ffmpeg-webm-grab

#!/bin/bash

# ffmpeg-webm-grab

# Bash script to create webms from grabbing screen. No audio is included.
# ffmpeg is required.
# xrectsel is required. https://github.com/lolilolicon/FFcast2/blob/master/xrectsel.c
# See https://github.com/WhatIsThisImNotGoodWithComputers/ffmpeg-webm-scripts for usage.

# Created by WhatIsThisImNotGoodWithComputers (ohgod AT whatisthisimnotgoodwithcomputers DOT com)

#vars
OUTPUT_FILE="grab.webm"
FRAMERATE="2500K"
TEMP=`getopt --long -o "i:s:t:o:f:d:" "$@"`
DELAY=10

#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
        ;;
        -d )
            DELAY=$2
            shift 2
        ;;
        *)
            break
        ;;
    esac 
done;

X11GRAB=$(xrectsel "-f x11grab -s %wx%h -i :0.0+%x,%y") || exit -1
echo $X11GRAB;

echo -e "\033[05;44;33mRecording in $DELAY seconds (-d). Press q to stop recording.\033[0m"
echo 
for (( i=$DELAY; i>0; --i )) ; do
    echo $i
    sleep 1
done

ffmpeg ${X11GRAB} -c:v libvpx -an -b:v $FRAMERATE -threads 0 -tune zerolatency -crf 0 -preset ultrafast $OUTPUT_FILE

exit 0