This script converts all at once pictures and videos to reduce their sizes from one directory to another mantaning the directory structure. Ideal to use when you want to share some pictures or earn some disc space.

media-reducer.sh

#!/bin/bash

clear

#rm -r lasttrip-converted/ # Debug to delete last try

originpath=`readlink -f "$1"`
destinpath=`readlink -f "$2"`

function showhelp {
	echo '
	This script converts all at once pictures and videos to reduce their sizes from one
	directory to another mantaning the directory structure.

	Usage:
		sh media-reducer.sh [option] {origin path} [destination path]		
			[option] optional:
				-h - show this help message
			{origin path}: required if not -h
			[destination path] optional:
				A destination path to put the converted files in;
				If is not passed a sibling directory will be created to do this
					with the name of [origin directory name]-converted

	Note:
	 - Pictures are converted if they are greater than 1.5mb and their type is jpg.
	 - Videos are converted if their width or height are greater than 640 and their type is mp4.
	 - Smaller pictures or jpEg are copied to the relative path
	'
	exit
}

# FIXME: check passed params and assign defaults if not passed
#if [[ -n "$originpath" && "$originpath" == *"-h"* ]]; then
	#showhelp
if  [ ! -n "$originpath" ]; then
	# set defaut origin
	originpath='.'
elif [ ! -d "$originpath" ]; then
	# invalid origin
	echo 'Please set a valid origin path'
	echo
	showhelp
fi
if [ ! -n "$destinpath" ]; then
	# set defaut destination
	destinpath="../`dirname '$originpath'`-converted"
elif [ ! -f "$destinpath" ]; then
	# destination does not exist yet, trying to create
	mkdir -p $destinpath
	[ $? -eq 0 ] || {
		# mkdir error
		echo 'Please set a valid destination path'
		echo
		showhelp
	}
fi

echo origin path $originpath
echo destin path $destinpath

echo
echo
echo 'CONVERT JPG (1 of 4)'
files=`find $originpath -type f -name '*.jpg' -size +1500k`
cmdconvert="convert -strip -interlace Plane -gaussian-blur 1.05 -quality 60% -adaptive-resize 60%"
for i in "${!files[@]}"; do
    len=${#files[@]}
    pc=$((($i * 100) / $len))
    file=`readlink -f "${!i}"`
    filedest="${file/$originpath\//}"
    filedest="$destinpath/$filedest"
    #echo "CONV FILE: $file TO: $filedest" # debug
    echo "$pc% - $i of $len: $file"
    mkdir -p `dirname "$filedest"`
    $cmdconvert $file $filedest
done

echo
echo
echo 'COPY JPG SMALLER FILES (2 of 4)'
files=`find $originpath -type f -name '*.jpg' -size -1500k`
for i in "${!files[@]}"; do
    file=`readlink -f "${!i}"`
    filedest="${file/$originpath\//}"
    filedest="$destinpath/$filedest"
    mkdir -p `dirname "$filedest"`
    echo "smaller jpg: $file"
    #echo "FROM: $file TO: $filedest" # debug
    cp "$file" "$filedest"
done

echo
echo
echo 'COPY JPEG FILES (3 of 4)'
files=`find $originpath -type f -name '*.jpeg'`
for i in "${!files[@]}"; do
    file=`readlink -f "${!i}"`
    filedest="${file/$originpath\//}"
    filedest="$destinpath/$filedest"
    mkdir -p `dirname "$filedest"`
    echo "jpeg: $file"
    #echo "FROM: $file TO: $filedest" # debug
    cp "$file" "$filedest"
done

echo
echo
echo 'CONVERT VIDEOS (4 of 4)'
files=`find $originpath -type f -name '*.mp4'`
cmdconvert="ffmpeg-bar -i input -y -s hd480 -ac 1 -ar 16000 -b:a 80k -c:v vp9 -c:a libopus output"
function timefmt {
  seconds=`echo "round($1 / 1000)" | qalc -t -f -`
  TZ=UTC0 printf "%(%H:%M:%S)T\n" "$seconds"
}

for i in "${!files[@]}"; do
    file=`readlink -f "${!i}"`
    filedest="${file/$originpath\//}"
    filedest="$destinpath/$filedest"
    len=${#files[@]}
    pc=$((($i * 100) / $len))
    duration=`ffprobe -i $file -v quiet -show_entries format=duration -of csv="p=0"`
    # convert duration to ms
    duration=`echo ${duration/./,} "* 1000" | qalc -t -f -`
    size=`du -h $file | cut -d "	" -f 1`
    res=`ffprobe -v error -show_entries stream=width,height -of csv=p=0:s=x $file`
    res=($(echo $res | tr "x" "\n"))
    w=${res[0]}
    h=${res[1]}
    portrait=0

    if [[ w -gt h ]]; then
        res=$w
    else
        res=$h
        portrait=1
    fi

    status="$pc% - $i of $#: $path | ${w}x$h | $size"

    if [[ res -gt 640 ]]; then
        echo "CONVERTING: $status | `timefmt $duration`"
        cmd=${cmdconvert/input/$file}
        cmd=${cmd/output/$filedest}
        mkdir -p `dirname "$filedest"`
        #echo "I: $i FROM: $file TO: $filedest DIRNAME: `dirname "$filedest"`" # debug
        $cmd
    else
        echo "SMALL RES, NOT CONVERT " $status
    fi
done

# TODO: show diff quantities
#echo "PICTURES ${find $originpath -type f -name '*.jp*g' -print | xargs wc -l}"
#echo " ${find $originpath -type f -name '*.jp*g' -print | xargs wc -l}"
#find $originpath -type f -name '*.jp*g' -not -path 'converted' -print | xargs ls -la | wc -l

# NOTE: SHOW VIDEOS SIZES AND RESOLUTIONS
#find . -type f -name '*.mp4' -print | xargs du -sh
#OR (SLOWER):
#find . -type f -name '*.mp4' -exec bash -c 'du -h $1; ffprobe -v error -show_entries stream=width,height -of csv=p=0:s=x $1' bash {} \;

# NOTE: PLAY VIDEOS
#find . -type f -name '*.mp4' -size -10M -exec bash -c 'mpv $1' bash {} \;