I'm working on a G5 OS 10.5.8 machine. I have an iMovie .mov file that is 807 MB that I need to compress for transmission to a large number of recipients as an email attachment, without significant loss of fidelity or clarity. People keep recommending DropBox, but isn't that just like iCloud, storing the file on the net for others to access. The crowd I'm sending this too will look at email attachments, but will not reliably go to any other site, like DropBox, iCloud, or even YouTube, to look at the video. Any suggestions?