Alain Vaslet wrote:
Klaus Schmidinger schrieb:
Since around the beginning of this year the ZDF broadcasts with a much higher bandwidth than before. That's why recording and watching channels on that transponder is a problem on a single card system.
Arrrrgh! It's a higher bit (data) rate but _not_ bandwidth!
But doesn't that ultimately result in a higher bandwidth of that particular broadcast?
??? NO! The reason why ZDF is broadcasting at a higher bit rate is that Eurosport and Euronews went off their transponder (to KDG transponder on 23,5°). Bandwidth is a measure of frequency range, measured in hertz. This range has _not_ changed which would be rather difficult because frequencies on satellites are pretty fix. Also modulation, FEC and symbol rate have not been changed.
Alain
I was not referring to the bandwidth of the entire transponder. I'm pretty sure that hasn't changed. I was referring to the individual signal of the ZDF channel, with
VPID: 110 APID: 120=deu,121=2ch DPID: 125=dd
Apparently they are broadcasting that channel using a bigger chunk of the total transponder capacity, which means a higher data rate, ok, but ultimately results in a sharper image with more details and better audio (why else would they do it?). And a sharper image means that the video signal has a higher bandwidth, doesn't it?
Klaus