TheX-KXRX said:I too hope they continue on the same course with MeTV I recently gave Comcast or Xfinity or whatever they are calling themselves these days the boot to save some coin and I installed a nice powered exterior Digital Antenna and KVOS is one of the signals I most watch these days.
toonces2u said:TheX-KXRX said:I too hope they continue on the same course with MeTV I recently gave Comcast or Xfinity or whatever they are calling themselves these days the boot to save some coin and I installed a nice powered exterior Digital Antenna and KVOS is one of the signals I most watch these days.
Interesting. What do those antenna's run? What kind of reception do you get and what's the channel selection like? I too would love to give Comcast the boot.
Bongwater said:KTBW, though all religious, is curious enough - it has FOUR sub-channels. I'm not sure what the maximum number of subchannels one DTV station can technically transmit simultaneously. But I've heard 8 total were possible, at some expense of video quality on all the other channels.
w9wi said:Bongwater said:KTBW, though all religious, is curious enough - it has FOUR sub-channels. I'm not sure what the maximum number of subchannels one DTV station can technically transmit simultaneously. But I've heard 8 total were possible, at some expense of video quality on all the other channels.
There is no hard-and-fast maximum. I suppose if you try to do more than 999 streams you run out of digits for minor channel numbers.
Each station gets a 19MBPS "pie". They can carve that pie up into as many slices (and as large slices) as they want, as long as it all adds up to 19MBPS or less.
The tradeoff is, the smaller the slice, the more heavily the picture must be compressed to fit. (and the poorer the picture quality) HD requires a larger slice for a decent picture.
Most engineers feel two HD programs are the maximum for decent quality. One HD and one SD seems to work pretty well. One station here (Nashville) is running one HD and two SDs -- two of them look pretty good but the other SD is pretty ugly. Trinity (owners of KTBW) are using the same five subchannels on all their stations. IMHO all five look pretty good. There are stations running as many as ten SDs -- I've not seen one & I suspect they're kinda ugly.
Programs without much motion compress better (and can deliver decent quality with a smaller slice of the pie) than those with motion. One Milwaukee station runs three channels that are essentially radio stations. (audio requires FAR less bandwidth/"pie" than video) There is video, but it's a still describing the musical selection currently being broadcast.
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"TheX-KXRX": it's not that OTA HD is not compressed at all -- completely uncompressed HD requires about 1500MBPS of bandwidth, more than is available from all TV channels put together. However, it is more heavily compressed on cable & satellite.
w9wi said:Bongwater said:KTBW, though all religious, is curious enough - it has FOUR sub-channels. I'm not sure what the maximum number of subchannels one DTV station can technically transmit simultaneously. But I've heard 8 total were possible, at some expense of video quality on all the other channels.
There is no hard-and-fast maximum. I suppose if you try to do more than 999 streams you run out of digits for minor channel numbers.
Each station gets a 19MBPS "pie". They can carve that pie up into as many slices (and as large slices) as they want, as long as it all adds up to 19MBPS or less.
The tradeoff is, the smaller the slice, the more heavily the picture must be compressed to fit. (and the poorer the picture quality) HD requires a larger slice for a decent picture.
Most engineers feel two HD programs are the maximum for decent quality. One HD and one SD seems to work pretty well. One station here (Nashville) is running one HD and two SDs -- two of them look pretty good but the other SD is pretty ugly. Trinity (owners of KTBW) are using the same five subchannels on all their stations. IMHO all five look pretty good. There are stations running as many as ten SDs -- I've not seen one & I suspect they're kinda ugly.
Programs without much motion compress better (and can deliver decent quality with a smaller slice of the pie) than those with motion. One Milwaukee station runs three channels that are essentially radio stations. (audio requires FAR less bandwidth/"pie" than video) There is video, but it's a still describing the musical selection currently being broadcast.
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"TheX-KXRX": it's not that OTA HD is not compressed at all -- completely uncompressed HD requires about 1500MBPS of bandwidth, more than is available from all TV channels put together. However, it is more heavily compressed on cable & satellite.