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XLR Audio to SDI AES/EBU on ATEM Television Studio
My client is a belly dancer and we are looking to set up a streaming TV studio. SO far we have a few HDMI cameras with the ATEm TV Studio. Right now my concern is getting the audio into the process.
I am looking to take audio from a basic audio mixer and run it into the ATEM Television Studio Aes/EBU in.
I am looking at getting the
Mini Converter HDMI to SDI – 295
or
Mini Converter Audio to SDI – 495The ultimate question is can I use the HDMI to SDI and just use the audio…. this will save me 200.00
or
Does it matter if I use the HDMI to SDI. I mean I only really need the audio and I am looking to save as much money on this project as possible. -
20 Replies
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send your audio mixer into this product –
https://www.bhphotovideo.com/c/product/264903-REG/Behringer_SRC2496_ULTRAMATCH_PRO_Sample.html$163 for this. It will convert your analog audio mixer into AES.
Then take the AES output and go into this –
https://www.markertek.com/Audio-Equipment/Audio-Interface/Impedance-Matching-Transformer/Canare-Corporation-Of-America/BCJ-XJ-A10TRA.xhtml?BCJ-XJ-A10TRANow you will have the BNC AES signal that you need.
AND if you can arrange a private belly dance for me, maybe I will just give you this equipment.
Bob Zelin
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Bob’s approach will indeed work, but so will using the Blackmagic Audio to SDI miniconverter. The upside of using Bob’s method is that is injects the audio into the ATEM, and if you’re using their software to record the ATEM’s H.264 feed, it gets the audio into the recording.
There are several downsides, though. One is that some people refuse to buy Behringer products on the basis of quality and on their business practices. There are other products that convert analog audio to AES; Rane, for example, makes the very versatile and well-made ML1.
One advantage to the miniconverter is that it can be used as a standalone device: if you only need a single camera for a project, it will embed audio into the video without your needing to set up the ATEM, a multiviewer monitor, and control computer.
Another plus for the miniconverter is that it can insert four analog channels, or four AES stereo pairs, into the video; going through the ATEM limits you to one stereo pair.
Tradeoffs!
Jeff Hartman
Engineering Project Manager
Newport Television, Northeast -
You did not reveal the rest of the signal chain. Do you really NEED audio embedded into the digital video stream? What is the destination of the video from the ATEM switcher? Does it require SDI or HDMI? Or are you running analog/composite? Does the destination require embedded audio, or will it accept a separate audio source? (Such as line-level audio from your mixer?)
You can feed AES digital audio into the ATEM using a less expensive option such as the Behringer Ultramatch Pro SRC2496 (~US$150). This method has the added benefit that the ATEM will handle syncing the audio and video together. The external mini converters cannot do that. Of course, if you are sending video/audio over the internet, chances are that you audience won’t even perceive an A/V sync error of a few frames. The typical performance of the internet will completely swamp that small error into insignificance.
Yeah, Behringer doesn’t have the greatest reputation, but I am beginning to wonder about BMD here. Their chronic lack of even basic/minimal technical documentation significantly reduces the value of their equipment IMHO.
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Will the SRC2496 connect straight to the ATEM TV switcher AES input without the impedance transformer? Say using an RCA to BNC or XLR to BNC cable without the transformer in-line?
I was reading this thread and the couldn’t tell if the transformer was used in the setup or not.
Will the setup fail or should I expect problems if I’m not using a 110-75 ohm transformer? Or is the transformer just being used as a format changer (XLR to BNC)?
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According to other user accounts, yes the SRC2496 SPDIF RCA output is 75 ohms and operates properly with the 75-ohm BNC input of the ATEM. Just a simple RCA to BNC cable is needed.
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I resent everyone’s resentment to the mention of “business practices”. Everything that we buy today is “too cheap”, and cannot be manufactured in the US or Western Europe because it would be “too expensive”. So everyone on these forums (ALL the forums – and Quantel doens’t have a forum here) is buying electronic products from slave labor or child labor – so don’t you all be so “almighty” – you know that the only way to make fantastic products for $100 – $300 is if someone is suffering. Behringer does it, Foxcomm (Apple) does it – so give me a break. You want to protest – buy Quantel. No one is suffering at Quantel.
bob Zelin
(Richard – you are right – you can just take the 75 ohm RCA output and feed the ATEM – great simple discovery !). -
[Bob Zelin] “I resent everyone’s resentment to the mention of “business practices”.”
Bob, I’m not sure what you assume I’m referring to — but from your tone and wording, you’re apparently thinking about cut-rate Asian outsourcing… which is an issue I did not have in mind.
Behringer has a particular history of ignoring FCC certification requirements, as well as infringing on other companies’ intellectual property rights — neither of which are necessary or characteristic of successful businesses.
— Jeff
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I assume you are refering to Behringer copying the Mackie series of mixers and speakers (which they absolutely did, and obviously, got away with).
But just like Wal-Mart – if you make the same product for 1/3 the price, we American’s don’t care who gets screwed, as long as we can get it dirt cheap. I know very well that a Behringer mixer won’t last more than 3 years – but I keep installing them, because people want cheap.
With that said – the SRC-2496 is one of the few products that are not copied from another manufacturer – and it’s cheap – and it works pretty well.
bob Zelin
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Thanks Richard. The switcher and SRC2496 both arrived today and indeed a simple RCA-BNC cable worked great for connecting the two.
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[Bob Zelin] “I assume you are refering to Behringer copying the Mackie series of mixers and speakers (which they absolutely did, and obviously, got away with).”
Mackie… Aphex… Roland… Peavey.
[Bob Zelin] “But just like Wal-Mart – if you make the same product for 1/3 the price, we American’s don’t care who gets screwed, as long as we can get it dirt cheap. I know very well that a Behringer mixer won’t last more than 3 years – but I keep installing them, because people want cheap.”
There will always be people willing to look the other way if the price is low enough; but the number of people who refuse to do business with Behringer gives the lie to the blanket suggestion that all Americans are unprincipled accessories to intellectual theft.
What I don’t understand is how people who make their living doing technical design — and who would presumably be very upset to have their own work stolen — would knowingly support a company with that history.
Jeff Hartman
Engineering Project Manager
Newport Television, Northeast
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