Real or fake 1080P

[varnco]

Just getting into dash cams. I've played around a little with the 808 cameras, and currently own a #16.

I have a recently purchased dash cam from Amazon, and it indicates full hd at 1080p, it's a http://www.amazon.com/Carcam-G-sensor-camera-high-resolution-wide-angle/dp/B00B1AEHZC/ref=sr_1_1?ie=UTF8&qid=1371239297&sr=8-1&keywords=dash+cam+600#productDetails

Is there any way to tell if it's really 1080P or just up-scaled?

The details of a video show it is
MJPG
.avi
1920 x1080
19,643kbps
25FPS
3 Min file is 436MB

Sample video on the Internet (not mine)
http://www.youtube.com/watch?v=GgQ2qxIYRJA

Thoughts?

 

[cantremember]

The timestamp is the same as on my CarCam K6000 (or something, I'm not sure of the exact model, it looks exactly like a K2000 physically). Which is actually a 720p dashcam, and when you choose 1080p it's higher resolution but image quality is same as 720p (so waste of storage), but nontheless a very good cam.

For this one, I don't know

 

[July]

You can consult a professional