Decklink SDI out from Vmix - audio garbled again

Getting started with a Blackmagic product? Ask questions here about setup and installation.
  • Author
  • Message
Offline

Klaus Kranz

  • Posts: 18
  • Joined: Wed Jan 14, 2015 1:31 am

Decklink SDI out from Vmix - audio garbled again

PostTue Sep 13, 2022 4:51 pm

Hi there,
I have another situation where the embedded audio of my SDI signal leaving the decklink becomes garbled after several hours. According to Vmix support this is happening quite frequently with the Decklinks.

This is the external output of Vmix - restarting it does fix the problem but I need a continuous signal. All other audio outputs within Vmix are fine - including streaming, recording, etc.

So it seems to be about the decklink. I tried different models, so it seems to be a general issue. I once had the same issue with a Decklink Duo II in an external Thunderbolt enclosure from Sonnett and it could not be solved.

Then it seems to be specific to the devices that carry the card. I have some other PCs that playback fine.

Any ideas anybody? ;)
Offline
User avatar

Xtreemtec

  • Posts: 5391
  • Joined: Wed Jan 02, 2013 11:48 am
  • Location: The Netherlands

Re: Decklink SDI out from Vmix - audio garbled again

PostWed Sep 14, 2022 8:14 am

I have this too when my decklink 4K pro is used..

I have another decklink HD also in the same system and it does fine up to 1080i50.

So i have done shows were audio was coming from 1 sdi card and video in 4K from another card. :?
Daniel Wittenaar .:: Xtreemtec Media Productions ::. -= www.xtreemtec.nl =-
4K OBV Trailer, ATEM TVS HD, 4M/E Broadcast Studio 4K, Constelation 8K, Hyperdeck Studio 12G, Ursa Broadcast 4K, 4K fiber converters with Sony Control
Offline

Klaus Kranz

  • Posts: 18
  • Joined: Wed Jan 14, 2015 1:31 am

Re: Decklink SDI out from Vmix - audio garbled again

PostFri Sep 16, 2022 9:34 am

I see.
What kind of software were you using?
Did you contact support about it?
Cheers
Offline
User avatar

Xtreemtec

  • Posts: 5391
  • Joined: Wed Jan 02, 2013 11:48 am
  • Location: The Netherlands

Re: Decklink SDI out from Vmix - audio garbled again

PostFri Sep 16, 2022 9:36 am

Also Vmix.
Daniel Wittenaar .:: Xtreemtec Media Productions ::. -= www.xtreemtec.nl =-
4K OBV Trailer, ATEM TVS HD, 4M/E Broadcast Studio 4K, Constelation 8K, Hyperdeck Studio 12G, Ursa Broadcast 4K, 4K fiber converters with Sony Control
Offline
User avatar

Jack Fairley

  • Posts: 1863
  • Joined: Mon Oct 03, 2016 7:58 pm
  • Location: Los Angeles

Re: Decklink SDI out from Vmix - audio garbled again

PostFri Sep 16, 2022 4:03 pm

Is this embedded audio? I have never run into this, but we feed the encoders with video on SDI and audio on XLR via the breakout cable.
Ryzen 5800X3D
32GB DDR4-3600
RTX 3090
DeckLink 4K Extreme 12G
Resolve Studio 17.4.1
Windows 11 Pro 21H2
Offline

Klaus Kranz

  • Posts: 18
  • Joined: Wed Jan 14, 2015 1:31 am

Re: Decklink SDI out from Vmix - audio garbled again

PostTue Sep 20, 2022 4:00 pm

Hi there,
yes, embedded audio. Analog XLR does not make any sense in our case as we have to feed the final signal to a whole bunch of devices (and some of which do not have analog in).
The issue sometimes only appears after many hours of ext. out..
Offline

Samuele Benech

  • Posts: 1
  • Joined: Thu Feb 09, 2023 8:04 am
  • Real Name: Samuele Benech

Re: Decklink SDI out from Vmix - audio garbled again

PostThu Feb 09, 2023 8:10 am

Hi there,
I found similar problems in my setup, have you find any solutions in the meantime?
Offline
User avatar

Xtreemtec

  • Posts: 5391
  • Joined: Wed Jan 02, 2013 11:48 am
  • Location: The Netherlands

Re: Decklink SDI out from Vmix - audio garbled again

PostTue Feb 14, 2023 12:18 pm

Only my 4K pro has it and only on 1 PC. I have a normal decklink in that same PC that is working normal. but 1080i50. So what i do now is send a second feed from that card to the mixer just for audio :?
Daniel Wittenaar .:: Xtreemtec Media Productions ::. -= www.xtreemtec.nl =-
4K OBV Trailer, ATEM TVS HD, 4M/E Broadcast Studio 4K, Constelation 8K, Hyperdeck Studio 12G, Ursa Broadcast 4K, 4K fiber converters with Sony Control

Return to Getting Started

Who is online

Users browsing this forum: No registered users and 38 guests