HDMI to USB Video Capture Card 1080P: http://ebay.us/Mv0snK (eBay Affiliate)
HDMI to USB Video Capture Card 1080P (Amazon Affiliate)
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4K 1×2 HDMI Splitter by OREI – 1 Port to 2 HDMI Display Duplicate/Mirror – Powered Splitter Ver 1.4 Certified for Full HD 1080P High Resolution & 3D Support (One Input To Two Outputs) – USB Powered (Amazon Affiliate)
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CanaKit Raspberry Pi 4 (4GB) Starter Kit (Amazon Affiliate)
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This video builds upon my previous video “Cheap HDMI USB Capture Card on a Raspberry Pi 4”: https://youtu.be/O1NqziPRFVQ
List Devices
v4l2-ctl --list-devices
List PulseAudio Sources
ffmpeg -sources pulse
Record Two Streams at Once
ffmpeg \ -f v4l2 -thread_queue_size 1024 -input_format mjpeg -video_size 1920x1080 -framerate 30 -i /dev/video0 \ -f pulse -thread_queue_size 1024 -i alsa_input.usb-MACROSILICON_USB_Video-02.analog-stereo \ -f v4l2 -thread_queue_size 1024 -input_format mjpeg -video_size 1920x1080 -framerate 30 -i /dev/video2 \ -f pulse -thread_queue_size 1024 -i alsa_input.usb-MACROSILICON_USB_Video-02.analog-stereo.2 \ -codec copy -copytb 1 \ -map 0:0 -map 1:0 stream1.avi \ -codec copy -copytb 1 \ -map 2:0 -map 3:0 stream2.avi