You will then avoid the above TypeError exception. You should only edit your code by replacing the conversion to bytearray with the one to bytes as follows: from mutagen.id3 import ID3 When the above condition is met, the value you gave is inserted inside a list, which has a " dunder len" method, hence can be the argument of the len function, that in turn will not raise TypeError when used as argument. Taking a look at the source code of mutagen, in the part concerning specifically the mp4 file type, there is a line that looks like this. Important things first: the only problem in your code is the conversion from string to bytearray. Has anyone else ever been able to successfully implement custom tags for MP4 files? The Mutagen docs are mostly very good but when it comes to custom MP4 tags all it states is the general setup of the mean:name:key. Tags.add(TXXX(encoding=3, desc=u'ISBN', text=str(isbn))) ![]() Here is the code: from mutagen.id3 import ID3 This error actually occurs within Mutagen itself. Manual edits are easy - simply drag the music you want to tag into Music Tag, click the field you want to change, and enter the information you need. So instead of feeding the program a string I encoded it as a UTF-8 bytearray but it gave this error message: TypeError: object of type 'int' has no len() The initial error message I received was a TypeError stating that "can't concat str to bytes". So far I have been able to create custom tags for MP3 files without any issues, but MP4 seems to be another issue altogether. To download Click Here and I hope you find this useful.I am attempting to set custom ID3 tags on MP4 files using Python and Mutagen. I have it in both 32 & 64 bit and as usual wrapped up in a neat package for download. I haven't tested this yet because my test machine needs a good cleaning out! 250GB HDD with free space of 11GB. I apologize if it seems that I list this much info, but it is for your information so you can determine if it is something worthwhile. This coupled with its detailed tag editing options is the only thing that makes it worthwhile. I also have to assume that you would want to edit each file individually and would also want a lazy way to using different search parameters to create an impressive playlist. MP4 Video & Audio Tag editor would be great if all you’ve got is MP4 based videos and media files. For instance, if you have a list of Justin Timberlake songs and want to input the common artist and album data, there’s nothing you can do to it as the software doesn’t, or rather I didn’t, find a way to do batch processing. It’s a pity you cannot put similar values to multiple files at a go. The majority of my music is in Audio and would have personally appreciated a wider file format support. This is a bit misguided since the name has the word Audio. It doesn’t accept MP3 or WMA and other pure audio file formats. MP$ Video & Audio Tag Editor is just good for files in the MP4 container format. Think this makes it a simple way to create playlists using searches especially since you can launch playback straight from the tag editor. ![]() You can such a file by virtually any information you can use MP$ Video and Audio Tag Editor to append to a file. This makes it a perfect tool for extended playlists that give you more information than just the music or video itself.Ĭlicking on the advanced search tab brings up one of the most impressive and comprehensive search interface ever seen. You will have the power to change the common Basic Information like artist, album, title and release date and also have sections for cover art, accompanying information lyrics and comments. The number of files you can edit here covers a wide range of professional data any seasoned playlist manager would want to take charge of. I tried a folder with up to 200 videos at a go and the app didn’t have any trouble loading them and listing the files ready for tagging. You will find the drag and drop or complete folder loading capability quite useful if you intent to tag a whole lot of media. MP4 Video and Audio tag editor uses a simple and straightforward approach to getting all your media loaded, processed and ready for tagging. Unlike Giveaway Today where you have to install it within a time constraint. It is a good place to get free, reasonably good working software that you can save and use later or after a crash. Here is another program I found Shareware On Sale.
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