Posted 09 August 2010 - 10:39 AM
On the other hand, a TV provider like DirecTV or Comcast (or Verizon or AT&T, etc.) could be pulling in a feed over fiber before that final stage of compression, and so could be delivering a higher-quality feed than what goes out OTA. True, most OTA stations are actually picked up OTA, recompressed using MPEG4 (with very little additional loss in most cases), and sent out, but some feeds are fiber and are very high quality.
Even the fiber feeds to the providers are only carrying that station's MPEG2 stream.
A station isn't going to spent the initial capital, nor pay more monthly for additional bandwidth, to provide a different feed to other providers.
Yes, local stations could...but they don't...it's either ATSC OTA pickup...or the same MPEG2 via fiber.
Better PQ supplied by locals to cable and sat is an interesting myth. What TV station would market, "Don't watch OTA when cable or sat has our best picture ever!"
5 LNB Slimline & SWM-16
SWM1 2 HR20s & HR21 via SWS-4 "green label" 4-way splitter w/power pass one leg for PI - SWM2 2 HR20s & HR21 after SWS-4 "green label" 4-way splitter
2 HR20-700 Wireless network for DoD
HR20-700 eSATA Vantec NexStar CX w/ 2TB WD20EVDS
HR21-100/AM21 Wireless network for DoD
With diplexed OTA via an "out" on one SWS-4 4-way splitter, using a Winegard YA 1713 - Channel Master 4228 - Channel Master 7777 in the attic.
Yes, my market has HD LiLs...and I'm still not giving up OTA! No rain-fade, and all sub-channels 24/7/365.
Also, with diplexed Cox Internet on one leg, downstream of a SWS-4 4-way splitter, using a SWS-2 2-way splitter, as a combiner.
R10 via SWM-16 Legacy 1
In boxes HR10-250, HDVR2 & (2) D10-300