IT152_Lecture_11_Video_2013a

Question 1

Inclusion of video on Web pages requires…?

Answer 1

broader bandwidth.

Question 2

Video can be exported in a wide range of Web formats using…?

Answer 2

a number of different compression schemes designed to make the file small for easier online delivery.

Question 3

Video is effective because …?

Answer 3

multiple senses involved; enhances learning

Question 4

Video often used in education because it accommodates…?

Answer 4

different learning styles.

Question 5

Web sites designed to entertain are more likely to include…?

Answer 5

video clips that are other types of sites.

Question 6

Analogue video is generally…?`

Answer 6

linear; it has a beginning, a middle, and an end and is recorded as a signal

Question 7

Because videotape is linear, you must either…?

Answer 7

fast-forward or rewind to get to the video segment you are interested in viewing or digitizing

Question 8

Before analogue video can be used in multimedia Title or Web site, it must be…?

Answer 8

converted to a digital format.

Question 9

Video capture cards are used to convert analogue video to…?

Answer 9

a digital format.

Question 10

VHS is the most…?

Answer 10

common video format.

Question 11

S-VHS is a higher quality format than VHS, but…?

Answer 11

slightly lower quality than Hi-8.

Question 12

Hi-8 is the highest quality analog video format found in…?

Answer 12

the consumer market.

Question 13

Betacam SP is a high-quality, analogue video format used in…?

Answer 13

processional video editing.

Question 14

Digital video is video that is already in…?

Answer 14

digital format.

Question 15

DV standard: International standard created by a consortium of…?

Answer 15

10 companies for storing digital video.

Question 16

DV cameras use a tape that stores the…?

Answer 16

video and sound in a digital format.

Question 17

MiniDV is replacing…?

Answer 17

Betacam for prof. digital recording.

Question 18

The DV specification defines both the…?

Answer 18

codec and the tape format.

Question 19

D1…?

Answer 19

Not suitable for video and is for high-end broadcast projects and uses 19mm tape and can cost up to $900,000 for an editing suite

Question 20

D2, D3…?

Answer 20

Format used for professional video editors and television studios

Question 21

DV…?

Answer 21

Sony’s digital video recording format that has been set as the standard by the major producers of digital video camera technologies

Question 22

The DV format uses “L-size” cassettes (prof.), while MiniDV cassettes are called…?

Answer 22

“S-size”

Question 23

MiniDV “S” cassettes are 65 x 48 x 12 mm and hold either 60 or 90 minutes of video (11 GB) and has a constant data rate of…?

Answer 23

3.6 Megabytes per second

Question 24

DVD (Digital Versatile Disc), also called Digital Video Disc can be used to..?

Answer 24

store digital video. Can store up to 4 hours of digital video from 4.7 GB to 17 GB

Question 25

Quality of video on DVD is clear and sharp but due to difficulties with editing the MPEG-2 data stream, they are not…?

Answer 25

widely used in professional settings.

Question 26

Digital storage on SD cards and internal flash memory means that over 50Gb of storage can be available for…?

Answer 26

recording.

Question 27

High-definition video or HD video refers to any video system of…?

Answer 27

higher resolution than standard-definition (SD) video, and most commonly involves display resolutions of 1,280×720 pixels (720p) or 1,920×1,080 pixels (1080i/1080p).

Question 28

Guidelines for Using Video on the Web…?

Answer 28

• Use video when and where it is appropriate
• Keep your audience and delivery method in mind when designing video for a Web page
• Sound and Video clips should match or complement one another
• Keep video files at an appropriate size so they can be played on standard equipment to reach a wider audience; 1 sec. of uncompressed video = 24MB
• Use high-quality video footage that lends a professional feel to Web site
• Set up your video files to go with the graphic, animation, sound elements

Question 29

Source frame rate…?

Answer 29

Speed at which the video is recorded.

Question 30

Playback frame rate…?

Answer 30

Speed at which individual frames display.

Question 31

Frames per second (fps)…?

Answer 31

• “A numeric value that specifies the number of video frames displayed in quick succession for each elapsed second of playing video.”
• 12-24fps needed to deceive the human eye otherwise appear ‘choppy’
• TV = 30 fps (NTSC rounded) or 25 fps PAL
• The greater the frame rate the better the quality and the bigger the file size. IMAX = 60fps

Question 32

Resolution for video refers to the…?

Answer 32

horizontal – how many scan lines make up the picture and is a measure of video quality

Question 33

Factors that determine the resolution of video include…?

Answer 33

• Aspect ratio: Ratio of width to height in the dimensions of a frame
• The frame size for playing video is expressed in horizontal and vertical pixel dimensions such as 800 by 600 pixels
• Bit depth: Number of bits used to describe the color of a single pixel

Question 34

The higher the resolution, the larger the…?

Answer 34

size of the file.

Question 35

In addition to frame rate and resolution, bandwidth, processor speed, memory, and monitor size are important considerations for ….?

Answer 35

Web-based video delivery.

Question 36

The 4 basic steps in production are…?

Answer 36

• Video footage is acquired,
• Record, and digitized if needed
• Import the clips into video editing program. Settings: frame size, output file type, compression format, resolution
• Delivery and display the final video

Question 37

Pre-Production…?

Answer 37

• Involves visualizing and sketching each scene on a storyboard
• Scripts serve as the story that will be told with the video camera
• A flowchart specifies where video will be included based on choices selected by the user

Question 38

Post-Production…?

Answer 38

• Process video after it is captured
• In most video editing programs, several different tracks are used to store video information
• Timecode track used to synchronize all of the components
• Society of Motion Picture and Television Engineers (SMPTE) measures video in hours, minutes, seconds, and frames
• Video on the Web can either be downloaded or streamed
• After video has been successfully recorded, digitized, and processed it is ready to be incorporated into a Web site
• If you plan to stream the video from the server, you will need to post your Web site with a Web hosting company that supports streaming

Question 39

Video Editing Software: Adobe Premiere…?

Answer 39

• Award-winning software solutions for editing and compositing video for Web
• Adobe Premiere: affordable, highly rated, non-linear, video-editing program
• Premiere based on open architecture; designed to be compatible with numerous software programs, extensions, and file formats

Question 40

Adobe After Effects…?

Answer 40

• Compositing software program full of tools that can help create special effects for Adobe Premiere projects
• Adobe After Effects can combine an unlimited number of layers from files imported from a variety of other graphics and animation programs

Question 41

Apple Quick Time Pro…?

Answer 41

• Software-based, video-editing system
• Provides a comprehensive, flexible, integrated set of media services to creators/developers working with video
• Work with a variety of different audio, video, and image formats

Question 42

iMovie…?

Answer 42

• Video-editing package
• Using familiar drag and drop, copy, cut, and paste functions, use iMovie to trim unwanted footage and to arrange video clips in any sequence