ATEM Timecode Reading

Questions about ATEM Switchers, Camera Converter and everything live!
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Mt. Bee

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  • Real Name: Erwin Beetschen

ATEM Timecode Reading

PostSat Aug 17, 2024 9:52 pm

Hello everyone

In addition to my two BMPCC6Ks, I have now bought other cameras, other models that are better suited for certain occasions.

I am now struggling with the timecode issue in my multicam project.

My Deity-TC1 can easily pass a timecode to both BMPCC6ks and my Sony and Canon cameras
also work perfectly.
The problem is that I want to control the camera functions with the ATEM mini EXTREME ISO,
and as soon as I connect it to the HDMI, the BMPCC6K automatically takes
over the timecode from the ATEM.

That would actually be OK if I managed to send this timecode to the Deity TC1,
but I am not receiving any timecode, not via one of the 8 HDMI inputs and not via
one of the two HDMI outputs.
Or I am not understanding it correctly.

How can I get the timecode that the ATEM transmits via HDMI cable (ARC Audio Return Channel)
and send it to my Deity?

I read about trying a trick and plugged a Deity into the Mic1 connection,
now the ATEM records the noise of the Deity timecode with the ISO videos.
I now have the synchronous recording of the two BMPCC6Ks as a 6K recording in the camera
and as ISO from the ATEM.
Now I don't understand how I can synchronize the other two cameras,
which are also available in the ISO version but cannot be started by the ATEM,
using the timecode noise from the Mic1 channel???

Does anyone have any ideas about this?
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Nelson Villamil

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Re: ATEM Timecode Reading

PostSun Aug 18, 2024 8:56 pm

Hi Erwin

I hope this can help you,
I recently did an installation where the client needs the timecode signal generated by the ATEM to send it to 3 Sony cameras and at the same time to 3 HyperDeck (ISO)
NOTE: using ATEM SDI Extreme. using SDI connections

Using one of the ATEM outputs, (All outputs include the TimeCode Signal) connected to a HyperDeck Studio HD Mini, now, the HyperDeck Time Code OUT signal is the Time Code signal generated by the ATEM.
(My example I sent the TimeCode to the others HyperDeck and the cameras)

In other words, the HyperDeck is "used to extract" the TimeCode signal generated by the ATEM

My 2 cents
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Howard Roll

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Re: ATEM Timecode Reading

PostSun Aug 18, 2024 10:50 pm

Mt. Bee wrote:How can I get the timecode that the ATEM transmits via HDMI cable (ARC Audio Return Channel)
and send it to my Deity?


The timecode isn't embedded in the ARC it's embedded in the anc data of the video signal. There is a fairly lengthy thread addressing this process which will likely include an HDMI to SDI converter, maybe UDX, and a Teranex mini which will extract the RP-188 from the SDI and output it as LTC. The Atem would need to be the master clock and you'd jam the TC-1 to the LTC from the Teranex.

Good Luck

viewtopic.php?f=4&t=110569
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Mt. Bee

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  • Real Name: Erwin Beetschen

Re: ATEM Timecode Reading

PostFri Sep 06, 2024 8:11 am

hello everyone
Thank you,

Does this mean I have to buy a Hyperdesk device just for exporting timecode??

Can someone explain to me why I need to buy this device?
I record all of my recordings directly onto an external SSD on my BMPCC6K
I do all the control with ATEM
I don't understand why I need this Hyperdesk?
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Mt. Bee

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  • Location: Switzerland
  • Real Name: Erwin Beetschen

Re: ATEM Timecode Reading

PostFri Sep 06, 2024 8:20 am

>>> The timecode is not embedded in the ARC, but in the ANC data of the video signal.

Oh, I completely misunderstood that, I realized that my BMPCC6k was getting the timecode signal over the HDMI cable via the reverse ARC channel of my HDMI cable..

Where exactly is the timecode signal “hidden” on the ATEM HDMI?

I bought a Blackmagic HDMI to SDI converter.

I plugged it between the input signal (from the camera to the ATEM), without success

I've plugged in between ATEM HDMI output and monitor input, to no avail.

Am I understanding this correctly: The original HDMI to SDI converter from Blackmagic cannot extract timecode?

These terms are still new to me:
extract the RP-188 from the SDI and output it as LTC.

When looking for a converter/extractor, do I have to use the term RP-188 or LTC or anc???

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