lostangel: By the time they bother answering we likely will already know the answers to most of the questions.
freitasm: 11. Is there any intention to replace AAC-LATM/HE with better/more available audio codecs (as AC3 which is already on the spec for TV3)?
Freeview – We include both AAC-HE and AC3 in our spec so products are capable of receiving both. It then comes down to the broadcaster to choose what is used. TVNZ plan to start broadcasting using AC3 for 5.1 audio very soon.
12. Are there any intentions to open up the EPG to make it easier for people to retrieve for MythTV/WMC type setups (such as full EPG in EIT like on Satellite)
Freeview – not at this stage and it’s because the broadcasters would have to pay increased transmission fees for the extra data needed for a separate EIT on DTT. The reason the EIT schedule is broadcast for the Freeview satellite service is that there were about 20,000 homes that were already using the EIT schedule for the TVNZ service so when the other broadcasters joined they kept the existing system. There was no legacy platform with Freeview|HD so the broadcasters went for the most cost effective option for broadcasting an eight day EPG.
33. This is a really technical one, but I wouldn't know who else to ask: Why is the centre frequency values in the NIT terrestrial delivery system descriptor all set to 0? It would help some receivers scan more quickly if the values were set properly. (Note: location = Manawatu, tx = Wharite)
Freeview – According to Freeview’s Transmission Rules:
A single Terrestrial Delivery Descriptor shall be used in each Transport Stream Loop of the NIT Actual. Each instance of the Terrestrial Delivery Descriptor shall describe the transmission properties for this Transport Stream. The frequency field within the Terrestrial Delivery Descriptor shall be set to zero in all cases. The Frequency List Descriptor defines the frequency on which Transport Streams are broadcast.
The reason for this being that the Freeview network transport streams are available across multiple frequencies depending which transmitter you are using. Therefore, we set the terrestrial_delivery_system descriptor centre_frequency to be zero and use the frequency_list descriptor to specify all of the different centre_frequencies that that transport stream is carried on