play

#!/bin/bash
# Params:
#   $1 - Address (URL)
#   $2 - From (pixels) [optional, default=320]
#   $3 - To (pixels)   [optional, default=768]
#   $4 - seconds       [optional, default=10]

# Deal with params
if [ "$1" = "" ]; then
	echo Please provide an address.
	exit 1
else
	address=$1
fi
if [ "$2" = "" ]; then
	from=320
else
	from=$2
fi
if [ "$3" = "" ]; then
	to=768
else
	to=$3
fi
if [ "$4" = "" ]; then
	seconds=10
else
	seconds=$4
fi
if [ $to -lt $from ]; then
	temp=$from
	from=$to
	to=$temp
fi

# Framerate
frames=$((to - from))
framerate=$((frames / seconds))

# Script
echo Generating a ${seconds}s movie for $address from ${from}px to ${to}px.

# Remove old files
rm -f video/*
rm -f video.mp4
mkdir -p video

# Run screenshots
phantomjs play.js $1 video/ $2 $3

# Create video
ffmpeg -r $framerate -b 1800 -i video/img%04d.png video.mp4