The PS3 can't play MKVs over my minidlna server. This script attempts to convert to mp4. I run this in cron.

convert.sh

%!/bin/bash

previous=IFS
IFS=$(echo -en "\n\b")

for file in `find /media/hdd -iname '*.mkv'`
do
  if [ ! -f "$file.mp4" ];
  then
    echo "Converting $file..."
    avconv -i "$file" -codec copy -loglevel warning "$file.mp4"
  fi
done

IFS=previous