Glencoe Introduction to Multimedia Chapter 9 Video 1 Chapter Video 9 Section 9.1 Video in Multimedia Section 9.2 Work with Video Contents.

Glencoe Introduction to Multimedia

Chapter 9 Video

1

Chapter Video9

Section 9.1 Video in Multimedia

Section 9.2 Work with Video

Contents


Chapter 9 Video

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Section 9.1 Video in Multimedia

• Video plays many roles in multimedia.

• Using video effectively in multimedia requires and understanding of its technology, including video quality, file size, and file format.


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Use Video in MultimediaFind Video on the Internet

Ethical principles apply to downloading, copying, and sharing copyrighted video.

Also, you must provide a credit for any video you did not create yourself.

Some sources of video available on the Internet are:

Online music stores YouTube

Search Engines Hulu


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Record Your Own VideoYou can also create your own video.

To create your own video, follow these steps:

1. Write a script.

2. Create a storyboard.

3. Use a video camera to create clips.

4. Digitize video, if necessary.

5. Save the files on a computer.

6. Use video editing software to edit video and audio into a single presentation.


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Use Video AppropriatelyYou must decide how to best use video to help meet your overall goals.

To make video accessible to people with visual impairments, provide auditory descriptions for visual information.


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Use Video in Multimedia

What are some ways to find video on the Internet?

Some ways to find video on the Internet include online music stores, YouTube, search engines, and Hulu.


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Types of Video in Multimedia

The role of the video will help determine the type of the video you should include.

Types Details

Clip

Simulation

Broadcast

Segment or short video

Explore scenarios impossible in real life

Real-time or delayed transmission


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Types of Video in Multimedia

What is a vlog?

A vlog, or video blog, mainly publishes video clips.


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Video TechnologyVideo quality is determined by the resolution, capturing, canvas size, and color depth.

DetailsFactor

High frame rate = high quality = large file size

Resolution

Capturing

Canvas size

Digital or analog

Enlarging beyond intended size will cause distortion

Color depth Higher color depth = more lifelike appearance


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Streaming Video

Streaming video gives the viewer a sense of a faster download time because the entire file does not have to be downloaded to begin playing.

A certain amount of streamed data is buffered by the client’s computer before playback begins.

Non-Streaming Video• Sometimes video must be downloaded first and

played back from local storage media.


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Video FileFormats

A video file’s format determines which program can open it, how much space it needs on a disk, and how fast it can travels over the Internet.

A video file’s format determines which program can open it, how much space it needs on a disk, and how fast it can travels over the Internet.


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File Size

Video files can become large very quickly, so identify your audience and delivery method before preparing video for a multimedia project. Ask these questions:

• Will you be streaming across the Internet?

Consider sacrificing a little quality to make the size smaller.

• Will the file be incorproated into a self-running CD or DVD?

If so, file size is not as important.


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Video Technology

What is the role of buffering in streaming video?

Buffering helps the video play smoothly if the transfer of data from the server fluctuates.


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Section 9.2 Edit Video

• In order to use video in your multimedia project, you must have the proper hardware and software, and know how to use it correctly.


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Video HardwareThe devices for recording and digitizing video include cameras, production equipment, capture cards, and tuner cards.

Video might be captured using any of three different types of cameras.

• Professional: record electronically with higher quality and control than consumer models.

• Camcorders: analog or digital; quality varies.• Webcam: low-end digital camera that

continuously broadcasts real-time video.


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Video Hardware

Depending on how complex your production is, you might also need the following in addition to a camera:

• Tapes, camera lenses, tripods, lights, microphones, power sources, batteries, and a green screen.

A video capture card converts analog video to digital format.

A video tuner cards lets a computer receive cable, aerial, or satellite signals.


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Video Hardware

Identify scenarios for when you would use professional video cameras, camcorders, and Webcams.

A professional video camera might be used when working in a studio, a camcorder might be used for capturing recorded clips while you are outside a studio, and a Webcam may be used for a live feed from a particular place.


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Video SoftwareNumerous applications are available for viewing video.


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Video Editing SoftwareYou can use specialized software to edit digital video that has been uploaded from a video camera or legally downloaded from the Internet, or analog video that has been digitized.

Some of the modifications you can make to your footage include:

Change size or frame rate

Add narration Modify color and contrast

Integrate still photographs

Edit and synch audio clips


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Video Software

What is footage?

Footage is the raw scenes from a video camera, prior to editing.


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Chapter Summary

• Video enhances some of the most common applications of multimedia, such as simulations, clips, and broadcasts.

• There are a number of sources for video on the Internet, such as online music stores and YouTube.

• Most video found on the Internet is protected by copyright laws.

• A video’s quality is dependent on its resolution and frame rate.


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Chapter Summary• Streaming video allows you to view a multimedia

file without having to store it on your computer’s hard drive.

• Equipment needed for working with video includes cameras, production equipment, capture cards, and tuner cards.

• There are different types of cameras to choose from to meet different needs.

• Video software can be broken down into programs for viewing video and programs for editing video, but their features may overlap.

Glencoe Introduction to Multimedia Chapter 9 Video 1 Chapter Video 9 Section 9.1 Video in Multimedia Section 9.2 Work with Video Contents.

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