CS525 S2006 Assignment

Homework #3: SMIL based multimedia presentation, VoD

Goal:

Learn to create Web-based synchronized multimedia presentation using SMIL.

Learn basic video on demand system design issues.

Assignment Date: 4/5/2006 Due 4/17/2006

Related Reference:

Description:
Part 1: SMIL

Using SMIL to create a multimedia presentation, hw3.smi, where
it starts with a background music which consists of the first 5 seconds of some midi/wave file followed by another midi or wav file.
after 1 second, plays the some video file of your choice. (e.g. uccs.rm file in ~cs525/public_html/smil/)
after 2 second, plays a short recorded voice.
after the video file, plays recorded voice with concluding remarks.
copy all these media files to your public_html/smil directory or your can reference them in ~cs525/public_html/smil.
Note that you have freedom to change the above timing according to your multimedia presentation.
Create a link from your web page to hw3.smi and email me the url.

Part2: Video on Demand.

Assume 3 Mbps instead of 1.5Mbps is used to provide the transport of a 100 minute NTSC movie stored in the copier memory. Here we assume a fixed rate encoding. We plan to use a Ultra Wide SCSI-2 disk with 4 heads (each head with
40 Mbps data transfer rate) and 40 MBps SCSI channel transfer rate to deliver the movie.

How many bytes of disk space are needed to store the movie?

Assume a fixed rate encoding, i.e., each frame is encoded into the same amount of bits, how many bits are used to encode a frame?

How many phases can each head produce?

With 4 heads per movie, how long is a phase?

How many frames will be read by each head?

Let the answer in 3) be n. The frames read by each head will be grouped into blocks and each block contains n frames. How many blocks will be read by a head?

Starting with frame 0, show all the frame ID numbers in the first block. Similar to that in Figure 4 of Sincoskie’s paper.

Without additional buffer, what is the longest time that a customer has to wait before seeing the movie?

Homework #3: SMIL based multimedia presentation, VoD

Goal:

Assignment Date: 4/5/2006 Due 4/17/2006

Related Reference:

Sincoskie's Globecom VOD paper.

Copier memory description in Sincoskie's Computer Network paper.

Part2: Video on Demand.