Screen recording device

Abstract

The invention discloses a screen recording device comprising an acquisition board, a synthesized board, an encoding compression board and a file writing module. The acquisition board comprises a computer video acquisition module, a camera video acquisition module, a computer audio acquisition module and a microphone audio acquisition module. Each acquisition module is realized by independent hardware, and needs not to occupy a CPU (Central Processing unit), so the acquisition frame rate is not limited by the processing speed of the CPU, the dynamic video and the transparent pictures can be captured, and the computer voice and the microphone voice can be recorded simultaneously. In comparison with recording just by software, the recording effect is improved, and the recording efficiency is increased.

Description

Technical field [0001] The invention relates to the technical field of audio and video recording, in particular to a screen recording device. Background technique [0002] With the popularization of computer applications, computers are often used to demonstrate relevant content during education, conferences, and speeches. In order to facilitate the audience to review, it is usually necessary to record the live sound and screen images to form a video for playback. [0003] Currently, in the Windows environment, there are two commonly used screen capture techniques, GDI / GDI+ capture and Directx capture. The following disadvantages exist in the use of these two screen capture technologies for screen recording: [0004] 1. Both are pure software recording technologies, so the recording effect has a lot to do with the computer configuration of the hardware. High configuration has good recording effect, low configuration has poor recording effect, and affects the use of the operating syst...

AI Technical Summary

Problems solved by technology

[0004] 1. Both are pure software recording technologies, so the recording effect has a lot to do with the hardware configuration of the computer. High configurations have better recording effects, while low configurations have poor recording effects, and affect the use of the operating system;

[0005] 2. Since the recording process takes up more CPU, the number of recorded frames is limited, generally below 10 frames;

[0006] 3. GDI / GDI+ capture can capture semi-transparent images, but cannot capture video images that are playing

Directx capture can capture the playing video image, but cannot capture translucent images, so no matter which technology is used, the output capture of the entire screen is incomplete;

[0007] 4. Using pure software to record, the sound output by the computer cannot be recorded, only the sound of the microphone can be recorded

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