Compress videos each night. NEVER KILL ffmpeg, otherwise you will lose files.

README

Each file inside incomming folder would be converted into HVEC/OPUS, with same folder structure into output folder (will be created near).

convert.start.bash

if [ -f converting.lock ]; then
  read -r pid < converting.lock
  if kill -0 $pid; then
    kill -CONT $pid
    exit
  else
    rm converting.lock
  fi
fi

bash convert_vps.bash

convert.stop.bash

if [ -f converting.lock ]; then
  read -r pid < converting.lock

  echo "PID: $pid";
  if kill -0 $pid; then
    kill -STOP $pid
    exit
  fi
fi

convert_vps.bash

if [ -f converting.lock ]; then
  echo "Converting lock is presend. Abort"
  exit
fi

echo $$ >  converting.lock

files=`du -a incomming/* | sort -n | head -n 30 | cut -f 2`

while read line; do
    echo "CONVERTING $line"

    file=${line#incomming}
    resfile=`echo $file | sed -e 's/\.\w*$/\.opus\.x265\.mkv/'`

    busy=`lsof -t "incomming/$file"`
    rmdir "incomming/$file"
    if [ ! -z "$busy" ]; then
      continue;
    fi;

    processing=".processing$resfile"

    result="outcomming$resfile"

    echo $processing $result

    mkdir -p -- "$(dirname -- "$result")"
    mkdir -p -- "$(dirname -- "$processing")"

    cp $file $result # if ffmpeg would fail
    rm "$processing"
    res=`nice -n 9001 ffmpeg -d -i "$line" -c:v libx265 -crf 28 -c:a libopus -b:a 50k -threads 1 "$processing" & echo $! > converting.lock`
    mv "$processing" "$result"
    echo "done: $line"
    rm "$line"
done <<< "$files"

rm converting.lock