In my research, I sometimes need to record video from an experiment. But in reality, I don't need multiple frames per second video, I just need a photo of the environment at a regular interval, like once per second. These photos allow me to go back in post-processing to figure out exactly where people were in the environment, for example. Here are the problems with using, for example, a Flip video recorder to record video:
Another problem with my web cam is that it hard to point it in the right direction to capture a picture of the environment. Instead, I use a usb-connected camera with a stand that I can point in whatever direction I want.
The solution I use to capture images at a regular interval is to use the "streamer" program. It will allow me to collect images at a set rate (with the -r
streamer -c /dev/video1 -t 600 -r 1 -f jpeg -o temp000.jpeg
The files will have a unique number as the last three digits of the file name, and the "date modified" field will show my laptop's system time when it was created.