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noggin14,158 posts since 26 Jun 2001
I noticed today's DTL with Nigel Farage appeared to have absolutely no audio delay, allowing the debate to flow much better. Is this just because Nigel was in a Westminster facility I wonder.


Almost certainly. If a studio is sent via a fibre or similar resilient, IP (ideally not internet) route, particularly if very lightly compressed, or uncompressed, the delay can be just a few frames (a frame is 40ms).

If you need to use DVB or VSAT satellite (which has speed of light delay), low bitrate codecs (which introduce codec delay) or mitigate packet loss (by buffering which introduces delay) then you get much more delay...
TVEngineer36 posts since 12 Jan 2017
London London
I noticed today's DTL with Nigel Farage appeared to have absolutely no audio delay, allowing the debate to flow much better. Is this just because Nigel was in a Westminster facility I wonder.


Almost certainly. If a studio is sent via a fibre or similar resilient, IP (ideally not internet) route, particularly if very lightly compressed, or uncompressed, the delay can be just a few frames (a frame is 40ms).

If you need to use DVB or VSAT satellite (which has speed of light delay), low bitrate codecs (which introduce codec delay) or mitigate packet loss (by buffering which introduces delay) then you get much more delay...



The ITV internal video distribution and data network called XNET is very low latency, a frame at the most. I didn't see it but the DTL was probably from the ITV/ITN/Channel 4 shared facility in 4 Millbank which is connected to XNET. Reverse comms would have been done over POTS or ISDN which (depending on ISDN codec used) improves overall latency further.
I work in telly, I sometimes get time to watch telly. More of a technology geek than a presentation geek!
JamesM0984
Central (East) East Midlands Today
Please bring this thread back on topic: comment on Charlotte Hawkins sitting on the right with a slightly different voiceover or speculate on yet more tweaks and revamps in January/March/September.


In-depth coverage will begin during half term.
3
Spencer For Hire, what and Alex Plain-Later gave kudos
Rkolsen2,534 posts since 20 Jan 2014
BBC World
No one has mentioned that this morning while Piers was ranting about the lack of professionalism in the gallery, they took him off air.

*


Proves to never criticize the people that make you look good. Be kind to hair, make/up, camera crew, stage hands (you may get food that was spit in) and gallery staff who can change your voice, cut your mic and take you off air.
Don’t let anyone treat you like you’re a VO/SOT when you’re a PKG.
2
Jeffmister and TROGGLES gave kudos
itsrobert6,246 posts since 23 Mar 2001
Granada North West Today
I got the impression it was very much tongue-in-cheek though. Piers was ranting (jokingly) about the gallery wanting him to read something and they momentarily went to black with audio intact. They then brought the picture back and moved the camera shot over to Charlotte to cut Piers out, before returning to both Piers and Susanna. It was definitely the gallery having a bit of fun rather than them seriously taking him off air.
2
Jeffmister and Chris J gave kudos
jacobmorton_2725 posts since 14 Apr 2018
Anglia (West) Look East
Just seen that Dominic Green (GMB voiceover) is leaving ITV. He recently said he’d recorded VO up until Easter, so I suppose that means we’ll have a new voiceover artist for GMB in the next few months. I hope the 2015 voiceover doesn’t come back.
3
Gary Baldy, ittrgrey and BBI45 gave kudos