web-video-conversion.sh

web-video-conversion.sh

#!/bin/bash

IN=$1
OUT="`echo "$IN" | cut -d'.' -f1`-web"

rm -f ffmpeg2pass*

# 1/3 of 1920x1090
WIDTH=1280
HEIGHT=720

# webm
if [ ! -f "${OUT}.webm" ]; then
    ffmpeg -i ${IN} -c:v libvpx -pass 1 -an -f rawvideo -y /dev/null # Generates ffmpeg2pass-0.log
    ffmpeg -i ${IN} -c:v libvpx -pass 2 -f webm -s ${WIDTH}x${HEIGHT} -b:v 1000k -crf 10 -c:a libvorbis -aq 4 -y ${OUT}.webm    
else
    echo "${OUT}.webm exists, skipping"
fi

# mp4
if [ ! -f "${OUT}.mp4" ]; then
    ffmpeg -i ${IN} -hide_banner -loglevel error -stats -codec:v libx264 -threads 0 -profile:v main -preset slow -b:v 1000k -maxrate 1000k -bufsize 2000k -pass 1 -f mp4 -y /dev/null
    ffmpeg -i ${IN} -hide_banner -loglevel error -stats -codec:v libx264 -threads 0 -profile:v main -preset slow -b:v 1000k -maxrate 1000k -bufsize 2000k -codec:a aac -b:a 128k -pass 2 -f mp4 -s ${WIDTH}x${HEIGHT} -y ${OUT}.mp4
else
    echo "${OUT}.mp4 exists, skipping"
fi

# ogg (if you want to support older Firefox)
if [ ! -f "${OUT}.ogv" ]; then
    ffmpeg2theora ${IN} -o ${OUT}.ogv -x ${WIDTH} -y ${HEIGHT} --videoquality 5 --audioquality 1 --audiobitrate 128 --frontend
else
    echo "${OUT}.ogv exists, skipping"
fi

# still
if [ ! -f "${OUT}.jpg" ]; then
    eval "$(ffprobe -v error -of flat=s=_ -show_entries format=duration ${IN})"
    ffmpeg -ss "$(echo "$format_duration/2" | bc)" -i ${IN} -s ${WIDTH}x${HEIGHT} -q:v 2 -frames:v 1 ${OUT}.jpg
else
    echo "${OUT}.jpg exists, skipping"
fi