[opendtv] Re: Superbowl XL(1080)I

  • From: Craig Birkmaier <craig@xxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Wed, 7 Feb 2007 06:36:29 -0500

At 5:34 PM -0500 2/6/07, Allen Le Roy Limberg wrote:
At 11:35 AM -0800 2/5/07, John Willkie wrote:

 >Sounds to me like WIVB-DT had the settings on their encoders set

For a long while I had thought the networks sent out their stuff already
packaged up in MPEG-2 packets eady to transmit.  I'm told only Fox does
this.  ABC, CBS and NBC send out uncompressed digital video and audio, it
seems; and, as John Wilkie's e-mail suggests, invidual broadcasters handle
compression into MPEG-2 packets for broadcast.

Al Limberg


Fox does compress their programming to emission level for distribution to affiliates. They also have equipment in stations that allow these feeds to be routed directly to the transmitter without re-compression. The other networks send out contribution quality feeds compressed to roughly 45 Mbps. At some times they may reduce this to get more than one program feed through the 45 Mbps links.


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