C# - MP3 Tag Renaming
16 Dec 2013After a recent migration away from iTunes (thankfully), I realised that a lot of the tags for my music files were pretty messy (thanks iTunes). Particularly the title tags for a few albums consisted of the artist name, a dash, and then the actual title of the song itself. For example album artist - song title. This quickly got annoying when scrolling through my library.
It seemed like a good opportunity to play with the Id3Lib library for C#.
This small C# utility app traverses through a directory structure looking for for all files within with the .mp3 extension. A new instance of Mp3File is then created which allows pretty comprehensive modification of the residing ID3 tags which can be accessed through the TagHandler property. In this example a small Regex is used to remove the artist from the title and update the file.
using System;
using System.IO;
using System.Text.RegularExpressions;
using Id3Lib.Exceptions;
using Mp3Lib;
namespace Mp3Renamer
{
class Program
{
static void Main()
{
IterateFiles(@"C:\Users\UserName\Music\SomeFolder");
Console.WriteLine("Done");
Console.ReadLine();
}
static void IterateFiles(string path)
{
var files = Directory.GetFiles(path, "*.mp3″, SearchOption.AllDirectories);
var length = files.Length;
var count = 0;
foreach (var file in files)
{
try
{
var mp3 = new Mp3File(file);
var title = mp3.TagHandler.Title;
var artist = mp3.TagHandler.Artist;
title = Regex.Replace(title, @"^" + artist + @"\s\*-\s\*", "", RegexOptions.IgnoreCase).Trim();
mp3.TagHandler.Title = title;
mp3.Update();
if (count % 100 == 0)
Console.WriteLine("Done " + count + " files of " + length);
count++;
}
catch (InvalidFrameException e)
{
Console.WriteLine(e.Message);
}
}
}
}
} This is just one of the many uses of this library which is really easy to get to grips with. The only problem I’ve had so far is with `‘Invalid UTF-8 strings’ in some of my files. But I guess that’s a problem on my side and not with the library.