UNIVERSITY EXAMINATIONS: 2018/2019
EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE
IN APPLIED COMPUTING
BAC1107 DIGITAL PHOTOGRAPHY AND VIDEO EDITING
FULL TIME/PART TIME
DATE: AUGUST, 2019 TIME: 2 HOURS
INSTRUCTIONS: Answer Question One AND any other TWO questions.
QUESTION ONE
a) What are the three stages of the production process? (3 Marks)
b) How many lines of horizontal resolution are standard in NTSC? (2 Marks)
c) Using the runlength coding encode the following binary data (4 Marks)
100000000100001000000000000111000001
d) Distinguish between cinematography and videography (4 Marks)
e) State the challenges experienced in non-linear video editing (5 Marks)
f) What is the rule of thirds as use in photography (2 Marks)
g) Distinguish between
i) backlighting and white balancing (2 Marks)
ii) optical and digital zoom (2 Marks)
iii) luminance and exposure (2 Marks)
iv) wide angle and telephoto lens (2 Marks)
v) concave and convex lens (2 Marks)
QUESTION TWO
a) Describe the following standards (8 Marks)
i) JPEG
ii) MPEG
b) Using Huffman coding with Following frequencies
Encode BCFGADE (8 Marks)
c) What is the importance of transitions in video editing (4 Marks)
QUESTION THREE
a) A video file takes 4 hours download on a network with a bandwidth of 100KBps. If
the video is in true colour and has a frame rate of 30fps. Calculate the resolution if
the aspect rate is 16:9 (6 Marks)
b) Describe (8 Marks)
i) HDMI
ii) HDTV
c) What are the benefits enjoyed so far for the migration to digital TV in Kenya
(6 Marks)
QUESTION FOUR
a) Using the Lempev Ziv coding algorithm, encode the following
AABCDBCBFFBADDFFDAA (5 Marks)
b) Explain (4 Marks)
i) color temperature
ii) white balancing
c) An audio file has the following (16bit stereo, duration of 180 seconds and 96Khz
(3 Marks)
d) What roles do the following play in video production (6 Marks)
i) costume designer
ii) director
e) What is the sampling frequency for a sound signal that has a frequency of 44.1khz
(2 Marks)
QUESTION FIVE
a) A website is being developed for Write Rhymes, a company that writes poems
and rhymes. A video clip is placed on the home page. It contains a child introducing
the company by reciting a rhyme. The video will be played using streaming.
i) What is meant by the term “streaming”? (2 Marks)
ii) Describe one reason why it was decided to stream the video clip. (2 Marks)
b) A choir use a recording studio to produce their own CD. The vocals for each track are
captured using digitised sound. Explain the term “digitised sound”. (2 Marks)
c) Carolyn uses photo editing software that allows her to store a photograph using JPEG
or GIF file format. Describe one difference between these two file formats.
(4 Marks)
d) State why it would be an advantage to have hardware codecs built in to the video
camera rather than loading in the software. (4 Marks)
a) David is a car racing fan. He records short video clips of races at a local circuit and
transfers the clips to his computer for editing. David uses video editing software to
join the video clips taken into one continuous video clip. When he joins the clips
together, David uses the timeline and transition features.
i) Explain why the timeline feature will be useful for David when he is producing the
single continuous clip. (3 Marks)
ii) Name one transition David could use. (3 Marks)
