Convert all MKV files in the current directory and make them mp4 compatible with Ipad

convert.sh

#!/bin/bash

# Iterate through all .mkv files in the current directory
for file in *.mkv; do
    if [[ -f "$file" ]]; then
        # Remove spaces and emoji characters from the file name
        new_name=$(echo "$file" | sed -e 's/ /_/g' -e 's/[^[:alnum:]._\-]//g')
        if [[ "$new_name" != "$file" ]]; then
            mv "$file" "$new_name"
            echo "Renamed file: $file -> $new_name"
            file="$new_name"
        fi

        # Convert the file to iPad-compatible format using FFmpeg
        output_file="${file%.*}.mp4"
        ffmpeg -i "$file" -c:v h264 -crf 23 -preset medium -c:a aac -b:a 128k "$output_file"
        echo "Converted file: $file -> $output_file"
    fi
done