Thanks Crystal,
I dropped the video file in my source tree under files/resources/image for now, it basically looks like any other Appery media file inside the app.
The problem is extra simple for Appery team - either you can download a MP4 file unmangled or you can't I saw you had asked them earlier, and I thought I'd just make it real simple - you can't even download a video into a browser, as you can with images or other objects stored in the files.
If you're playing with images and videos, you may want to look at ImgCache from github - I use it extensively to cache the image information on the device (iPhone, Android), and it works in Chrome and Firefox browser nicely, but only Mobile Safari.
I also am using Vide from github to handle the video containers - startup, ready, play, etc. with some small extensions. Don't know your app but may make coding simpler.
-Joe