Img_3147.m4v -

Here is a blog-style guide on how to handle files like . What is an .M4V file?

If you need the file to be more "universal" for editing software or older devices: IMG_3147.M4V

Upload the file to Google Drive , iCloud , or Dropbox and share the link instead of attaching the raw file. Here is a blog-style guide on how to handle files like