45c73d784c645e958dae0c911b0995d8.m4v

: A key distinction is that M4V files can be protected by FairPlay DRM . If protected, the file will only play on authorized computers or devices associated with the purchasing Apple ID.

The string 45c73d784c645e958dae0c911b0995d8 is a 32-character hexadecimal string, which is the standard length for an . 45c73d784c645e958dae0c911b0995d8.m4v

: If a device (like a smart TV) doesn't recognize it, you can often simply rename the extension from .m4v to .mp4 to make it compatible. : A key distinction is that M4V files