Flash drive

I have some pictures I have saved on a flash drive. When I plug it in to my computer or my tv some pictures show up other do not....why???????
 
The most likely cause of this is that your TV doesn't support the type of file. Plug your USB into a computer, open it up, and tell me if the ones that aren't appearing are a different file type than the others (I.e. The ones not appearing are .jpg when the others are .png).
 
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