Created
July 9, 2019 14:56
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Streaming screen capture with camera at corner and playback with microphone input. Assuming first graphic card with kms support, camera available and pulseaudio.
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| #!/bin/sh | |
| #required for kmsgrab | |
| setcap cap_sys_admin+ep /usr/bin/ffmpeg | |
| #specify streamurl provided by streaming platform | |
| #streamurl='rtmp://a.rtmp.youtube.com/live2/xxxx-xxxx-xxxx-xxxx' | |
| streamurl= | |
| #specify loopback pulseaudio device | |
| #loopback=alsa_output.pci-0000_00_1f.3.analog-stereo.monitor | |
| loopback= | |
| #specify microphone pulseaudio device | |
| #microphone=alsa_input.pci-0000_00_1f.3.analog-stereo | |
| microphone= | |
| pactl load-module module-null-sink sink_name=mix | |
| pactl load-module module-loopback source=$loopback sink=mix | |
| pactl load-module module-loopback source=$microphone sink=mix | |
| ffmpeg -thread_queue_size 512 -f kmsgrab -i - -thread_queue_size 512 -f v4l2 -i /dev/video0 -thread_queue_size 512 -f pulse -ac 2 -i mix.monitor -vaapi_device /dev/dri/renderD128 -filter_complex "[0:v]hwmap=derive_device=vaapi,hwdownload[screen];[screen][1:v]overlay=W-w:H-h,hwupload,scale_vaapi=w=1280:h=720:format=nv12" -c:v h264_vaapi -c:a libfdk_aac -profile:a aac_he_v2 -f flv $streamurl | |
| pactl unload-module module-loopback | |
| pactl unload-module module-null-sink |
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