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Rkolsen3,305 posts since 20 Jan 2014
BBC World News
Lovely view of the Clyde Arc in a rather deserted Glasgow last night on Newsnight.

It seems we are only treated to a full end credit sequence on Fridays at present if the programme is from Glasgow. Those from Studio E at NBH just use a short end title animation.
https://www.youtube.com/watch?v=4egSNXmJ70w


In regards to Newsnight coming from Glasgow - here is the set located in BBC Scotland’s top floor canteen.

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I take it it’s wired for cameras? Weren’t some of these new facilities wired so you could go live anywhere?
Don’t let anyone treat you like you’re a VO/SOT when you’re a PKG.
noggin14,946 posts since 26 Jun 2001

I take it it’s wired for cameras? Weren’t some of these new facilities wired so you could go live anywhere?


Looks like there could be a wallbox in the bottom right of that that photo ?


Yes. PQ has lots of 'presentation spaces' pre-wired. That's been 'a thing' in BBC buildings for decades - dating back to BBC Oxford Road and Pebble Mill buildings.

NBH has copper and fibre connectivity in most areas.
Rkolsen3,305 posts since 20 Jan 2014
BBC World News

I take it it’s wired for cameras? Weren’t some of these new facilities wired so you could go live anywhere?


Looks like there could be a wallbox in the bottom right of that that photo ?


Yes. PQ has lots of 'presentation spaces' pre-wired. That's been 'a thing' in BBC buildings for decades - dating back to BBC Oxford Road and Pebble Mill buildings.

NBH has copper and fibre connectivity in most areas.


Wired for Triax or general HD-SDI, a lot of the studio cameras output 3G HD-SDI so that wouldn’t be an issue (especially with maximum lengths of digital triax). Fiber I assume could be connected to a multiplex system (like from Multidyne were they bought by Belden ?)and transmit almost a whole studios worth of cameras.

And now I think Grass Valleys new LDX100 camera you’re can just plug it into any 10 or 25GB fiber connection and connects to the network.
Last edited by Rkolsen on 11 May 2020 6:18pm
Don’t let anyone treat you like you’re a VO/SOT when you’re a PKG.
valley133 posts since 9 Feb 2020
Wired for Triax or general HD-SDI, a lot of the studio cameras output 3G HD-SDI so that wouldn’t be an issue (especially with maximum lengths of digital triax). Fiber I assume could be connected to a multiplex system (like from Multidyne were they bought by Belden ?)and transmit almost a whole studios worth of cameras.

And now I think Grass Valleys new LDX100 camera you’re can just plug it into any 10 or 25GB fiber connection and connects to the network.


The most common studio cameras need a CCU in order to do the image processing, connect to an RCP, provide tally/talkback, genlock, etc. and just the number of BNCs which feed a single CCU would take up a lot of space on a wallbox, so it's much more sensible to keep all CCUs in a VAR and just use a SMPTE fibre patch (SMPTE or single-mode). That's not to say it's not done, though, but it's much more complex.

Most modern (or modernised) studio facilities are SMPTE 311M for camera channels rather than triax (although NBH is still triax I believe). Some facilities also take SMPTE and convert it to use dual single-mode fibre. The HDCE-100 / HKCU-SM100 is Sony's version of it with a power injector as well but I have only used some non-OEM products. Personally I've found the Multidyne multiplexing system to get multiple cameras down one fibre to be rather unreliable.

And yes, the LDX100 can act as a self-contained unit with all the processing contained locally, without the need for a CCU. Lots of facilities are still SDI so I doubt we will see those being widely deployed anywhere but new facilities and trucks.
noggin14,946 posts since 26 Jun 2001

Looks like there could be a wallbox in the bottom right of that that photo ?


Yes. PQ has lots of 'presentation spaces' pre-wired. That's been 'a thing' in BBC buildings for decades - dating back to BBC Oxford Road and Pebble Mill buildings.

NBH has copper and fibre connectivity in most areas.


Wired for Triax or general HD-SDI, a lot of the studio cameras output 3G HD-SDI so that wouldn’t be an issue (especially with maximum lengths of digital triax).


A mix - though PQ is SMPTE fibre for cameras, not Triax - so I'd expect some SMPTE fibres, rather than triax, (to run cameras over) that would go to a patch position to allow them to be patched to CCUs. 'Proper' cameras don't use HD-SDI or 3G-SDI for interconnection - they use SMPTE or Triax - as that carries prompt feed, reverse vision for the operator to see the programme and feed a vanity monitor (or in some cases also a secondary feed - like an ME bank to line-up and inset shot etc.), talkback, programme sound (so the operator can hear the programme), tallies etc. All that happens over a single SMPTE fibre connection - and that also powers the camera. One cable.


SDI connectivity for cameras is really limited to cheap news installations where brick cameras or cheap PTZs are used. The more features you add to the camera, the more cables you end up looming together, so much so you end up with a horrible snake of a mesh-wrapped umbilical (or worse - lots of taped together cables)

(Though many people run prompt hoods from a separate power feed rather than the camera power outlet - to avoid a failing prompt hood tripping the camera power. So even with SMPTE or Triax you can end up with a loom still...)

There will probably be some SDI (or fibre-to-SDI converters) to allow for in-vision and out-of-vision monitors. Some audio connectivity - both copper and possibly fibre connectivity to allow a stage box to be connected, and also possibly some RF or RF-over-fibre routing to allow RF mics and IEMs to work)

Quote:

Fiber I assume could be connected to a multiplex system (like from Multidyne were they bought by Belden ?)and transmit almost a whole studios worth of cameras.


