Mass convert name and coding of subtitles

subtitles.sh

#!/usr/bin/env bash
# Converts subtitles
# from> grimm.301.hdtv-lol.srt
# to> Grimm.S03E01.HDTV.x264-LOL.srt

season=3
num_episodes=22

for i in `seq -w 1 $num_episodes`; do
        fr="grimm.${season}${i}.hdtv-lol"
        to="Grimm.S0${season}E${i}.HDTV.x264-LOL"
        if [ -f "$to".mp4 ]; then
                if [ -f "$fr.srt" ]; then
                        echo "Convert ${fr}.srt to ${to}.srt";
                        iconv -f "windows-1250" -t "UTF-8" "${fr}.srt" -o "${to}.srt"
                elif [ -f "$to.srt" ]; then
                        echo "Already done $to.srt"
                        iconv -f "windows-1250" -t "UTF-8" "${fr}.srt" | sponge "${fr}.srt"
                fi;
        else
                echo "Video non exist: $to.mp4"
        fi;
done;