LATEST UPDATE OF QUESTIONS AND ANSWERS.
Reasons for using video; additional requirements
Most engaging of multimedia venues.
Additional requirements - Video requires a codec to be played, video has additional
conversion requirements.
Analog recording
helical scanning
Video and audio signals are written to tape by a spinning recording head that changes
the local magnetic properties of the tape's surface in a series of long diagonal stripes.
Because the head is canted or tilted at a slight angle compared with the path of the
tape, it follows a helical path
Issues with different display standards
Other display issues/techniques: overscan, safe title areas
Overscan - image or video is cut off by the screen's physical frame
underscan - image or video is not big enough for the screen so is surrounded by a black
boarder
Interlaced vs. progressive scan; deinterlacing
Interlaced - process of building a single frame from two fields that helps to prevent
flicker on CRT screens
Progressive - draw the lines of an entire frame in a single pass, without interlacing them
and without flicker
de-interlacing -
Codecs - purpose; compression
algorithm used to compress a video for delivery and then decode it in real time for fast
playback
Storyboarding
, structuring the production with drawings to show elements you plan to incorporate so
everyone is on the same page
Use of text
-font should be plain, sans serif, and bold enough to be easily read
-make sure text color contrasts well with the background
-use a drop shadow to separate text from background
-do not kern letters too tightly
Stages of a Multimedia Project
Planning and costing
Designing and producing
Testing
Delivering
Role of a project manager
responsible for the overall development and implementation of a project as well as for
day-to-day operations
Task Planning steps - parts in each
- Designing the instructional framework.
- Holding creative idea sessions.
- Determining the delivery platform and authoring
platform.
- Assembling the team.
- Building a prototype, producing audio and video,
testing the functionality, and delivering the final
product.
◾ Additive vs. subtractive
Additive - color created by combining colored light sources in three primary colors: red,
green, and blue
Subtractive - color created by combining colored media such as paints or ink that
absorb some parts of the color spectrum of light and reflect the others back to the eye
◾ Scheduling importance, software (CPM, Gantt, PERT)