dmenurecord

 apt install dmenu i3 ffmpeg i3blocks

touch ~/scripts/dmenurecord

nano dmenurecord

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#!/bin/sh

# Usage:

# `record`: Ask for recording type via dmenu

# `record screencast`: Record both audio and screen

# `record video`: Record only screen

# `record audio`: Record only audio

# `record kill`: Kill existing recording

#

# If there is already a running instance, user will be prompted to end it.

updateicon() { \

    echo "$1" > /tmp/recordingicon

    pkill -RTMIN+9 i3blocks

    }

killrecording() {

    recpid="$(cat /tmp/recordingpid)"

    # kill with SIGTERM, allowing finishing touches.

    kill -15 "$recpid"

    rm -f /tmp/recordingpid

    updateicon ""

    pkill -RTMIN+9 i3blocks

    # even after SIGTERM, ffmpeg may still run, so SIGKILL it.

    sleep 3

    kill -9 "$recpid"

    exit

    }

screencast() { \

    ffmpeg -y \

    -f x11grab \

    -framerate 60 \

    -s $(xdpyinfo | grep dimensions | awk '{print $2;}') \

    -i :0.0 \

    -f alsa -i default \

    -r 30 \

     -c:v libx264rgb -crf 0 -preset ultrafast -c:a flac \

    "$HOME/screencast-$(date '+%y%m%d-%H%M-%S').mkv" &

    echo $! > /tmp/recordingpid

    updateicon "⏺️🎙️"

           }

video() { ffmpeg \

    -f x11grab \

    -s $(xdpyinfo | grep dimensions | awk '{print $2;}') \

    -i :0.0 \

     -c:v libx264 -qp 0 -r 30 \

    "$HOME/video-$(date '+%y%m%d-%H%M-%S').mkv" &

    echo $! > /tmp/recordingpid

    updateicon "⏺️"

    }

webcamhidef() { ffmpeg \

    -f v4l2 \

    -i /dev/video0 \

    -video_size 1920x1080 \

    "$HOME/webcam-$(date '+%y%m%d-%H%M-%S').mkv" &

    echo $! > /tmp/recordingpid

    updateicon "🎥"

    }

webcam() { ffmpeg \

    -f v4l2 \

    -i /dev/video0 \

    -video_size 640x480 \

    "$HOME/webcam-$(date '+%y%m%d-%H%M-%S').mkv" &

    echo $! > /tmp/recordingpid

    updateicon "🎥"

    }

audio() { \

    ffmpeg \

    -f alsa -i default \

    -c:a flac \

    "$HOME/audio-$(date '+%y%m%d-%H%M-%S').flac" &

    echo $! > /tmp/recordingpid

    updateicon "🎙️"

    }

askrecording() { \

    choice=$(printf "screencast\\nvideo\\naudio\\nwebcam\\nwebcam (hi-def)" | dmenu -i -p "Select recording style:")

    case "$choice" in

        screencast) screencast;;

        audio) audio;;

        video) video;;

        webcam) webcam;;

        "webcam (hi-def)") webcamhidef;;

    esac

    }

asktoend() { \

    response=$(printf "No\\nYes" | dmenu -i -p "Recording still active. End recording?") &&

    [ "$response" = "Yes" ] &&  killrecording

    }

case "$1" in

    screencast) screencast;;

    audio) audio;;

    video) video;;

    kill) killrecording;;

    *) ([ -f /tmp/recordingpid ] && asktoend && exit) || askrecording;;

esac

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https://pastebin.com/yxEHip3T

i3 config

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 set $stoprec --no-startup-id ~/scripts/dmenurecord kill

bindsym $mod+Print exec --no-startup-id ~/scripts/dmenurecord

bindsym $mod+Delete exec $stoprec