Add First Script - Video Compression (#40)

* Script is working well. Maybe not its final resting place but adding it to the repo here for now.

* Add Signal to favorites after Delta Chat.

* Fix the a and v parameters never being used.

* New file to copy all scripts to /usr/local/bin/.

* Call the new file which installs everything under files/scripts/.

files/scripts/compress-video.sh

@@ -0,0 +1,89 @@
+#!/bin/bash
+# 2023-06-13 Hyperling
+# Compress a video to good-enough quality for high quality streaming.
+
+DIR=`dirname $0`
+PROG=`basename $0`
+if [[ $DIR == '.' ]]; then
+	DIR=`pwd`
+fi
+echo "Running $DIR/$PROG"
+
+## Functions
+function usage {
+	cat <<- EOF 
+		Reduce the filesize of a video file to make it stream well. It also
+		  helps with the file size for placing the file into a backup system.
+		
+		Parameters:
+		  -f input : The input file or folder with which to search for video files. 
+		             If nothing is provided, current directory (.) is assumed.
+		  -v bitrate : The video bitrate to convert to, defaults to 2000k.
+		  -a bitrate : The audio bitrate to convert to, defaults to 128k.
+		  -h : Display this help messaging.
+	EOF
+	exit $1
+}
+
+## Parse Input
+while getopts ":f:v:a:h" opt; do
+	case $opt in
+		f) 
+			input="$OPTARG"
+			;;
+		v) 
+			video_bitrate="$OPTARG"
+			;;
+		a) 
+			audio_bitrate="$OPTARG"
+			;;
+		h) 
+			usage 0
+			;;
+	esac
+done
+
+if [[ -z $input && ! -z $1 ]]; then
+	echo "WARNING: Program was not passed a file. Using input 1."
+	input=$1
+else
+	echo "WARNING: Program was not passed a file. Using current directory."
+	input='.'
+fi
+
+if [[ -z $video_bitrate ]]; then
+	video_bitrate='2000k'
+fi
+
+if [[ -z $audio_bitrate ]]; then
+	audio_bitrate='128k'
+fi
+
+## Other Variables
+filename_flag='compressed.'
+
+## Main Loop
+ls $input | while read file; do
+	## Exception Checks
+	if [[ $file != *'.mp4' && $file != *'.mpeg' ]]; then
+		echo "Skipping $file, not an MP4 or MPEG."
+		continue
+	fi
+
+	# Build the new filename to signify it is different thn the original.
+	extension=${file##*.}
+	newfile=${file//$extension/$filename_flag$extension}
+
+	if [[ $file == *"$filename_flag"* || -e $newfile ]]; then
+		echo "Skipping $file, already compressed."
+		continue
+	fi
+
+	# Convert the file.
+	echo "Converting $file to $newfile."
+	ffmpeg -nostdin -hide_banner -loglevel quiet \
+			-i $file -b:v $video_bitrate -b:a $audio_bitrate \
+			$newfile
+done
+
+exit 0