#!/bin/bash
# screenrex
# Make sure your ffmpeg is compiled with x264 and x11grab. 
# xrandr must also be on path. notify-send is optional.

set -x

pathtoffmpeg="$HOME/source/ffmpeg"
destination="$HOME/videos/Screencasts"

    # random word dictionary function
    randomword()  {
        dict="/usr/share/dict/words"
        shuf -n1 "$dict" | tr -dc '[:alnum:]\n\r' | tr '[:upper:]' '[:lower:]'
    }
    word=$(randomword)
    
    # if dict gets us null length then replace with something else
    [ -z "$word" ] && word="$HOSTNAME"
    [ -z "$word" ] && word="screencast"

    # screencast without audio
    fps="25" # you can change this
    screenres=$(xrandr | grep '*' | cut -c 4-15)

    echo $screenres "," $fps "fps" "," "$word"

    # a lil sleep before recording
    sleep 5
    
    notify-send "RECORDING" -u critical -a "$word" -t 10 2>/dev/null
    # use ffmpeg compiled with x11grab
    "$pathtoffmpeg/"ffmpeg -hide_banner -f x11grab -r $fps -s $screenres -i :0.0 \
    -vcodec libx264 -preset ultrafast -tune fastdecode -pix_fmt yuv420p -crf 30 -an -y \
    "$destination/$(date +"%m%d%Y").$word.$(date +"%H%M")".mp4 -loglevel panic -stats
    # $(date +"%m%d%Y_%H%M%S_$HOSTNAME")_
    # sleep 1
    
    
    # -crf 21
    # thunar $destination