vrcencode-batch.sh

#!/usr/bin/env bash
set -e
re='([0-9]+) - .+' # change as appropriate
for i in "$1"*.mkv; do
  #echo "$i"
  if [[ "$i" =~ $re ]]; then
    num=${BASH_REMATCH[1]}
    #echo "$i : $num"
    out="$2$num.mp4"
    if [ ! -f $out ]; then
      vrcencode.sh "$i" "$out"
    fi
  fi
done