I have my DR750S-2CH set to start a manual recording via the proximity button as it's the only way I know how to get the camera to note an event without me having to write down the current time and look through the list of clips later. However it seems starting a manual recording while a clip is already recording causes upwards of 8 seconds of video to be lost!
The other day I triggered a manual recording event of a car passing at a high speed and the camera dropped 8 seconds of video from the point of the end of the last normal recording to the start of the manual recording:
The video that's missing is between 16:41:31 and 16:41:39.
Ultimately what I want is the ability to flag the currently recording clip as an alert or "event of interest" to be able to find it later in the list of clips. Other cheaper dashcams have this "emergency lock" function which just flag the currently recording clip. Why doesn't Blackvue do this instead of starting a new manual recording?