[opendtv] Re: Are ATSC Stations Going Off The Air?

  • From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
  • To: "opendtv@xxxxxxxxxxxxx" <opendtv@xxxxxxxxxxxxx>
  • Date: Thu, 10 Oct 2013 22:05:47 +0000

Mike Tsinberg wrote:

> Yes I had also troubles when I was using DSL with bit rate hovering
> around 1Mb/s. However, when I switched to lowest Cable data rate tear
> around 3.5 Mb/s to 4 Mb/s I never had problems with Netflix, iTunes
> or Skype.

In spite of Verizon's incessantly exhorting us to get FiOS, I'm still hanging 
on with ADSL. In our case, I can usually coax the modem to get a decent ATM 
link, so that my measured IP bit rate is around 1.83 Mb/s, or occasionally up 
to 2.17 Mb/s, downstream.

We've had no trouble with Skype, and I use this method to watch all of my prime 
time TV these days. Sometimes I'm streaming TV downstairs, while my wife is 
doing the same thing upstairs (different program -- not that this matters, as 
each session is unicast regardless).

Here's what I did notice, though.

Yes, there are times when the picture stops while my WiFi USB stick is 
frantically downloading data. But how clever are these guys? This almost 
exclusively happens during commercial breaks. It turns out that the streaming 
protocol pre-loads much or perhaps all of the next program segment, during ad 
breaks. So if anyone has trouble out there, check to see if the same might not 
be happening to you. Some ads are worse than others, but almost always, the 
actual program streams just fine.

This may also explain why many ads appear to be lower res than the program 
itself. While the ad is streaming, the server is simultaneously pre-loading the 
next program segment.


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