I changed my helmet last year, and never got round to fitting the (SJ4000 clone) 1080p action cam to the new helmet...
This year, I decided to bite the bullet and set up the camera, but whilst been sat in it's box, it has gone faulty.. just get a power light, and nothing else.
I'm now thinking a better option would be to fit a dual channel camera to the bike, mainly for two issues... better than 45 minutes of battery life, and convenience as in fit and forget.
So... I have spent a long time trying to find something that meets my requirements..
Video quality, ease of retrieving the data (wifi), and unit cost are highest priority, GPS is very desireable.
As it will be mounted under the seat, a screen is not required, but needs to connect to phone via an app.
My issues are, I have researched video quality, and find that my cheap 1080p 30fps helmet cam was far superior to most fitted bike cams... I have absolutely no idea why, as specwise they would be very similar, and therefore in my mind have similar video quality.
If it wasn't for the battery life, mounting issues, and convenience, I would have bought two action cams and tried to fit them to the bike...... but seriously, it's not an option.
So, it looks like I may have to make do with lower video quality, as a substitute for gaining the other benefits.. swings and roundabouts..
There are plenty cheap units for £25 ish... but I can only imagine how bad the quality is.. I haven't seen any footage, and 1080p in name only perhaps, and so I am totally disregarding those.
Looking at the video quality of the higher priced units which are still classed as 1080p, tend to use Sony sensors, which has to be my preference. I appreciate when video footage is uploaded, the holding site tends to compress and degrade it.. but even then, my footage seemed to be higher quality.. (a friend bought a similar GoPro clone, which was shockingly bad, so maybe I was lucky to get a good one)
I have considered lots of dual channel cams, and then always seem to find a reason why not to choose it... for example, Innovv K2, well reviewed, but for what it is, too expensive, but now find it also has thermal issues.. Other models like Blueskysea DV688 (no wifi) DV988 (too big, and poorer image sensors.) and the list goes on.
Also there is a lack of big name companies making dashcams for bikes... Sony, Canon, Nikon, Samsung etc.. and I'm fairly sure they could if they wanted to.. Just loads of Chinese names I have never heard of.. which is exactly why I can only go on recommendations. It's becoming a bit of a nightmare at the moment.