format - Video file not recognized in android studio

Question

I added a file named 'testingClip' of mp4 format in a directory i made named 'raw' under 'res',it keeps on showing this error message saying it doesn't recognize the file type.

Answer 1

Don't use any capital letter in resource file name Change your testingClip.mp4 to testingclip.mp4

resource names must contain only lowercase a-z, 0-9, or underscore and The resource name must start with a letter.