Originally Posted By: Eosyn
Originally Posted By: Reddy45
There is an argument to be made that you shouldn't use a huge SD card in a dash cam. If it is stolen or lost, you will have days or weeks of footage that someone could use against you.
Assuming the dash cam is meant to capture collisions or vandalism, a smaller one will still suffice as long as you lock the file or pull it off ASAP.
Ah, very good point. Thanks for the insight
So, a 32 or 64gb should suffice?
Please educate me on how dash cam work. From what I understand, it records in 3-min loops? So is it always recording when the ignition is on or does it only record for only 3 mins then stop? I've also seen some vids of it recording when car is parked and captured footage of the car being swiped by another vehicle. So I don't understand when it is able to record. Are they motion sensing when the ignition is off?
Even lower. I use a 16GB card in a camera that records 1080P and I hold on average 2 days of footage. (night footage takes up less space than daytime footage)
Most record in 3 or 5 min segments, and once the card is full it deletes the oldest file and continues recording. (so it's a rolling stream of footage)
Whether the camera records constantly depends on if your cig lighter plugs stay active when the ignition is off. The cameras that record while parking will need constant power, and often have a setting for 'sleep time' which is how long the camera stays active until it detects no motion. Most have a g-force sensor to detect a hit, primarily to lock the current file during a collision (so that 3 min file doesn't get overwritten).
Do not assume all of them have a robust parking mode -- you have to read the reviews for all of them to know if they implement it well.
If you have a strong feeling that your car will be hit while parked, it's best to have aux power and leave the camera running constantly while parked.