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Questions and Answers
MPEG-7 is a preferred standard for video compression due to its multimedia capabilities.
MPEG-7 is a preferred standard for video compression due to its multimedia capabilities.
False (B)
Cinepak and Sorenson are examples of lossless compression algorithms.
Cinepak and Sorenson are examples of lossless compression algorithms.
False (B)
JPEG is a compression standard used for video compression.
JPEG is a compression standard used for video compression.
False (B)
Streaming audio and video starts playback after the entire file has transferred to the user's computer.
Streaming audio and video starts playback after the entire file has transferred to the user's computer.
Nonlinear editing involves making changes to the original footage itself.
Nonlinear editing involves making changes to the original footage itself.
Lossy compression is usually used for video compression because it preserves image quality.
Lossy compression is usually used for video compression because it preserves image quality.
The PAL television standard is used in North America.
The PAL television standard is used in North America.
VHS is a digital video file format.
VHS is a digital video file format.
Digital video eliminates the need for image-degrading analog-to-digital conversion.
Digital video eliminates the need for image-degrading analog-to-digital conversion.
The term 'video' only refers to digital formats such as DVD and Quicktime.
The term 'video' only refers to digital formats such as DVD and Quicktime.
SECAM is a British broadcast television standard.
SECAM is a British broadcast television standard.
Analog video technology is still the preferred method for making and delivering video for multimedia.
Analog video technology is still the preferred method for making and delivering video for multimedia.
The Internet has made it more difficult to syndicate video files to a global audience.
The Internet has made it more difficult to syndicate video files to a global audience.
Video is not a suitable tool for delivering multimedia.
Video is not a suitable tool for delivering multimedia.
Most consumer-grade cameras have three CCDs, one for each Red, Green, and Blue color information.
Most consumer-grade cameras have three CCDs, one for each Red, Green, and Blue color information.
The Charge Coupled Device (CCD) converts the electronic signal into light.
The Charge Coupled Device (CCD) converts the electronic signal into light.
IStopMotion is a type of video compression algorithm.
IStopMotion is a type of video compression algorithm.
Codec stands for Compression/Decompression of Video.
Codec stands for Compression/Decompression of Video.
Quick Time is a type of digital video compression scheme.
Quick Time is a type of digital video compression scheme.
The output of the CCD is processed by the camera into a single channel of color information.
The output of the CCD is processed by the camera into a single channel of color information.
Splice is a type of digital camera used in professional-grade filming.
Splice is a type of digital camera used in professional-grade filming.
Digital video compression is used to increase the size of video files.
Digital video compression is used to increase the size of video files.
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Study Notes
Video Standards
- PAL (Phase Alternating Line) is a British broadcast television standard.
- NTSC (National Television Standards Committee) is a North American broadcast television standard.
- SECAM (Séquential Couleur avec Mémoire) is a French and Asian broadcast television standard.
Introduction to Video
- The term "video" refers to various types of carrier formats, including digital (DVD, Quicktime, Ogg) and analog videotape (VHS, Betamax).
- Video technology has been used in television broadcasting, home movies, scientific engineering, manufacturing, and security applications.
Using Video
- Video is an excellent tool for delivering multimedia.
- Digital video has replaced analog as the preferred method for making and delivering video.
- Digital video devices produce high-quality finished products at a lower cost than analog devices.
Video in Multimedia Projects
- Examples of video in multimedia projects include:
- Splice: Creating Recycle Robots and Keith Haring Art Projects.
- iMovie: Proper Care and Feeding of iPads.
- iTimelapse: Watercolor Painting Timelapse Video.
- iStopMotion: Apple Still Life.
- Animoto: Grace's Animoto.
- Silent Movie Director: Computer Lab Rules.
How Video Works
- Video basics: Light passes through a camera lens and is converted to an electronic signal by a Charge Coupled Device (CCD).
- Most consumer-grade cameras have a single CCD, while professional-grade cameras have three CCDs for each Red, Green, and Blue color information (RGB).
- The output of the CCD is processed by the camera into a signal containing three channels of color information and synchronization pulse (sync).
Digital Video Compression
- Digital video compression schemes or codecs are algorithms used to compress video for delivery.
- Lossless compression preserves image quality throughout the compress/decompress process.
- Lossy compression eliminates some of the data in the image, resulting in a trade-off between file size and image quality.
Compression Standards
- Common compression standards include:
- MPEG (Motion Picture Experts Group)
- JPEG (Joint Photographic Experts Group)
- Cinepak and Sorenson
- MPEG is a real-time video compression algorithm.
- MPEG-4 includes numerous multimedia capabilities and is a preferred standard.
Editing and Post-Production
- Editing involves selecting, trimming, and organizing raw footage, applying transitions, and combining picture with sound.
- No changes are made to the footage itself during editing.
Shooting and Editing Video
- Shooting and editing video involves:
- Shooting platform
- Storyboard
- Lighting
- Chroma Keys
- Composition
- Title & Text
- Nonlinear Editing (NLE)
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