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External Output not working after Shutdown
Rank: Newbie
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Joined: 11/29/2016(UTC) Posts: 7   Location: Sao Paulo, BR Thanks: 1 times
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We have two systems with vMix version 27.0.0.81 and BMD Duo2 with driver version 12.8.1. After latest Windows Updates, powering on after shutdown and opening a vMix project, the mapped SDI output to External don't work at first, requiring disabling an re-enabling External, sometimes 2 times because of audio stuttering. After this procedure, it will work as usual, even restarting Windows without power-off.
The External Output is set to activate automatically as startup in settings, and used to work before updates. Somebody with similar setup can confirm this behaviour? Already tried restoring Windows with no effect.
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Rank: Member
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Joined: 7/16/2021(UTC) Posts: 22  Location: Legnano Thanks: 2 times
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Originally Posted by: leotiago  We have two systems with vMix version 27.0.0.81 and BMD Duo2 with driver version 12.8.1. After latest Windows Updates, powering on after shutdown and opening a vMix project, the mapped SDI output to External don't work at first, requiring disabling an re-enabling External, sometimes 2 times because of audio stuttering. After this procedure, it will work as usual, even restarting Windows without power-off.
The External Output is set to activate automatically as startup in settings, and used to work before updates. Somebody with similar setup can confirm this behaviour? Already tried restoring Windows with no effect. I think it's a very common problem, personally it often happens that I have to deactivate and activate external even just to output the video not embedded with audio. You could create a specific shortcut and manage it with a web controller if necessary.
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Rank: Newbie
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Joined: 11/29/2016(UTC) Posts: 7 Location: Sao Paulo, BR Thanks: 1 times
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Originally Posted by: miro_lee Originally Posted by: leotiago We have two systems with vMix version 27.0.0.81 and BMD Duo2 with driver version 12.8.1. After latest Windows Updates, powering on after shutdown and opening a vMix project, the mapped SDI output to External don't work at first, requiring disabling an re-enabling External, sometimes 2 times because of audio stuttering. After this procedure, it will work as usual, even restarting Windows without power-off.
The External Output is set to activate automatically as startup in settings, and used to work before updates. Somebody with similar setup can confirm this behaviour? Already tried restoring Windows with no effect. I think it's a very common problem, personally it often happens that I have to deactivate and activate external even just to output the video not embedded with audio. You could create a specific shortcut and manage it with a web controller if necessary. Yes, I found other cases here in the forum, what brought my attention was that it was working fine before updates. Regards
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Rank: Newbie
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Joined: 10/7/2019(UTC) Posts: 3  Location: Den Haag Was thanked: 1 time(s) in 1 post(s)
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Any progress on this issue? We have 2 VMIX'es that still have this issue frequently... Hope anyone has solved this?
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Rank: Advanced Member
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Joined: 11/14/2012(UTC) Posts: 319 Location: Finland Thanks: 200 times
Was thanked: 19 time(s) in 17 post(s)
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Originally Posted by: Techniek Omroep West Any progress on this issue? We have 2 VMIX'es that still have this issue frequently... Hope anyone has solved this? Do you have the latest BMD Desktop Video drivers installed (V15.3.1, 15 Dec 2025)?
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Rank: Advanced Member
Groups: Registered
Joined: 11/14/2012(UTC) Posts: 319 Location: Finland Thanks: 200 times
Was thanked: 19 time(s) in 17 post(s)
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Originally Posted by: Techniek Omroep West Any progress on this issue? We have 2 VMIX'es that still have this issue frequently... Hope anyone has solved this? Using the latest vMix and have again encountered this issue: External Output not working straight away, must Start - Stop - and then once more Start External to actually make vMix to output! This issue seems to happen with BMD products that are In and Out capable, like "Decklink Duo 2", "DeckLink 8K Pro" and "DeckLink SDI Micro" I have the latest drivers installed from BMD. This issue should now be investigated to the core as it is so fundamental function and while not working reliable it is now jeopardizing entire high-end productions with professional SDI workflows!
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