, demonstrations, grand rounds, etc.). All videos are also semantically matched to millions of research documents from open-access databases. - TruveoTruveoTruveo is a search engine for Web video, based in San Francisco and operated by AOL. Truveo was founded in 2004 by Timothy Tuttle and Adam Beguelin. Truveo launched its first commercial video search service in September 2005. Truveo was acquired by AOL in January 2006...
is a Web-wide video search engine that was founded in 2004 and launched in September 2005. Truveo claims to index over 650 million videos from thousands of sources across the Web, and uses speech recognition and visual analysis in its search technology. - Vedeo.tv Spanish site, but allows search in English and shows results from many video sites, including local news websites.
- VideoSurf uses computer vision techniques to enhance its search results, and has mobile applications that query based on video captured with the phone camera.
- yovistoYovistoYovisto is an academic video search engine specialized in academic content.-Overview:Yovisto's search index is based on the combination of automated content based video analysis with user generated collaborative annotation...
is an academic video search engine for lecture recordings and scientific conference talks based on speech processing, OCROptical character recognitionOptical character recognition, usually abbreviated to OCR, is the mechanical or electronic translation of scanned images of handwritten, typewritten or printed text into machine-encoded text. It is widely used to convert books and documents into electronic files, to computerize a record-keeping...
, and user annotation.
Non-agnostic search
Search results are modified, or suspect, due to the large hosted video being given preferential treatment in search results:- AOLAOLAOL Inc. is an American global Internet services and media company. AOL is headquartered at 770 Broadway in New York. Founded in 1983 as Control Video Corporation, it has franchised its services to companies in several nations around the world or set up international versions of its services...
Video offers a leading video search engine that can be used to find video located on popular video destinations across the web. In December 2005, AOL acquired TruveoTruveoTruveo is a search engine for Web video, based in San Francisco and operated by AOL. Truveo was founded in 2004 by Timothy Tuttle and Adam Beguelin. Truveo launched its first commercial video search service in September 2005. Truveo was acquired by AOL in January 2006...
Video Search. - Google Videos is a popular video search engine which used to permit its visitors to upload videos. It searches YouTube and many other video hosting sites.
- Yahoo!Yahoo!Yahoo! Inc. is an American multinational internet corporation headquartered in Sunnyvale, California, United States. The company is perhaps best known for its web portal, search engine , Yahoo! Directory, Yahoo! Mail, Yahoo! News, Yahoo! Groups, Yahoo! Answers, advertising, online mapping ,...
Video Search Yahoo!'s search engine examines video files on the internet using its Media RSSMedia RSSMedia RSS is an RSS extension used for syndicating multimedia files in RSS feeds. It was designed in 2004 by Yahoo! and the Media RSS community, and adds several enhancements to RSS enclosures...
standard. Is found on a direct link called "Video" off the main page above the text block.