That makes sense to me. 4K would be a lot more work for the CPU, and result in a higher power draw. The screen being on too.In driving mode, it records at 4K and 1080p, while in parking mode it is 1080p on front and rear? Correct me if I am wrong
Also, as you can see, my screen was ON when I was testing Driving mode, it usually times out after 30sec, with the screen off it should draw less.
I believe I have read that my A129 duo does the event detection 15 seconds of video buffering to the SD card, so it requires a SD card designed for lots of writes. The event detection with 15 seconds of video buffered prior to the event functionality was added after the camera was in production, so there wasn't enough memory to buffer to do it there...Also, in driving mode, Event Detection makes more sense to me, since that's what I am only interested in. It is the same current draw as the other option, but at least you a are not writing to the SD card continuously.