How to stop sending blackframe when there is no input

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parithi

  • Posts: 7
  • Joined: Tue Feb 13, 2018 7:05 am
  • Real Name: Elamparithi Shanmugam

How to stop sending blackframe when there is no input

PostFri Jul 19, 2019 2:02 pm

Hi,

I am using MiniMonitor for SDI output. But when there is no iput MiniMonitor is keep on sending blckframes.
Is there a way we can stop sending blackframes when there is no iput?

Setup :

Desktop Video version 10.8.2
OS : cent os 7.5

Regards,
Parithi
Regards,
Parithi
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Cameron Nichols

Blackmagic Design

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  • Joined: Mon Sep 04, 2017 4:05 am

Re: How to stop sending blackframe when there is no input

PostWed Jul 24, 2019 4:31 am

Hi Parithi,

When the DeckLink Mini Monitor has its video output disabled, it can be configured to either send out black frames or to send out freeze frames (display the last frame scheduled). You can set this value either via the Video Output tab of Desktop Video Setup application, or programmatically by calling method IDeckLinkConfiguration::SetInt() [1] with configuration ID bmdDeckLinkConfigVideoOutputIdleOperation [2] and value either bmdIdleVideoOutputBlack or bmdIdleVideoOutputLastFrame [3].

In addition, the DeviceConfigure SDK sample demonstrates how to set video output idle configuration.

Regards
Cameron

References (DeckLink SDK Manual)
[1] 2.5.15.3 IDeckLinkConfiguration::SetInt method
[2] 2.7.18 DeckLink Configuration ID
[3] 2.7.41 Idle Video Output Operation
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parithi

  • Posts: 7
  • Joined: Tue Feb 13, 2018 7:05 am
  • Real Name: Elamparithi Shanmugam

Re: How to stop sending blackframe when there is no input

PostWed Aug 14, 2019 12:09 pm

Cameron,

Thanks for the reply. Is there a way we can do the samething using v4l2 api?
Regards,
Parithi

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