By PURPLELEC | 17 June 2024 | 0 Comments
HDMI capture card realizes high-definition video capture
The most widely used high-definition audio and video signal is the HDMI signal, which can transmit video and audio synchronously, such as common high-definition cameras, high-definition players, set-top boxes, computer graphics card outputs, etc. The HDMI capture card can capture the HDMI audio and video signals of the video source device into the computer for processing. It can transmit uncompressed high-definition video and audio to the computer with high quality.
For example, Purplelec VS009 can capture HDMI audio and video signals up to 1920*1200 60Hz, and is backward compatible with various resolutions, perfectly realizing the acquisition of HDMI audio and video signals. Now when using an HDMI video capture card, only one HDMI high-definition cable is needed to connect the video source device. Therefore, it is necessary to use the HDMI high-definition cable correctly.
1. Choose the right HDMI high-definition cable
To judge the quality of the HDMI high-definition cable, the first thing you can look at is the diameter of the HDMI inner core. The larger the diameter, the better the quality. Of course, it also depends on whether it has a magnetic ring or a protective cover. These accessories can increase the stability of signal transmission. However, the quality of the HDMI cable attached to the brand high-definition equipment is still very good, and there is no magnetic ring or protective cover.
2. Turn off the power of the device before plugging and unplugging the HDMI high-definition cable.
HDMI cable has hot-plug function, and the design of HDMI interface is also convenient for plugging and unplugging HDMI cable. However, due to the different production processes of HDMI cables of different brands, if the HDMI cable is hot-plugged in the power-on state, it may cause the chip of HDMI interface to burn. Therefore, in order to ensure the safety of HDMI cable as much as possible, when plugging and unplugging HDMI cable, turn off the video source HD playback device and computer first to avoid accidents.
3. HDMI cable should be correctly connected to HD device.
When we use HDMI cable to connect HDMI capture card for the first time, there will be some problems, such as no image signal display on the monitor. At this time, we can check whether the HDMI cable is connected correctly and select the correct HDMI interface. If it is plugged in wrong, we need to turn off the display device and reconnect the HDMI cable to the correct HDMI interface.
4. HDMI cables for different HD devices are different.
Different HD devices need to choose different HDMI cables. If we choose a computer as the host, we need to see what type of graphics card the computer has. If it is a DVI interface, we can use an HDMI to DVI cable, which can adapt to many home appliances and effectively avoid the waste of wires.
HDMI capture cards play an extremely important role in today's environment of rapid renewal of communication electronic products. Its function is to transmit the HDMI audio and video signals output by the video source device to the computer for storage or processing, and it can be manually controlled, and ultimately can achieve video conferencing, live webcasting, remote teaching, video recording, streaming media applications, etc. However, since there are many HDMI cable models for HDMI capture cards on the market, we must choose an HDMI cable that is suitable for us, reasonably priced, and of guaranteed quality.
Leave a Reply
Your email address will not be published.Required fields are marked. *