Content Based Multimedia Information Retrieval Techniques With Special Reference to Educational Video Repositories

Abstract

E-lecturing has become increasingly popular over the past decade. There is an newlineexponential increase in the amount of lecture video data being posted on the internet. newlineMany universities and research institutions are recording their lectures and newlinepublishing them online for students to access independently of time and location. In newlineaddition, there are numerous Massive Open Online Courses (MOOCs) that are newlinepopular across the globe for their ability to provide online lectures in a wide variety newlineof fields. The availability of online courses and ease of access has made them a newlinepopular learning tool. Lecture Videos and MOOCs are hosted on cloud platforms to newlinemake them available to registered users. Most of these resources are for the benefit newlineof the public. The majority of lecture videos are available on popular video-sharing newlineplatforms such as YouTube, Vimeo, and Dailymotion. Due to a shortage of storage newlineservers and internet bandwidth, academic and research institutions are having newlinedifficulty maintaining video repositories. newlineIn the Indian scenario, the vast majority of lecture video repositories and MOOCs newlineare hosted on the YouTube platform and the web links are embedded in content newlinemanagement systems (CMS) and e-learning applications. Typically, these newlineapplications only search for metadata and human annotations associated with newlinespecific videos. Some applications lack search engines, and the Study Webs of newlineActive-Learning for Young Aspiring Minds (SWAYAM) platform is the best newlineexample of this. The user needs to browse the videos according to the subject on this newlineplatform. A commercial video lecture application focuses only on recording and newlineorganizing video lectures based on their subject and topics. The retrieval of videos newlinefrom repositories is the least concern and applications are neglected user concerns. newlineThe lecture videos uploaded online platform that is annotated only with a few newlinekeywords, which results in the search engine returning inaccurate results. There are newlineonly a limited number of keywords available to ac