how long does the battery last n how long can your sd record?I have a Veho VCC-005 HD camera, which has a cool sound activation mode. So I can leave it on all the time and would record even when I park and away from the car. Useful also to see all that goes on with my car when I bring in for service at the dealer; mounted in back facing forward to see interior as well. Funny to hear comments and things around the car. I know exactly when/how it's driven. Many features on this: sound activation, loop recording, 8meg pix photo camera mode, wireless remote control, auto standby, window mount bracket built in screen for viewing,....all of this got for just ~$120 bucks.
Continuous recording is up to 3hrs on the battery, but since it comes with a usb power connector and car adapter cable, you can have it connected to be powered automatically. Then with the sound activation feature, it records if the mic sense above 65db and stops after 2min if sound is below that. Then after x min of inactivity, it will go to standby but will be triggered upon any sound again. Also with setting to loop recording mode, no worry on running out of memory; just transfer when you want to save footage before it loops around again. So essentially you can have 24hr surveillance, automatically!how long does the battery last n how long can your sd record?
The thing about using a gopro (continuous recording video in HD, etc etc) it doesn't loop should nothing happen. GoPro's cater to people who are doing outdoor activities, and when it's on, it's recording, filling up that SD card until you manually go in and review/erase the data. A true dash cam will overwrite old data to bring in new video data under normal circumstances, so you wouldn't have to constantly reformat the SD card. Good thing about GoPro similar units is, it does record in true HD, it's great, which i'm sure can pick up license plate numbers and such which is a plus. The biggest drawback about it is there's no physical screen on the unit for instant playback. Most dash cams also have a date and timestamp, which i find very important in a surveillance setup.I think go pro3 or Sonny action cam