ffmpeg-webm-normal

#!/bin/bash

# ffmpeg-webm-normal

# Bash script to create webms, easy mode. No audio is included.
# ffmpeg is required.
# See https://github.com/WhatIsThisImNotGoodWithComputers/ffmpeg-webm-scripts for usage.

# Created by WhatIsThisImNotGoodWithComputers (ohgod AT whatisthisimnotgoodwithcomputers DOT com)

#vars
OUTPUT_FILE="output.webm"
FRAMERATE="4500K"
TEMP=`getopt --long -o "i:s:t:o:f:c:a:" "$@"`

#params
eval set -- "$TEMP"
while true ; do
    case "$1" in
        -i )
            INPUT_FILE=$2
            shift 2
        ;;
        -s )
            START_TIME=$2
            shift 2
        ;;
        -t )
            TO_TIME=$2
            shift 2
        ;;
        -o )
            OUTPUT_FILE=$2
            shift 2
        ;;
        -f )
            FRAMERATE=$2
            shift 2
        ;;
        -c )
			#process cropping values
			IFS=',' read -ra ARR <<< "$2"
			NEW_CROP="$((${ARR[2]} - ${ARR[0]})):$((${ARR[3]} - ${ARR[1]})):${ARR[0]}:${ARR[1]}"
		    
		    #add
			if [ -n "$CROPSCALE" ]; then
				CSTEMP="$CROPSCALE"',crop='$NEW_CROP
				CROPSCALE=$CSTEMP
			else
				CROPSCALE='-vf crop='$NEW_CROP
			fi
            shift 2
        ;;
        -a )
			if [ -n "$CROPSCALE" ]; then
				CSTEMP="$CROPSCALE"',scale='$2
				CROPSCALE=$CSTEMP
			else
				CROPSCALE='-vf scale='$2
			fi
            shift 2
        ;;
        *)
            break
        ;;
    esac 
done;

#create webm
echo -e "\033[05;44;33mUsing ffmpeg to encode NORMAL webm\033[0m"
ffmpeg -i "${INPUT_FILE}" -ss $START_TIME -to $TO_TIME -c:v libvpx -crf 4 -b:v $FRAMERATE $CROPSCALE -threads 0 -an $OUTPUT_FILE

exit 0