Preview and Record 1080i50 videos ffmpeg

Hi Friends,
I am trying to record video From intensity Shuttle using ffmpeg.

1. Video Input - HDMI
2. Video Standard - HD 1080i50

I had completed Previewing video from Intensity Shuttle device. While i am trying to record videos while Previewing which Shows error (Can nor Enable Video Input).

My ffmpeg code :
ffmpeg -format_code Hi50 -f decklink -i 'Intensity Pro' -c:a copy -c:v copy output.avi
Preview Off : Recording Succesffully.
Preview On: Can not Enable Video Input (ERROR)

And aslo, I want to know about How to get rawvideo from decklink device using ffmpeg (1080i50).

Thanks in advance.

[Cameron Nichols]

Hi Kamaraj,

From your description, I believe you have 2 applications attempting to access the IDeckLinkInput object interface. Because your preview application already has enabled input, then FFmpeg cannot also access the input at the same time, hence why call to IDeckLinkInput::EnableVideoInput method fails.

You should keep your preview and capture in a single application, or if you application allows for, disable the input on your preview application before starting FFmpeg capture.

Regards
Cameron

Thanks for responding,
Is there any way to get raw video from Intensity Shuttle.