I have a single-bay WDMyCloud NAS. I store video files on it. I can reach these files from my Android WDMyCloud app. I just want to confirm my understanding.
Basically, my 3TB NAS is linked to 3TB of cloud storage provided by WD. Things are synced in the background, so when I add a file to the NAS, that file is synced in the WD Cloud. Otherwise, I cannot understand how my app (running via the cellular network, thus not on the same LAN as my NAS hardware) could reach those files.
I assume this is how it works. The only other alternative is that somehow my NAS is punching a hole through my firewall and my phone app is directly talking to my NAS hardware. This could be done, but wanted to make sure this is not the case.
Finally, it seems that I can stream those files to watch them using the WDMyCloud app. What streaming technology is used on the cloud side to make that streaming work? (I am pretty sure the server is not just saving the entire file to my device before playing).