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noggin12,343 posts since 26 Jun 2001
I'm guessing Sky News, ITN and BBC News have decided to replace local-ends routed via the BT Tower (which was how they traditionally exchanged material and pooled material between themselves) with dedicated IP circuits? Possibly also deployed for common shared locations too?

Wonder what bitrate they are running at. JPEG2000 can look great, but is a high bit-rate codec.

It degrades quite badly at reduced bitrates, but is low latency.
Rkolsen1,381 posts since 20 Jan 2014
BBC World
I'm guessing Sky News, ITN and BBC News have decided to replace local-ends routed via the BT Tower (which was how they traditionally exchanged material and pooled material between themselves) with dedicated IP circuits? Possibly also deployed for common shared locations too?

Wonder what bitrate they are running at. JPEG2000 can look great, but is a high bit-rate codec.

It degrades quite badly at reduced bitrates, but is low latency.


I don't know why they chose such a high bit rate if it's for general news gathering unless they plan to connect it studio to studio.

I could see it deployed at common reporting locations such as Parliament or No. 10 (as a American I don't know what other major places they frequently report from). But I wonder since it's made up of three competitors could say ITN see what the BBC is transmitting?

I do know that here in the US most of the networks have setup their own bi directional Fiber hookups throughout Washington DC (White House Press Room, Pebble Beach at the White House, State Department, the Pentagon and Capitol Hill).
noggin12,343 posts since 26 Jun 2001
I'm guessing Sky News, ITN and BBC News have decided to replace local-ends routed via the BT Tower (which was how they traditionally exchanged material and pooled material between themselves) with dedicated IP circuits? Possibly also deployed for common shared locations too?

Wonder what bitrate they are running at. JPEG2000 can look great, but is a high bit-rate codec.

It degrades quite badly at reduced bitrates, but is low latency.


I don't know why they chose such a high bit rate if it's for general news gathering unless they plan to connect it studio to studio.


JPEG2000 is a (the?) standard for high quality contribution circuits (though Dirac Pro/VC-2 and uncompressed connectivity is also used). I suspect this is the beginning of the end for routing via the BT Tower for connectivity between broadcasters, and between studio facilities and broadcasters. You want low latency (hence an Intra not Long GOP codec), and if you are going to sell it as a replacement for local ends, it needs to be close to transparent.

You certainly won't be using 18Mbs H264 in this kind of application if you want it to be used for sharing material like a Royal Wedding, and a low latency codec reduces the delays (meaning one broadcaster shouldn't be 'ahead' of others)...

Quote:

I could see it deployed at common reporting locations such as Parliament or No. 10 (as a American I don't know what other major places they frequently report from). But I wonder since it's made up of three competitors could say ITN see what the BBC is transmitting?


I think this is a replacement for connectivity between broadcasters - rather than as on OB contribution network - though there are locations where it is common to pool from, so it may make sense to have connectivity from those places.

Quote:

I do know that here in the US most of the networks have setup their own bi directional Fiber hookups throughout Washington DC (White House Press Room, Pebble Beach at the White House, State Department, the Pentagon and Capitol Hill).


Yep - fibre connectivity replaced copper in a number of UK locations too, such as the House of Commons, 10 Downing Street, Heathrow Airport etc.
Last edited by noggin on 1 December 2015 9:34am