Today I wrote a (powershell) script that returned the cover information of all my files to me. I want everything to be .jpg and filter the .png (and a single bmp) out. I end up with a list of folders, in a text file, that I want to open in mp3tag. Unfortunately, I don't manage to add multiple folders to mp3tag from the command line. For a single folder it would be mp3tag.exe /fp:"". But several folders? If I try to loop through the array, it removes the old folder and adds the new one - while I want to append of course.
As far as I know, the command line feature was never meant by Florian to be public (although I've seen that it's been published meanwhile) and is actually the parameter used for the context integration. Because from the context menu several folders can be added at the same time to mp3tag, I'd conclude that this should be possible from the command line too; without the batch FOR loops I saw elsewhere (and that I really can't get to work). Does anyone have any clues on this?
I found a post where someone asked what the file limit is of mp3tag, but no one could give an answer. I have a pretty big collection and I haven't found the limit yet of files it can load: I did about 180 000 (which took ages - OK, an hour or so - on an i7 with 24GB RAM and consumed 2GB of RAM!), BUT the program returns an error (but doesn't crash) when trying to apply an action to the collection (in my case: extract cover to "folder.jpg"). I had to do it in 3 times 60 000 to make it work. My guess would be that the limit is 99 999 or so. Still, it would be nice if someone (Florian?) could give a definitive answer to this.
PS. Anyone interested in Powershell and ID3 tags: you only need taglib-sharp.dll to get started. Feel free to ask me more info if you can't get started by googling.