UNIT 10
MULTIMEDIA APPLICATION
Interactive television (iTV or interactive TV) is the integration of traditional television technology and data services.
It is a two-way cable system that allows users to interact with it via commands and feedback information.
A set-top box is an integral part of an interactive television system.
It can be used by the viewer to select the shows that they want to watch, view show schedules and give advanced options like ordering products shown in ads, as well as accessing email and Internet.
Interactive TV allows various forms of interaction, such as:
- Interacting with the TV set
- Interacting with the program content
- Interacting with TV-related content
- Interactive TV services
- Closed-circuit interactive television
- Video on demand (VoD) is a system that allows users to select and watch video content of their choice on their TVs or computers.
- It is one of the dynamic features offered by Internet Protocol TV.
- It provides users with a menu of available videos from which to choose and is transmitted via Real-Time Streaming Protocol.
- It allows viewers to request immediate access to video content on their PCs or TVs. It provides a wide selection of video programming including sports, entertainment, educational programs and feature films.
- It is provided as a unicast transmission and is commonly used for video conferencing.
- It is not widely used due to the bandwidth limitations of current networks.
A video conference is a live, visual connection between two or more people residing in separate locations for the purpose of communication. It provides transmission of static images and text between two locations. It also provides transmission of full-motion video images and high-quality audio between multiple locations.
Required components of video conferencing systems
The components of a video conferencing system include:
- A network for data transfer which uses similar technology as voice over Internet protocol (VoIP).
- Video cameras or webcams that provide video input.
- Microphones either located on the individual or within the device that provide audio input.
- A computer can broadcast video output using various output devices.
- Headphones or speakers can be used for audio output.
- Hardware or software based coding and decoding technology, called codec, which can compress analog audio and video (AV) data into digital packets on the distributing end and then decompress the data at the endpoint.
- Acoustic echo cancellation (AEC) software which reduces audio delays and supports real time.
1. In World Wide Web,
2. Courseware
3. Computer games
4. For computer based training courses
5. Reference books such as encyclopedia.
1. It help to present information to shareholders, superiors and coworkers.
2. For providing employee training, advertising and selling products all over the world via virtually unlimited web-based technologies.
Digital library is an online database of digital objects that can include text, still images, audio, video, or other digital media formats.
Digital libraries can vary immensely in size and scope, and can be maintained by individuals or organizations. The digital content may be stored locally, or accessed remotely via computer networks. These information retrieval systems are able to exchange information with each other .
In a nutshell, an editor writes, edits and commissions stories. The day-to-day responsibilities vary depending on the medium (e.g., magazine, newspaper, website, book, social media) and workplace, but, in general, editors spend their days—and nights, when on deadline or closing an issue—pitching ideas; reporting; overseeing social media; curating content; supporting special projects; cultivating, assigning and managing a stable of freelancers; creating production schedules; and copy editing.
Editor needs good writing and editing skills. It’s imperative to understand how important attention to detail is.
References:
- Multimedia : Computing, Communications & Applications by Ralf Steinmetz and Klara Nahrstedt, Pearson Ed.
2. Multimedia Systems Design by Prabhat K. Andleigh & Kiran Thakrar, PHI.
3. Principles of Multimedia by Parekh, TMH.
