The Blacksys unit might have been a contender for me given the picture quality
The Sony lens showed to my eyes the best image until now and this was possible only on korean dashcams. Usually a simpe dashcam with Sony Exmor is more than $200. A dual dashcam maybe over $300. Just check other threads. The Blacksys $139 price is surprising me and I hope to not have some hidden bugs or to be some chinese fake of course without Sony Exmor lens .
Yes, the ebay page was revised few times in last days and maybe you are right, the rear camera resolution (yes, even on ebay they are calling it „rear camera”) was updated with its real(?) 480p resolution.
People need to know: when uploading a video on youtube wich is even 2 pixels lower than 720p, after finishing uploading,
youtube will not offer to you as a viewer the possibility to switch to 720p resolution because Youtube will store your video at the next lower resolution. So if your camera videos are between 718 and 480 pixels, youtube will offer no more than 480p.
Usually a HD image is 16:9 not 4:3 aspect ratio.
Here is a screenshot from youtube sample video which is offered in their official ebay page:
This means the video was edited on PC, upscaled from SD resolution to HD resolution just to cheat youtube the video is 720p. People which know things about video enconding already know the video was edited on PC because there is some logo and embedded subtitles.
For me this upscaling, more than fake HD rear camera seller description, means that ebay seller have intention to cheat its customers.
But! Because of time and date embedded on the top left video image, is very possible the video from ebay page to be recorded with another dashcam or the front unit and in reality the rear videos to be like the one posted by kuoh.
And this was funny:
@tivan
However I found the absence of duplicate audio in the rear lens video as an advantage! Instead of using precious data in the memory card twice, the audio is recorded only once.
@kuoh
the rear videos are MJPG AVI, which are a waste of space since they're twice the size of the front at about half the resolution.
Come on, man, you are losing just few GB, but because no audio you will gain few MB. So you are not wasting so much space, just few GB.
enjoy,
Mtz