By PURPLELEC | 14 August 2024 | 0 Comments
The difference between HDMI video capture card and HDMI video recording box
HDMI video recording box can be used to record related devices that can output HDMI high-definition digital video signals, such as high-definition HDMI cameras, HDMI high-definition set-top boxes, etc. HDMI video capture cards can also capture HDMI high-definition digital signals output by related devices such as HDMI high-definition cameras. What is the difference between the two devices?
HDMI video capture cards mainly have acquisition and processing functions. They do not have recording functions and cannot save videos to related storage devices. Instead, they directly transfer the acquired and processed video information to the computer. Then we can understand the video capture card as a receiver that receives HDMI video information and transfers it to the computer for display. Therefore, HDMI video capture cards are actually mainly used in live broadcasting, video conferencing, telemedicine and other occasions.
HDMI video recording box can support recording HDMI video signals to USB flash drives or mobile hard drives. It uses H.264 hard compression technology. Usually, one hour of video is saved in 720P for about 6G, and 1080P for about 8G per hour. Therefore, it cannot be directly transferred to the computer. If you need to edit the recorded video, you often need to wait until the recording is completed and then copy the video to the computer to apply relevant software for editing.
In use, HDMI video capture cards usually do not require an external power supply and can be used by directly connecting to a computer and related video source devices. However, HDMI video recording boxes are different because they record directly to a USB flash drive, so they require power supply. After connecting the corresponding equipment, there is usually a recording button. When recording is needed, just press the button to start recording.
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