How to record video from a webcam built into a laptop?

Question

Video

How to record video from webcam on laptop, win10? It is necessary that it is constantly recorded in the background and when the screen is locked.

Answer 1

Look for some kind of video recorder (like for video surveillance). There will be such functionality. Software - I have not seen this.
You can pile something (with scripts) or ffmpeg and run it as a service in the system ...

Answer 2

The first way is to capture video using the movie studio built into Windows (provided that you have the appropriate version of this OS installed) or the familiar Windows Movie Maker. It is very easy to record a video in it, just launch the program, select the “Video from webcam” item, connect the camera, set up an audio device (external or built-in microphone), click on the “Record” button and save it to your hard drive after the end. The program also provides the ability to edit video and publish the resulting file in social and media networks.
The second way is to use the software that comes with the camera. Usually, all manufacturers complete their webcams with a simple video editor with the ability to capture images and video signals, which can be used to record video without any problems. Typically, such software is supplied separately on a disk or downloaded from the official website of the manufacturer. All that is required in this case from the user is to install the desired program, run it, and it will detect the camera itself and offer to record a video or take a photo.
The third way is to install universal software for capturing video from any connected webcam. There are a lot of options, it will be enough to list the most popular and proven ones: VirtualDub, Screen Capture Studio, WebCamMax, Altarsoft Video Capture, BandiCam and others. All the presented programs allow you not only to record video from a laptop camera, but also make it possible to edit it, apply effects, text and animation. An additional useful feature is to capture the computer screen, for example, Bandicam or Screen Capture Studio. This is very convenient when you need to write down your comments and demonstrate some work on the computer.
The fourth way - the easiest and most affordable for everyone - is to use online services that allow you to record video from a camera online. There are quite a lot of sites with similar services, here are some examples of the most popular ones: YouTube.com, Skype, Recordr.tv, Webcamera.io, Webcamio.com, etc. The main advantage of such services is their availability and ease of use. You just go to the site and the shooting begins. At any time, you can stop it and save the video or publish the video online. A good example of this convenience and functionality is the popular YouTube, which allows you to broadcast online in real time. The main disadvantage of all of the above services is the need for a stable Internet connection,
In any case, there are plenty of ways to capture video from a regular laptop or desktop computer webcam today. And each of them has its pros and cons. You just have to choose the best one for you and use it as needed.