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Lecture recording

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Lecture recording refers to the process of digitally capturing and archiving the content of a lecture, conference, or seminar.[1] It consists of hardware and software components that work in synergy to record audio and visual components of the lecture.

Contents


Hardware

Hardware is used to capture the lecturer's voice along with the video of the lecturer. Sometimes, the lecturer may use visual aids to support their speech, such as slide shows, which are presented to the public with some kind of projector; in this case such slide shows can also be recorded. Once captured, the data is then either stored directly on the capture hardware or sent to a server over a LAN or the Internet. After some processing to adapt the video formats to the desired distribution mechanism, codecs, etc., viewers are then able to remotely access the recording, either in real time or ex post facto.
The recording of a lecture or presentation may use any combination of the following tools:

Software

Software is used both on the capture hardware, the viewer's computer, and the production server. Software ranges from simple web browsers and video players to stand-alone software programs made specifically for viewing lectures.[2][3] The viewer's as well as the presenter's software must be compatible with the software on the server which receives the content from the capture hardware, produces it, and sends it to the viewer's computer on-demand.[4]

Modern lecture recording software supports advanced features such as indexing through OCR, instant search, real-time video editing and annotation, along with other advanced features.[5]

Uses

Pros

Provides:[8]

Cons

Lecture Capture Solutions

Below there is a non-comprehensive list of entities (institutions, non-profit organizations, vendors, companies...) providing some kind of lecture capture solution.

Accordent Classroom Recording

Accordent Solutions offers users a unique way to record everyday classroom event such as lectures, presentations, and class reviews with their classroom capture technology. This product offers the ability to record the event, upload to the internet, and provides an easy to use gateway to access any recordings posted by the educator.[13] Accordent is used by 425 universities and growing.[13] Some of these universities include the University of Tennessee, the University of Alabama and Brown University.[13] This classroom technology is helping educators not only provide their students with additional classroom lectures, but also allows them to show on demand guest speaker presentations, provide distance and online courses, and helps provide education to those students that can not attend class.[13]

The Capture Station

Press the button.jpg|thumb The Accordent Capture Station helps educators to capture their desired classroom event automatically, the user just has to press a button and the Capture Station handles the rest.[14] The Capture Station records, codes, edits and posts the recording automatically to the website application provided by Accordent.[14] All the user has to do is plug the Station into any VGA enabled device the user wants to capture on and the Station takes care of the rest when the "capture" button is pressed.[15] Accordent offers the Capture Station in two forms, a stationary setup, ideal for everyday recording, and a mobile version, which offers the ability to record not only in a classroom, but anywhere.[15]

Accordent Media Management System

With the Accordent Media Management System users can view a catalog of all captured events, search intuitively through the catalog, and protects all of the stored media with a verified user security system.[16] With this system, professors will have an easy place to view what they have posted online for their students and they can be sure that only the correct people are watching with the unique login information each student has. Students, on the other hand, have a place to easily searched for captured classroom events and can stream the videos directly from the site.[16]

EchoSystems

Built-in automation and integration capabilities make EchoSystem easily adjustable for any type of environment, from one single class room to an entire school campus. EchoSystem allows instructors to record their lectures from anywhere. Professors can lecture from classrooms, offices, or their own homes. EchoSystems requires that special software be installed on each computer. EchoSystems allows users to capture lectures through any camera, microphone, or sympodium.[17]

EchoSystem 4.0

The latest version of EchoSystem is 4.0. This version of EchoSystems allows users to view lecture from any computer as well as from an iPhone or iPad. All lectures can be recorded in HD with high quality audio. A new feature called lecture collaboration allows users to take notes on the lectures, as well as join discussions with classmates. Lecture collaboration creates a collaborative online experience for all of the users. Students can use this tool to ask the professor any questions they might have about the lecture.[17]

The EchoCenter is where users login to access the material. From the center each lecture is shown in a playlist organized by the date a lecture was uploaded. This center allows professors to follow class discussions and track all of their lecutres. EchoSystems enable a central IT department to support a single backend server infrastructure to cover the entire campus. This allows separate departments within an organization to decide if and how to implement this system.[17]

Echo360 is also able to combine with other software. Echo360 and CaptionSync were combined to create a seamless software used by many universities. This version is able to view handwriting inputted by a tablet computer or other touch device and posts the writing under each lecture. This allows Echo360 to be used for math and science classes where there are calculations.[18]

Opencast Matterhorn

The Opencast Community is a collaboration of individuals, higher education institutions and organizations working together to explore, develop, define and document best practices and technologies for management of audiovisual content in academia.[19]

The Opencast community also supports community-driven projects to solve common issues in management of academic audiovisual content as identified by the community.[19] The most prominent of such projects is Matterhorn: a free, open-source platform to support the management of educational audio and video content. Institutions will use Matterhorn to produce lecture recordings, manage existing video, serve designated distribution channels, and provide user interfaces to engage students with educational videos.[20]

