Philips 14AA3322/40B Installationsanleitung PDF herunterladen (Seite 94)

Generation of a transport stream for DVB and realisation of a HF-modulated DVB-signal

94 | P a g e

Figure 2.9: Active PIDs chart arranged by name

Question18

Are the video bitrates fixed or variable?

They are variable. We can see it only on the Active PIDs by rate chart.

Question19

Which is the overall multiplex bitrate?

Around 20Mbps.

Now open the file called “39.mpg”.

Question20

What happens now, with the video bit-rate of every channel? Is it variable or fixed? Which percentage

(%) of the mux is using each TV service (ES Video stream)? Explain it by attaching a snapshot of the

“mux usage stacked area”.

Now it is fixed. Every video stream always uses the 20.09% of the mux. We can see on the chart that

there is no change in time:

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Philips 14AA3322/40B Installationsanleitung Seite 94