pcmeister

I have never used the GV software, and have a few questions before I get the GV250. Can someone please tell me. Basically, what I want to do boils down to this- I want to record about 8 continous hours of video footage using the digital watermark feature, which I assume will make the footage court admissible. I want to show that the video was recorded uninterrupted for the full 8 hours and could not have been tampered by anyone, including me. Is this do-able with geovision? Also, looking at some screenshots of the program, I notice the timeline is broken into individual parts that are about 5 minutes apart. Do these individual parts correspond to small video files on the hard drive that are individually watermarked? I'm trying to understand how all this works. Thanks.

I might be better off replacing the surveillance setup with a single reliable witness; the problem is the person must sit still for many hours without falling asleep LOL.

It would be great if there existed some robust surveillance software that would force the user to connect to the company's servers for time/date setting according to the user's timezone determined by IP number (that is, the software wouldn't permit recording unless this time syncing is done at the beginning of the session), and then allow a multiple-hour single video file to be recorded, watermarked.

LOL. I'm not sure if this will do it, but how about running a network analyzer program's (like wireshark or ethereal) activity screen in a window that will show detailed network activity while doing the time check.

I greatly appreciate your reply. As ridiculous as this might be, can I get your take on this scenario: Let's say I want to provide proof showing that someone has been in a room for an extended period of time and at a time that no one is supposed to be in the room, and this person exits the room through a door at a fairly predictable time, after being in the room for about 12 hours. I want to provide footage, like 8 hours worth, of the door not moving until the time the person exits, thereby proving the person was in there all that time. To establish the real correct time in the footage, I could begin recording with a time/date overlay, and then hold the camera in my hand, pointing it at a laptop screen with windows xp on it, and then do an internet time update a couple of times to demonstrate that the time/date shown on the laptop screen is indeed the correct time, and it matches the time shown on the overlay. I would also show that the time zone is correct on the laptop's screen. Then in one fluid motion, I would move the camera slowly away from the laptop screen to the position it will assume for the next several hours, pointing at the door. The camera will stay focused on the door with the time/date overlay ticking away for the next 8 hours until the person can be seen exiting the door. Then, right afterwards, I would export the footage and hand it over to another person for safekeeping, and to show that it could not have been tampered by me, the operator in that short period of time. The watermark feature will of course been turned on from the start. Could this method hold up to a lawyer's scrutiny, or is this a laughable idea?

I assumed the whole point of watermarking is to show that the video could not have been tampered by ANYONE, including the operator. But that is not necessarily so? Regarding the 5 min files, I assume they are assembled together for exportiing and the final video will be basically seamless and have no missing video (like in seconds) whatsoever? And the watermarking process is applied to the individual files as they are recorded, and it survives the export process?

Hi, I'm interested in getting the GV-250-4. I have a question about watermarking though. According to the FAQ on watermarking on the geovision web site, the figure says "Checksum: PASS" and "Similar Rate: 87%". Why does it say 87%? Shouldn't it be 100% if it is an unedited original? If a video has been edited, for example, only one frame removed, is there a possibility that it will pass the watermark test? I want to make sure this watermark feature is 100% reliable.