4channel input capture and save with DeckLink Quad HDMI Reco

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ywlee623

  • Posts: 1
  • Joined: Tue Sep 17, 2019 5:53 am
  • Real Name: youngwoo lee

4channel input capture and save with DeckLink Quad HDMI Reco

PostTue Sep 17, 2019 6:28 am

Hi

I'd like to capture and save 4 channel input image with DeckLink Quad HDMI Recorder.
I made program that can capture and transform image into OpenCV Mat type.

First I tried to transform that program with 4 thread but that program doen't have synchronized frame.
So I'm trying to use synchronized capture group API.

I have a problem using API. I got a pointer of IDeckLinkProfileAttributes and then checked BMDDeckLinkSupportsSynchronizeToCaptureGroup flag. however flag is not true.

Could you teach me how to use synchronized capture group API?
Could you recommend the better method for saving each 4 channel image?

Thank you.
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Cameron Nichols

Blackmagic Design

  • Posts: 212
  • Joined: Mon Sep 04, 2017 4:05 am

Re: 4channel input capture and save with DeckLink Quad HDMI

PostTue Sep 24, 2019 3:23 am

Hi Youngwoo,

The Synchronized Capture feature is applicable for SDI not HDMI, it is intended to use where all inputs are locked to the same reference timing.

The DeckLink Quad HDMI Recorder treats all inputs as independent devices, no facility exists to lock the reference timing of all inputs.

Regards
Cameron

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