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Chapter 10 – MPEG decoder 53
10911 V01.10
10.4 Display of MPEG video parameters
As soon as a live picture can be seen, the MPEG decoder displays the following parameters in a window at the lower
right edge of the screen..
Profile and level:
e. g. MP @ ML
Chroma format:
e. g. 4:2:0
Video resolution:
e. g. 720*576
LetterBoxFormat:
4:3 or 16:9
The parameter window can be displayed or hidden at any time using the
←
or
→
arrow keys.
10.5 Video bit rate measurement
The MPEG decoder measures the current bit rate of the video stream being broadcast while a live picture is shown. It is
shown in the unit [Mbit/s] in the window described in the section above. The measuring period is 1 second.
10.6 Dynamic program switching
Some program providers divide their programming into regional content at specific times. This means that, for ex-
ample, 4 programs may appear in the MPEG program list which have the same content at certain times and different
content at other times. The program map table (PMT) in the data stream therefore changes over time. In this way, the
station can prompt the receiver to use different packet identities (PIDs).
In the standard setting, the MPEG decoder of the device uses the PMT that was sent at the time of the last program
search. In other words a static PMT.
The dynamic PMT update function can be activated using
MODE
> Settings > Dyn.program switching. If you start the
program now, the decoder continually searches for a new PMT version. If the device detects a change in the PMT, the
current program is stopped, the message “Dyn. program switching” appears and then the program is restarted with the
updated PIDs. These settings are saved in the non-volatile memory and remain active until they are deactivated in the
above menu.
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