Homework SourseHDTV Bit Rate HDTV has an aspect ratio of 169 meaning for a
HDTV Bit Rate HDTV has an aspect ratio of 16:9, meaning, for a width of 16 pixels, there are 9 pixels vertically. In addition, 1080p means the HDTV has 1080 horizontal scan lines on the screen, with those lines \"progressively\" scanned. Assume each pixel is represented by RGB color space, i.e., 8 bits each for red,green,blue, and 30 frames per second for moving pictures. The questions are: 1. What should the resulting bit rate be, in bits per second (bps)? 2. How much compression should be achieved for broadcasting through an IP (Internet Protocol) channel with 10 Mbps capacity? Answer both questions with clear explanations for points
Solution
HDTV BIT RATE:
When we are creating or making the multiple bit rate of profiles inorder to accumodate streaming in the internet connections devices and processors.
If we consider that the HDTV consist of 16pixcel of width and 9pixcel of length will,then the 16:9 pixcel file is in fixed to 24frames in the HDTV per second and that will be displayed with 16bit colour.
But that the colour will be umcompressed file that will make upto the approximately 33MB/s
For desired bitrate wil be,
Desired bit rate= (image width)*(image height)*(frame rate)*(motion rank)*(0.07 )
When the width and height will be expressed in the pixcels and motion rank is an interger that will be in between the 1 and 4.
IF we considering the width is 16 and height is 9,
The desired rate will be=
1080*720*24*2*0.07=261236= 26 kbps,
b)
INTERNET PROTOCAL:
For the TV programs we mainly use for the signals are rooftop anteena and satilite dish, optical cables that are made fiber.
We can stream the channels through out the internet now adays, that the have 1-10 Mbps , but a broadband cable line can be more faster than that is.that are 10 times much more faster working cables with high bandwidth.As now usage of computers with the set of box,
PPP compression control protocol primarily used for the data likned layer conecting the multiple serials.
While 10Mbps Ethernet is suggested by modern LAN , which is more faster than that,
10Mbps=10*100000=10000000bits/s
=10000000/8*1024
= 1,221KB/s
= 122.1KbHDTV BIT RATE:
When we are creating or making the multiple bit rate of profiles inorder to accumodate streaming in the internet connections devices and processors.
If we consider that the HDTV consist of 16pixcel of width and 9pixcel of length will,then the 16:9 pixcel file is in fixed to 24frames in the HDTV per second and that will be displayed with 16bit colour.
But that the colour will be umcompressed file that will make upto the approximately 33MB/s
For desired bitrate wil be,
Desired bit rate= (image width)*(image height)*(frame rate)*(motion rank)*(0.07 )
When the width and height will be expressed in the pixcels and motion rank is an interger that will be in between the 1 and 4.
IF we considering the width is 16 and height is 9,
The desired rate will be=
1080*720*24*2*0.07=261236= 26 kbps,
b)
INTERNET PROTOCAL:
For the TV programs we mainly use for the signals are rooftop anteena and satilite dish, optical cables that are made fiber.
We can stream the channels through out the internet now adays, that the have 1-10 Mbps , but a broadband cable line can be more faster than that is.that are 10 times much more faster working cables with high bandwidth.As now usage of computers with the set of box,
PPP compression control protocol primarily used for the data likned layer conecting the multiple serials.
While 10Mbps Ethernet is suggested by modern LAN , which is more faster than that,
10Mbps=10*100000=10000000bits/s
=10000000/8*1024
= 1,221KB/s
= 122.1Kb
