#!/bin/sh

# Origins:
#  http://diveintohtml5.org/video.html
#  http://camendesign.com/code/video_for_everybody

# Possible flashplayers:
#  http://www.internetmarketingnotes.com/2010/07/free-embeddable-flash-video-flv-players-for-commercial-use/

set -e

# input filename (mandatory)
infile="$1"; shift
filebase=$(echo "$infile" | perl -pe 's/\.[^.]*//')

# output size in WIDTHxHEIGHT (mandatory)
# TODO: Make optional with input size as default
# TODO: Make each half of size optional with default resolved from input aspect ratio
size="$1"; shift
width=$(echo "$size" | perl -pe 's/[^x]*x//')
height=$(echo "$size" | perl -pe 's/x[^x]*//')
heightplus=${height:+$(($height+4))}

# fallback graphics title
# TODO: implement --title option (set it in environment for now)
title=${title:-$filebase}

# TODO: Check and fail if all needed tools are not available

## Theora/Vorbis/Ogg
ffmpeg2theora --videobitrate 200 --max_size "$size" --output "$filebase.ogv" "$infile"

## H.264/AAC/MP4
HandBrakeCLI --preset "iPhone & iPod Touch" --vb 200 ${width:+--maxWidth "$width"} ${height:+--maxHeight "$height"} --two-pass --turbo --optimize --input "$infile" --output "$filebase.mp4"

## VP8/Vorbis/WebM
! ffmpeg -codecs | grep -iw vp8 || webm=yes
# FIXME: check and fail if logfiles exist already
[ -z "$webm" ] || ffmpeg -pass 1 -passlogfile "$infile" -threads 16  -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -i "$infile" -vcodec libvpx -b 204800 -s "$size" -aspect 4:3 -an -f webm -y NUL
[ -z "$webm" ] || ffmpeg -pass 2 -passlogfile "$infile" -threads 16  -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -i "$infile" -vcodec libvpx -b 204800 -s "$size" -aspect 4:3 -acodec libvorbis -ac 2 -y "$filebase.webm"
rm "$infile"-*.log

## JPEG preview
ffmpegthumbnailer -s0 -i "$filebase.ogv" -o "$filebase.jpg"

# TODO: resolve flash player to use
[ -z "$flashplayer" ] || flash=yes

cat >"$filebase.html" <<EOF
<!-- Video for Everybody, Kroc Camen of Camen Design -->
<video width="$width" height="$height" preload controls>
<source src="$filebase.mp4"  type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"' />
<source src="$filebase.ogv"  type='video/ogg; codecs="theora, vorbis"' />
${webm:+<source src="$filebase.webm" type='video/webm; codecs="vp8, vorbis"' />
}${flash:+<object width="$width" height="$heightplus" type="application/x-shockwave-flash" data="$flashplayer.swf">
<param name="movie" value="$flashplayer.swf" />
<param name="flashvars" value="image=$filebase.jpg&amp;file=$filebase.mp4" />
}<img src="$filebase.jpg" width="$width" height="$height" alt="$title"
 title="No video playback capabilities, please download the video below" />
${flash:+</object>
}</video>
<p><strong>Download Video:</strong>
open format <a href="$filebase.ogv">Ogg</a>,
${webm:+open format <a href="$filebase.webm">WebM</a>,}
closed Format <a href="$filebase.mp4">MP4</a>.
</p>
EOF