hstack

#!/bin/bash
#: hstack
#: Copyright (c) 2024 DankoScientific
clear #: clean slate, bayyybeeeeeee!
keep_it_goin() { # this is being used as a debugging pause
  echo ""
  read -e -p "Y to continue / N to try again " -n 2 -r
  echo ""
  if [[ ! $REPLY =~ ^[Yy]$ ]]; then
    exec "$0"
  fi
}

final_destination="/PATH/TO/SAVE/FILE/"
left=$1
right=$2
get_four=$(printf "%s\n" "$left" "$right")

time_compare() {
    shortest_duration=999999.999999
    for i in $get_four; do
        duration=$(ffprobe -v error -show_entries format=duration -of default=nw=1:nk=1 $i | cut -d '.' -f 1,2)
        echo "$i" | sed 's/^/-i /'
        if [ $(echo "$duration < $shortest_duration" | bc -l) -eq 1 ]; then
            shortest_duration="$duration"
        fi
    done
    #echo "$shortest_duration"
}
get_fnames() {
    time_compare
    echo $shortest_duration
}
get_bitrate() {
    bit_vid=$(find . -type f -iname 'out*.mp4' -printf %"f\n" | head -n 1)
    audio_bitrate=$(ffprobe -v error -show_entries format=bit_rate -of default=nw=1:nk=1 -i "$bit_vid")
    echo "$audio_bitrate"
}
show_menu() {
    echo -n "## NAME: "
    IFS= read -r scene_name
    echo ""
}
end_of_file=$(date +%s | cut -b 7-10) # adds 4 numbers to the end of file based on date in seconds
use_four=$(get_fnames) # used to run time_compare
use_four1=$(echo "$use_four" | head -n 2) # this removes shortest_duration out for the FFMPEG part below
use_fade=$(echo "$use_four" | cut -d " " -f1 | tail -n 1) # takes shortest_duration and then uses to subtract 1 below to fade out
use_bit=$(get_bitrate) # get audio bitrate

echo "+------+------+"
echo "|      |      |"
echo "+   h-stack   +"
echo "|      |      |"
echo "+------+------+"
echo ""
echo "These files: "
echo "$use_four"

keep_it_goin
show_menu

err="-v 16 -stats -hwaccel vdpau"
border_left="fillborders=right=2:mode=fixed:color=#000000@0.25"
border_right="fillborders=left=2:mode=fixed:color=#000000@0.25"
font_loc="fontfile=/PATH/TO/FONT/FILE:fix_bounds=true"
font_opt="fontsize=h/38:fontcolor=white:x=3:y=(h-th-2):borderw=1:bordercolor=#0091FF@0.5:enable='between(t,0,5)'" #: bottom left for 5 sec
text_opt="text='Your Text Here!'"
text_draw="drawtext=$font_loc:$font_opt:$text_opt"
crop_middle="crop=iw/2:ih:'(iw-ow)/2':0"
stack="hstack=inputs=2:shortest=1"
vcodec="-c:v libx264 -crf 21 -preset fast -tune film -pix_fmt yuv420p -movflags +faststart"
acodec="-c:a aac -b:a $use_bit"
sardar="setsar=w/h,setdar=w/h"
fade_duration="$(echo "$use_fade - 1" | bc -l)"
fadeout="fade=out:st=$fade_duration:d=1"
audio_all="amerge=inputs=2,afade=t=out:st=$fade_duration:d=1"
final_name="splitscreen-$scene_name-$end_of_file.mp4"

use_ffmpeg() {
  ffmpeg $err \
    $use_four1 \
    -filter_complex " \
        [0:v]$crop_middle,$border_left[left]; \
        [1:v]$crop_middle,$border_right[right]; \
        [left][right]$stack,$sardar,$text_draw,$fadeout[out]; \
        [0:a][1:a]$audio_all[a]" \
            -map "[out]" -map "[a]" $vcodec $acodec $final_name
}

play_file() {
    read -e -p "Play $final_name? Y/n " -n 3 -r
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        play $final_name 0 1
        play_file
    else
        move_file
        return
    fi
}
delete_file() {
    read -e -p "Delete files? Y/n " -n 3 -r
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        rm $use_four1
        return
    else
        move_file
        return
    fi
}
move_file() {
    read -e -p "Move to $final_destination Y/n " -n 3 -r
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        rsync --remove-source-files --info=progress2 $final_name $final_destination/$final_name
        delete_file
    else
        play_file
        return
    fi
}

use_ffmpeg
play_file