Thanks for all reply,
I am looking for below options only.
1) as soon as software start, it will ask for user name and password. (pre define )
2) after log in, it will show 80% of screen of live video and 20% for user control.
3) live video should be with company logo over lay.
4) then user will click on new recording button and one window will pop up.
5) in that windows, user will enter, Name, Age, Sex, and other info and save it.
6) When required, user will start the recording and when required it will be stoped.
7) recoding will be saved on HDD with the info enter like name, age, sex etc (time stamp)
8) recording should be with overlay logo,
9) recording then can be exported to USB drive and on DVD.
10) Also play back function should be there, user should be able to select Name of person enter and then he should get all the video saved on his name,
11) Recording also can be started with external reset switch, [i will convert this reset switch to foot switch]
12) external switch is required as person using camera will be in operation room and will have his hand busy operating a person.
13) Software will have a small button where it will shutdown PC
14) if possible should run on minimum linux . [as i am thinking of using it on a small laptop]
As this is going to be used in medical care, I wanted some good stable software like mythTV on linux base, or even embedded linux.
As starting embedded project from Zero level will cost more, So I am thinking of using a linux base software on a laptop with customize Linux distro, as minimum required linux will boot and only this software will run.
Thanks