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Feed on the blink again
they really need to replace that hamster in the wheel on the nasa tv feed, I
think Brian -- Brian Gaff - Note:- In order to reduce spam, any email without 'Brian Gaff' in the display name may be lost. |
#2
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Feed on the blink again
Brian Gaff wrote:
they really need to replace that hamster in the wheel on the nasa tv feed, I think Brian Well its back for a while at any rate Brian -- Brian Gaff - Note:- In order to reduce spam, any email without 'Brian Gaff' in the display nam may be lost. |
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Feed on the blink again
Brian Gaff wrote: Brian Gaff wrote: they really need to replace that hamster in the wheel on the nasa tv feed, I think I think the outages on NASA TV may be the result of the new, all digital system that NASA TV is using. There are now four channels embedded in NASA's MPEG video video, which are all used for different purposes. All of them can be made available "free to air" or in an encrypted format. During the outages that we've seen, I bet NASA was using NASA TV 1 (the "standard" NASA TV feed) to dump engineering video to the other NASA centers for analysis. By switching from free-to-air to encrypted, they essentially cut the feed off from the general public while the engineering video was shared out to the other NASA centers. Now, I'm not proposing an conspiracy theories for all of you tin-foil-hat-wearers out there. : ) Rather, I think this is just a new capability that the folks from NASA have, that the carriers who simulcast NTV online and via DBS were not prepared for, which has led to the service interruptions we've seen. |
#4
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Feed on the blink again
"Craig Cocca" wrote in message oups.com... Brian Gaff wrote: Brian Gaff wrote: they really need to replace that hamster in the wheel on the nasa tv feed, I think I think the outages on NASA TV may be the result of the new, all digital system that NASA TV is using. There are now four channels embedded in NASA's MPEG video video, which are all used for different purposes. All of them can be made available "free to air" or in an encrypted format. During the outages that we've seen, I bet NASA was using NASA TV 1 (the "standard" NASA TV feed) to dump engineering video to the other NASA centers for analysis. By switching from free-to-air to encrypted, they essentially cut the feed off from the general public while the engineering video was shared out to the other NASA centers. Now, I'm not proposing an conspiracy theories for all of you tin-foil-hat-wearers out there. : ) Rather, I think this is just a new capability that the folks from NASA have, that the carriers who simulcast NTV online and via DBS were not prepared for, which has led to the service interruptions we've seen. The service interruptions (at least on launch day) were due to thunderstorms in the DC area where the DBS is uplinked. NASA doesn't use the MPEG video channels to dump engineering video because the video quality is not good enough. Most engineering video is uplinked on AMC transponder 5 because the analog bandwidth is higher compared to the low digital bandwidth on the multiplexed DBS channels. As I have pointed out in earlier posts, NASA has not effectively used these 4 MPEG channels on this mission, choosing instead to show the same programming on all four. |
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