Rolling Video buffer to record last 'x' minutes of video

**fincl** · 08-03-2006, 02:09 AM

Hi all,

Just trying to find any info./programs that will allow me to capture the video from a front and rear mounted camera to a rolling video buffer.

The intention is that when I press a button, the last 'x' (2 - 5 minutes) of video will be saved to a file on the hard drive. (I don't want to record constantly, only the 'x' number of minutes that were buffered BEFORE I press the button).

I know cops over here in OZ, and probably other countries, have this ability. I have spent half a day at "work" ;-) searching the 'net but to no avail.

Cheers

Fincl

**sama** · 08-03-2006, 03:21 AM

I've been thnking about doing this for quite some time. there are already hardware solutions that do this, without a computer.

you could probably do it this way:

find some software that records, and splits files by 10 mins. then every 11 mins, delete the last file, except if you press a button. that should do it.

**Erorus** · 08-07-2006, 12:51 PM

Capture! does this.

**fincl** · 08-10-2006, 03:48 AM

Doesn't seem to have a rolling buffer though... only appears to record video after a button press....

**2k1Toaster** · 08-10-2006, 04:12 AM

Is this for some sort of "black-box" sort of thing?

**fincl** · 08-10-2006, 04:20 AM

Originally Posted by 2k1Toaster

Is this for some sort of "black-box" sort of thing?

Not sure what you mean..... Mainly if there's an accident/close call, wanted to be able to record the few minutes preceeding the incident.

**2k1Toaster** · 08-10-2006, 04:48 AM

Yeah, that's kind of what I meant. I was referring to the black-boxes that some limo drivers use as well as the boxes in modern aircraft. They record video, sound, speed, all sensor information. When the airbag goes off in the car, it stops recording leaving what it has in tact and very hard to destroy. In a plane, when it goes smack, the box survives allowing the reason of the crash to be found easier.

To do this, I suggest what sama suggested. Constantly record onto a file on your HD. Every 5/10/15/20 minutes snip the video. Every 5/10/15/20 minutes after when the second chunk is done recording, delete the first chunk unless the button has been pressed. Might also want to rig it to your airbag on/off wire. Incase there is a serious accident, the airbag signal will simulate the button so that you don't have to crawl back to your car to push that button. Although in that circumstance, the PC will be long gone anyways!

**HyperSprite** · 08-18-2006, 01:37 PM

Originally Posted by fincl

Doesn't seem to have a rolling buffer though... only appears to record video after a button press....

It does now, the Capture! thread ( One-Click WebCam Recording! ) follows it from the beginning so the latest features are not obvious in the first few pages. It can be set to start recording when the app is started, it saves X number of files that are X long at all times and when you hit the HD button, it will move the current file into a another folder so it does not get over written.

I have just started using it in the last few days and it seems a little odd to get going but once you get it set up, it seems to work well.

Chris