Start recording trigger

Hi, I just started using OBS Studio and I have a question.
I use OBS to record from an HDMI source, I have an HDMI capture card and everything works fine.
My problem is that I should start playback on my HDMI source and start recording on OBS studio synchronously.
The only way I have found is to start the recording on OBS studio first and then start my HDMI source, and at the end of the recording post-produce the video file to eliminate the first few seconds.

I wanted to ask, is there a way to start recording on OBS when the first video frame arrives, or rather when there is the first movement on the HDMI signal?

Thanks in advance.
 
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