HTML5 Video format conversion with FFmpeg

html5video.sh

#!/bin/sh                        

# Output file for HTML5 video
# Requirements: ffmpeg .6+ with libvorbis, theora and libvpx 
#   ( Install via brew with  `brew install ffmpeg --with-libvorbis --with-libvpx --with-theora` )
# Usage: `./html5video.sh infile.mp4`
# Optional parameters: 
#   `./html5video.sh infile.mp4 -y` to force overwriting existing videos
#   `./html5video.sh infile.mp4 -n 640x480` to force an output size

target_directory='converted'
file=`basename $1`
filename=${file%.*}
filepath=`dirname $1`
destination="$filepath/$target_directory"

# default to no overwrite
overwrite='-n'
[ -n "${2}" ] && overwrite="${2}"

# default to no size parameter
size=''
[ -n "${3}" ] && size="-s ${3}"

if ! test -d "$destination"
then
  mkdir $destination
fi


#######################
# MP4/h264
#######################

ffmpeg -i $1 \
  -acodec libfaac -b:a 96k \
  -codec:v libx264 -profile:v high -preset slower -b:v 750k -maxrate 750k -bufsize 1000k \
  -pix_fmt yuv420p \
  -threads 0 \
  $size $overwrite \
  $destination/$filename.mp4 \
  -loglevel warning -stats


#######################
# Ogg/Theora
#######################

ffmpeg -i $1 \
  -acodec libvorbis -ac 2 -b:a 96k -ar 44100 \
  -vcodec libtheora -qscale:v 8 -b:v 1M \
  $size $overwrite \
  $destination/$filename.ogv \
  -loglevel warning -stats


#######################
# WebM/vp8
#######################

ffmpeg -i $1 \
  -acodec libvorbis -ac 2 -b:a 96k -ar 44100 \
  -b:v 1M \
  $size $overwrite \
  $destination/$filename.webm \
  -loglevel warning -stats