Capture video using ffmpeg with an Intensity Pro and compress using VA-API
Hardware accelerated video capturing using VA-API and a Blackmagic Intensity Pro: H.264 video, FLAC audio. Needs a snapshot ffmpeg build with latest Blackmagic SDK & libva: --enable-decklink --enable-vaapi.
ffmpeg -v verbose -vaapi_device /dev/dri/renderD128 -hwaccel vaapi -format_code ntsc -f decklink -i 'Intensity Pro' -c:a flac -compression_level:a 7 -vf 'format=nv12,hwupload' -c:v h264_vaapi -global_quality 10 -y output.mkv