Method #4: this video file is embedded directly in the page (not using Rev Slider plugin) and was uploaded to our web hosting account using FTP (and not WordPress, to side-step the file size limit). It is the .MP4 full size 254 MB file and is set to autoplay and loop.

Results: on Sam’s Mac, it took about 10 seconds to load – video was black during this time – and then it ran smoothly.