Panopto

Panopto is a software company that provides lecture recording, screencasting, video streaming, and video content management software, which is often used in E-learning environments.[21]

As of 2012, Panopto offers two units of software Focus and Unison. Focus is software that records and live-streams presentations, lectures, demos, and so forth, and then stores them in the Panopto video content management system.[22] Unison is software that imports existing videos into the Panopto video CMS.[23] Both Focus and Unison come with the web-based content management system, a web-based media editor, the ability to search within videos, and developer APIs for integrating Panopto with existing content- and learning-management systems.[22][23]

Tegrity

Tegrity lecture capture Technology is a division of McGraw Hill (Link to McGraw Hill) and is an award winning lecture capture option. Tegrity offers a cloud-based system that deploys quickly and is easily scalable. Tegrity establishes a real time connection between the user and the course they are taking. Class data is always kept up to date, and there is no need to manually enter the users for the system. There is a single sign on for users, as well as a customizable logo, color scheme, and images.[17][24]

Tegrity has many applications for students. Tegrity does not require software to be downloaded. The student only needs to have access to the internet. Tegrity allows for students to bookmark content, collaborate with other students as well as instructors, as well as take notes for the lectures. Tegrity can be views from anywhere with an internet connection, anytime, on almost any device which includes many mobile devices. Tegrity allows users to search for any keyword presented in the class. Tegrity also allows users to speed up or slow down the lectures while keeping the tone of the presenter s voice natural. Tegrity enables users to resume their lectures from the last position that they stopped at.[17][24]

Galicaster

The Galicaster Project is an open initiative, supported by Teltek Video Research (a start-up company born at the University of Vigo, focused on providing open IT-media solutions for Academia[25]) to provide a flexible, state-of-the-art solution for recording educational multimedia contents like lectures and conferences.[26][27] This solution basically consists on a Linux-based application[28] and a set of hardware recommendations[29] for the computers to be running such application. Some important features Galicaster provides are:[26]

  • Live visual feedback of what is being recorded, including a vumeter for audio monitoring.[27]
  • Remote monitoring of the recording, via VNC.
  • Ability to browse, play, delete or download finished recordings (also in a Opencast Matterhorn-compatible format).
  • Recording may be triggered automatically or manually.
  • Basic recording controls (start, pause, stop )
  • Compatibility with Opencast Matterhorn schedule and ingestion services.[27]
  • Touchscreen interface.[27]

Galicaster supports two operation modes:[26]

  • Galicaster Class: Works as an automated recording system for classrooms and unoperated conference halls. Recordings can be scheduled and they will start and stop automatically at the configured times. Lecturers/teachers don't need to interact with the recording if they don't want to, however they have access to a restricted interface that allows them to pause, resume and stop the recordings, even those started automatically. Media browsing and reviewing capabilities aren't enabled in this mode, so that the interface remains as simple as possible.[30]
  • Galicaster Mobile: All the Galicaster features are enabled, so that the user can manually start/pause/stop recordings, edit their metadata, review recorded media, etc. This operation mode is intented for video operators that need a simple yet versatile mobile unit to record in unequipped halls or classrooms.[31]

Galicaster is open source and freely available at its official download page.

Media Transformation

One company that produces products that help enhance lecture capture technology is Cisco.Cisco's main goals with this type of Media Transformation is reduce risks involved in the distribution of media, while getting a full return on the investment consumers put into the Cisco technology.[32] Ciscos media transformation division is all centered around the idea of wide distribution of video technology to enhance learning and business around the world. With services that help connect people across the globe using real time video capturing and recording, it opens up so many new possibilities to what future business and educational resources may become.[33] All of the processes discussed in this article are a prime example of what will be to come in the world of advancing technologies. One day meeting and classes may all be taken from home while we view lecutures and presentations all through video capturing and realtime streaming.

Presentations2Go

In 2010, Learning Valley a startup company born at Wageningen University in the Netherlands did research together with University of applied sciences Utrecht into 'Live Tagging'[34] applications in combination with rich media weblectures. This enables students to make online tags (notes) on mobile devices such as iPhones, iPads or netbooks, etc. during a lecture. Using clever, innovative technology, the positions of these tags are accurately linked to the teacher s presentation slides. When the lecture is over, the notes can be seen on the time-line for the web lecture or webcast recorded using Presentations 2Go. This enhances and enriches the content.

With the new release of Presentations2Go[35], teachers and students can now also add notes retrospectively when viewing a web lecture. Presentations 2Go makes a distinction between moderators (teachers) and audience (students). Moderators have extra possibilities. They can introduce command tags which can be responded to. In this case, the video recording pauses and an optional link automatically opens in a separate window. The assignment tags that are handed in are only visible to group moderators. It s also possible to enable students to react to each other s notes. When watching the web lecture again, notes can be filtered using keywords and downloaded in HTML format. This means they can be utilised usefully within existing learning environments or locally.

References






Source: Wikipedia | The above article is available under the GNU FDL. | Edit this article



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