Cisco Digital Video Recorder in Stand-Alone Mode Bedienungsanleitung PDF herunterladen (Seite 18)

5 – ViPS

Kaunas University of Technology, Lithuania

System Description

ViPS is an in-house development of the Kaunas University of Technology. The

third edition of this software was used during the TF-Media recording contest.

It has a user-friendly interface allowing teachers to record lectures on their own

using a simple webcam or external video source connected to the system via a

video capture device.

ViPS may be operated in two ways: a) by the teacher, b) by technical staff

connected to the auditorium setup. To support these two scenarios

simultaneously, two interfaces have been developed on the front end: the

broadcaster’s interface and the presenter’s interface. In case of technical assistance, the presenter and

the broadcaster instances can be initiated on separate computers. When the teacher handles the

system alone, the two interfaces can run on the same computer. The ViPS portal is developed on top

of the Drupal open source CMS. For video production, Red5 Media Server is primarily used and,

optionally, Wowza Media Server. All the Flash video synchronisation functions are done by Red5 while

Wowza is used for more reliable video streaming, although it may be replaced by Red5 once it has

developed further. The system is designed in such a way that a special container has to be prepared

for each recording where presentation slides can be uploaded in advance. Static slides can be

presented through the presenter’s interface and automatically synchronised with the video. The

presenter’s computer screen can also be broadcast as a separate high-resolution, low-frame-rate

screen capture window. While the latter results in larger files this does allow for improved

demonstration of dynamic information. During post-processing the video is transcoded to H.264

codec that is used in an HTML5 player, which is compatible with devices without Flash players, such as

iPads. The system is based on open source components, but it is not provided as a complete open

source package at the moment. The service is offered to all members of the Lithuanian Distance

Education Network (LieDM). More than three thousand recordings have been made in two years, and

the LieDM has more than 4500 registered users.

Screenshot

https://vips.liedm.lt/live/2512/tnc2012/en

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Cisco Digital Video Recorder in Stand-Alone Mode Bedienungsanleitung Seite 18