ATEM Television Studio: AES/EBU BNC Input from Analog Sound Board?

[Doug Fish]

1) I have no problem with the live remote locations, they are in sync (or close enough that I can’t tell), so the sync for the live feed has been a non-issue.

2) I have, however, had all kinds of problems with the mp4 produced by the ATEM TVS:
–Cannot parse the mp4 without losing sync;
–An mp4 that appears to be in perfect sync becomes out of sync when uploaded (transcoded) to vimeo
–Last week, the mp4 was actually out of sync by 4 seconds.

I have had to take into account these mp4 issues in my workflow and solve post-production using Adobe Premiere Elements 9 by re-aligning the audio and converting to wmv.

Here’s the fixed file from last week, to give you some idea of quality it can produce. This is recorded in 720p, 29.97 FPS, 5 Mbps.

https://vimeo.com/34768037

[Camden Bucey]

Doug, I purchased a Behringer SRC2496 to do the same thing with my ATEM TV Production Studio. I have both a Canare impedance transformer for the XLR output and an RCA to BNC cable adapter. I can’t get either to work. What settings are you using on the SRC2496 to produce output that the ATEM expects?

[Doug Fish]

It’s at church, I’m at home, so I can’t tell you, but I know there is some discussion of the correct settings on the web.

I’m assuming the audio in tests correctly, you can hear music into the SRC2496?

I just found the discussion, see if this helps: Review discussion here

[Camden Bucey]

Yes, I’m getting levels on the SRC2496 just fine and hear everything in the headphones. I am not, however, able to change the clock or sample rate settings on the digital side of things. The clock option is on PLL Lock and I’m unable to change it. No lights are lit up for the sample rate either. I believe the ATEM requires 48kHz in.

Are you using the internal clock or do you have an external word clock?

Thanks for the response.

[Doug Fish]

I use the internal clock.

I believe both PLL Lock and Internal should be lit if you are us ing internal clock.

Truthfully, this has been a “set it and forget it” thing for me. Once I figured out how to get sound in, I have not touched it again besides the power switch and a little gain adjustment. I won’t be back to church to verify the settings until Wednesday.

In the meantime, this is what I *think* they are, from left to right:
Source: Analog In
Source: Shouldn’t matter, this controls digital input, which you are not using (I assume)
Mode: A/D and D/A Conv.
Sample Rate: 48khz
Clock: PLL Lock, Internal
Format: AES/EBU
Word Length: 24 bit
Dither: LED light on (I would try both ways, this should be a quality adustment
Emph LED: LED light off
Copy: Both Lights Off

[Camden Bucey]

Thanks Doug – I’m fairly certain my unit is defective. I’m requesting a replacement.

[Doug Fish]

I thought that might be the case when you said your unit wasn’t responding to button presses.

Although this product is somewhat of an exception, Behringer is not known for quality. I’ve read reviews of this product where people had problems, opened them up and fixed the problem themselves (a wire was loose or something similar).

Thanks for giving me something to do to take my mind off the fever, aches and chills since I stayed home sick today.

[Camden Bucey]

Thanks again. It’s a shame there isn’t a competitor in the ballpark. I’ll let you know if the replacement fixed the problem.

[Mikhail Cherchenko]

Tested, the “Unbalanced XLR Male to BNC Male Cable XLRM-BNC-XX” does work with the Behringer ULTRAMATCH PRO SRC2496 setup. Quality is good, no audio/video latency.

[Camden Bucey]

My Behringer SRC2496 was indeed defective. I received a replacement and it worked without any trouble.