What are the file requirements for getting embedded jpg files to appear for MP4 files?
I have gotten all 1000+ of my MP3 files to properly show album covers but for MP4 files I can only get one or two movie posters to appear out of dozens of files. I use MP3TAG for both MP3 AND MP4. MY MP4 movie posters are all the same file size, resolution, subsampling etc l can't figure out why a couple work and most don't.
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