Okay, so I just tried two five-minute tests (Almost to the second) In my testing:
- 5 minutes of live view streaming for one camera used 3.6MB of cellular data.
- 5 minutes of SD card playback for one camera used 2.8MB of cellular data.
- No amount of “event” playback causes any cellular data usage, nor does anything else I’ve found in the app.
That rate may vary a bit. I’m not sure if live view is always more than playback, for example. I’d have to test further to figure that out, but it’s not super important anyway.
Based on that rate, it doesn’t seem like video data itself is going over the cellular connection, because I would expect that usage to be higher. But it DOES seem to be a constant leak while in live view or playback. (If they’re sent as separate streams, that amount of data might be the audio feed, for example.)
It could also be audio UPLOAD. (Not necessarily either/or, but if so, that may be why live view uses a bit more data than playback. Although I’m not sure if that’s consistent or not) I didn’t manually start a two-way audio session, but I know that if you view video in the car, for example, the way it connects to Bluetooth implies that it’s listening to you as soon as the video starts streaming, even if you haven’t tried to start the two-way audio session.
I might be able to do a little more testing and figure this out… If the data usage stays about the same while I DO use two-way audio, for example, it would seem to imply that this is part of the culprit.
I could also test the difference with a multi-camera view, but since @Newshound’s usage was more than twice as much as mine would be at 1-hour scale, it would seem that more cameras streaming = more cellular leaking