Not sure why you'd bother with that - just patch SMPTEs between camera heads and CCUs? Why would you need to multiplex it? Fibre isn't that expensive to install when you build a studio centre.

Quote:

And now I think Grass Valleys new LDX100 camera you’re can just plug it into any 10 or 25GB fiber connection and connects to the network.


Yep - if you buy the Direct IP system then the camera can be plugged into a SHED-style device to inject power at the camera end, and passively convert the SMPTE cable feed to an IT connector (SC/ST etc.) and connect to an IP-switch. Somewhere else on the IP network will be a corresponding XCU (GVGs name for a Direct IP CCU) that you connect to the switch, and that has audio and video connectivity (baseband or IP) that you would expect. if you don't need any of that baseband functionality then it's possible that you can run a GVG camera without an XCU.
2
Inspector Sands and valley gave kudos
Technologist152 posts since 10 Oct 2018
London London
Camera interconnections are the best example of the use of IP - A bidirectional requirement
- signals from Video - even RGB/YCrCb at highest quality - as well as AutoQ. Viewfinder etc
Lots of audio from Mics to many talkbacks,
the control of camera and lens functions and the simple cue light!
SMPTE has now made Its ST 2110 standard "pro media over IP"free to down load - and a few more
https://www.smpte.org/free-standards-and-publications
and you might also like to look at their FREE webcasts -
almost one a day! -and they are recorded - just link to the series from this page
https://www.smpte.org/smpte-webcasts
can I recommend the Core concepts series -particularly on Cameras !
https://www.smpte.org/webcast/smpte-core-concepts-webinar-collaboration-thebroadcastknowledgecom
Last edited by Technologist on 12 May 2020 11:34am - 3 times in total
Rkolsen3,305 posts since 20 Jan 2014
BBC World News

Yes. PQ has lots of 'presentation spaces' pre-wired. That's been 'a thing' in BBC buildings for decades - dating back to BBC Oxford Road and Pebble Mill buildings.

NBH has copper and fibre connectivity in most areas.


Wired for Triax or general HD-SDI, a lot of the studio cameras output 3G HD-SDI so that wouldn’t be an issue (especially with maximum lengths of digital triax).


A mix - though PQ is SMPTE fibre for cameras, not Triax - so I'd expect some SMPTE fibres, rather than triax, (to run cameras over) that would go to a patch position to allow them to be patched to CCUs. 'Proper' cameras don't use HD-SDI or 3G-SDI for interconnection - they use SMPTE or Triax - as that carries prompt feed, reverse vision for the operator to see the programme and feed a vanity monitor (or in some cases also a secondary feed - like an ME bank to line-up and inset shot etc.), talkback, programme sound (so the operator can hear the programme), tallies etc. All that happens over a single SMPTE fibre connection - and that also powers the camera. One cable.


SDI connectivity for cameras is really limited to cheap news installations where brick cameras or cheap PTZs are used. The more features you add to the camera, the more cables you end up looming together, so much so you end up with a horrible snake of a mesh-wrapped umbilical (or worse - lots of taped together cables)

(Though many people run prompt hoods from a separate power feed rather than the camera power outlet - to avoid a failing prompt hood tripping the camera power. So even with SMPTE or Triax you can end up with a loom still...)

There will probably be some SDI (or fibre-to-SDI converters) to allow for in-vision and out-of-vision monitors. Some audio connectivity - both copper and possibly fibre connectivity to allow a stage box to be connected, and also possibly some RF or RF-over-fibre routing to allow RF mics and IEMs to work)

Quote:

Fiber I assume could be connected to a multiplex system (like from Multidyne were they bought by Belden ?)and transmit almost a whole studios worth of cameras.


Not sure why you'd bother with that - just patch SMPTEs between camera heads and CCUs? Why would you need to multiplex it? Fibre isn't that expensive to install when you build a studio centre.

Quote:

And now I think Grass Valleys new LDX100 camera you’re can just plug it into any 10 or 25GB fiber connection and connects to the network.


Yep - if you buy the Direct IP system then the camera can be plugged into a SHED-style device to inject power at the camera end, and passively convert the SMPTE cable feed to an IT connector (SC/ST etc.) and connect to an IP-switch. Somewhere else on the IP network will be a corresponding XCU (GVGs name for a Direct IP CCU) that you connect to the switch, and that has audio and video connectivity (baseband or IP) that you would expect. if you don't need any of that baseband functionality then it's possible that you can run a GVG camera without an XCU.


I meant for the multiplexer to take the HD-SDI outputs of cameras and send it over a fiber line.

I thought some higher end Sony cameras that once setup and if need be you could power locally and use its HD-SDI output. I’m looking at HDC-4300 which has two 3G outputs (plus a monitor), the HDC 3000 series and the HDC-5500. When they’re used wireless adapters where it’s modified for a battery and a transmitter those take HD-SDI from those cameras.
Don’t let anyone treat you like you’re a VO/SOT when you’re a PKG.
dosxuk4,572 posts since 22 Oct 2005
Yorkshire Look North (Yorkshire)
I meant for the multiplexer to take the HD-SDI outputs of cameras and send it over a fiber line.

I thought some higher end Sony cameras that once setup and if need be you could power locally and use its HD-SDI output. I’m looking at HDC-4300 which has two 3G outputs (plus a monitor), the HDC 3000 series and the HDC-5500. When they’re used wireless adapters where it’s modified for a battery and a transmitter those take HD-SDI from those cameras.


But by doing that you lose a lot of the features and convenience of using a studio camera. Using is wireless is a different matter entirely as you're less likely to need many of those features, and you're likely to end up setting up a back channel for data and other signals anyway (which won't go down your multiplexed SDI fibre either).