pod2video.sh

#!/bin/bash

# Usage: ./pod2video.sh someaudio.mp3 mycover.png

# Tools ffmpeg and imagemagic are needed!
# Installation under maxOS using Homebrew: brew install ffmpeg

filename=$1
orig_cover=$2
output_dir=${3:-.}
bgcolor='#000000'

basename=`echo $(basename $filename)`

filename_without_ext=`echo "${basename}"|sed "s/\(.*\)\.\(.*\)/\1/"`

mkdir -p $output_dir

new_cover="${output_dir}/tmp_cover.jpg"

convert $orig_cover -background $bgcolor -gravity Center -resize 1280x720 -extent 1280x720 $new_cover

ffmpeg -loop 1 -r 1 -i $new_cover -i $filename -c:a aac -vcodec libx264 -shortest -pix_fmt yuv420p "$output_dir/$filename_without_ext.mp4"

rm -f $new_cover