By PURPLELEC | 13 August 2024 | 0 Comments
How to connect a USB video capture card to a mobile phone and a computer
A USB video capture card is a data acquisition device that must be connected to a computer. The connection between a USB video capture card and a computer is very simple, that is, data transmission and acquisition are performed through a USB data interface.
How to connect a USB video capture card to a computer
1. First, we connect the USB interface of the capture card to the USB interface on the computer. As long as the connection is normal, the computer will generally automatically read the installation wizard.
2. After the installation wizard pops up, we select the advanced installation option, and after confirming that it is correct, click "Next". In the newly popped-up serial port, select "Include this location (0) in the search", and then we use the mouse to click "Browse" to select the location of the device driver. After selecting the installation path we expect, we click "Next" to continue the installation. During the installation process, a dialog box will pop up asking whether to continue the installation. We can ignore it directly and click Continue to install. Then we click "Finish" in the new window to complete the installation of the capture card.
3. After the installation is successful, we still need to operate according to the corresponding requirements. First, we need to check whether the device is normal. Move the mouse cursor to: My Computer, right-click and select "Manage". In the pop-up window, select "Device Manager" to view the current hardware devices. In "Sound, Video and Game Controllers", we can see "USB Captuer video". If there is an exclamation mark or a question mark, you should restart the computer in time to fix the problem.
4. After the above hardware operations are ready, the next thing we need to do is to install the software. We put the CD with the software installation program into the computer CD and install the software. After the software is installed, we can start the software through the shortcut on the desktop and use the functions of the relevant video capture card to perform data acquisition and other operations.
How to connect the video USB capture card to the mobile phone and computer
First of all, no matter what interface (lightning interface, type-c interface, micro USB interface) the mobile phone can be converted to an HDMI interface. There are such conversion cables on the Internet now, and the price ranges from more than 100 to more than 300. In addition, you need an HDMI USB video capture card, and you must choose a capture card that can adapt to the resolution. Because the resolution of the mobile phone is not adjustable, you must choose a capture card that can automatically identify the resolution of the mobile phone.
1. First, the capture card should be connected to the computer USB interface, and the mobile phone interface is connected to the USB capture card and the mobile phone interface. There is also a USB power supply interface on the screen, which can be directly plugged into the computer USB.
2. After connecting in this way, check the computer device manager-----sound, video game controller, and there are three more USB devices, which means that the USB video capture card is recognized.
3. Open the video capture software, and a connection status screen will appear on the screen. After a few minutes, the screen on the mobile phone will appear.
4. Open the OBS software, add a scene----add a video capture device. Select the capture card in the video capture device-device.
5. Click OBS Settings-Streaming, and write the live streaming platform's push stream address and push stream code. In the box below.
6. After filling in, click "Start Push Streaming", and the live streaming platform will have a picture. You can send the live broadcast two-digit code or room number to your friends. The method of using other live streaming platforms is the same.
Advantages of HDMI digital interface of high-definition video capture card
Precautions for installing the built-in video capture card
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