51 lines
1.6 KiB
Bash
Executable File
51 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
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# Looping virtual webcam
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set -e
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killall -9 ffmpeg || true
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sleep 2
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# unload virtual
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sudo modprobe v4l2loopback -r -f
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# create 2 virtual webcam
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sudo modprobe v4l2loopback video_nr=21,22 card_label=virtcam1,virtcam2 exclusive_caps=1
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# pipe actual webcam to virtcams
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actualwebcam() {
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ffmpeg -f v4l2 -i /dev/video0 -codec copy -f v4l2 /dev/video21 -f v4l2 /dev/video22 >/dev/null 2>&1 </dev/null &
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echo $!
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}
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ffmpeg -re -stream_loop -1 -i ~/Video/stub.mp4 -f v4l2 -vcodec rawvideo -pix_fmt yuyv422 -framerate 30 /dev/video21 >/dev/null 2>&1 </dev/null &
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SPID=$!
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echo "showing static image, press ENTER for actualwebcam"
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read C
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kill -s INT $SPID
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while true; do
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PID=$(actualwebcam)
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echo piping actual webcam, press ENTER to start recording
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read C
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echo recording for 3 seconds
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ffmpeg -y -i /dev/video22 ~/Video/seq.mp4 >/dev/null 2>&1 </dev/null &
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RECORD_PID=$!
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sleep 3
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kill -s INT $RECORD_PID
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echo recording stopped
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wait "$RECORD_PID" || true
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ffmpeg -y -i ~/Video/seq.mp4 -vf reverse ~/Video/reversed.mp4 >/dev/null 2>&1
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echo reversed clip created
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ffmpeg -y -i ~/Video/seq.mp4 -i ~/Video/reversed.mp4 -filter_complex "[0:v] [1:v] concat=n=2:v=1 [v]" -map "[v]" ~/Video/loop.mp4 >/dev/null 2>&1
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echo looping clip created
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pactl set-source-mute @DEFAULT_SOURCE@ 1
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kill -s INT $PID
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echo webcam stopped, enter looping mode, press [q] to resume webcam
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ffmpeg -re -stream_loop -1 -i ~/Video/loop.mp4 -f v4l2 -vcodec rawvideo -pix_fmt yuyv422 -framerate 30 /dev/video21 >/dev/null 2>&1
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pactl set-source-mute @DEFAULT_SOURCE@ 0
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done
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