Album Art Not showing in MP3Tag since using "Correct Aspect Ratio"

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1

I was updating missing Album covers. I played with "Correct Aspect Ratio" on a couple of files and it helped. I decided to select all files, check "Correct Aspect Ratio" and press the save button. Since then, the Album Art is not showing in MP3Tag.

Some of the covers still show up when the files is played with VLC Media Player and some do not. I have not figured out:

Why Mp3tag removed the Album Art when using "Correct Aspect Ratio" on ALL files

>Why VLC Media Player shows the Album Art on some but not all files

>Why VLC Media Player shows Album Art that Mp3tag does not

>How to recover the Album Art on 8,000 files

2

AFAIK VLC has a cache that may still contain some images.

3

AFAIK this option simply sets the display to either fill the whole square area or show the picture as a rectangle with possible bars at the sides or top and bottom if the picture is not square.
This does not modify the embedded picture.
So it must have been something else that has happened on your machine.
E.g. the pictures were not embedded in all files.

4

You must be right. I repeated the same operation on another computer with backups that I had for most of the files and it did not occur again. I must have selected another setting but I don't know what it was.