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Video works - then does not

Retep Drallub

New Member
I have a video that was taken using a Samsung phone. The file extension is mp4 and the file is about 48 meg. I transferred the file to my Surface RT and it worked fine in the Video app. Then it refused to play with the message

Can't Play

Either Windows doesn't support the items file format or the content doesn't match the extension in the file name.

I deleted the file, transferred it the Surface again and everything was fine on Sunday and Monday. Today it refused to play with the same error message. I am not sure what has caused the file (or app) to change