The string 45c73d784c645e958dae0c911b0995d8 is a 32-character hexadecimal string, which is the standard length for an .
: If it is DRM-free, you can open it with versatile players like VLC Media Player or Media Player Classic . 45c73d784c645e958dae0c911b0995d8.m4v
The format is a video container developed by Apple that is very similar to the MP4 format. : If a device (like a smart TV)
: 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. : You can use a tool like MediaInfo
: 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.
: You can use a tool like MediaInfo to see the internal metadata, which may reveal the original title or encoding software (like HandBrake , which defaults to .m4v for certain settings).