Question

In: Computer Science

2.Consider a video file with the following specifications: • Width: 1920 • Height: 1080 • Frame...

2.Consider a video file with the following specifications:

• Width: 1920

• Height: 1080

• Frame rate: 60 fps

• Length: 2 hr 20 mins

• Each frame is stored in 36-bit RGB

a) What is the video bit rate per second?

b) What is the size of the video file in GB (GigaBytes)?

3. If audio is added to the above video with the following specifications:

• Sample rate of 44.1 kHz

• Sampling depth: 16 bits

• Dolby digital 5.1 surround sound

a) What is the audio bit rate per second?

b) What is the size of the audio+video file?

Expert Solution

* I have solved all four question by mentioning formula with the solution. If your answer doesnot matches you can put the values in formula get the right answer though I have checked many time it is correct.

* If you find it worth it will be a pleasure for me and may I get like also.

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Lets calculate Video size by using following formula:

= (60 * 1080 * 1920 * 36 * 8400) (bits)

= 37623398400000 bits

= 4702.9248 Gigabytes

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Lets calculate Video Bit rate using following formula:

= (37623398400000 / 8400) (bits/sec)

= 4478976000 bits/sec

= 4478.976 Mbps

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Finding audio bit rate:

= 44100 * 16 * 5.1

= 3598560 bits per second

= 3.6 Mbps

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Finding total size Audio + Video :

= [ 4478976000 + 3598560] * 8400

= 37653626304000 bits

= 4706.7 Gigabytes

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venereology answered 10 months ago

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