屏幕截图C ++(视频) [英] Screen capture c++ ( Video )

问题描述

早上好.

我一直在寻找一种以全屏或特定坐标x/y捕获音频的从屏幕"捕获视频的方法.

我已经尝试过ffmpeg，但是我找不到很好的教程，每个人都使用需要静态版本来记录的命令行，即使我尝试了它也说输入/输出错误没有屏幕设备"

我尝试过Directx，起初我想寻找一种捕获视频的方法，但仍希望能找到我，但我只是为了进行测试而尝试了此操作.

Good morning.

I''ve been searching for a way to capture a video " from the screen " with audio at full screen or at a specific coordinate x/y.

I''ve tried ffmpeg I couldn''t find a good tutorial + every one uses the command line which needs the static version to record , even when I tried it it says input/output error " no screen device "

I tried Directx , at first I searched for a way to capture a video I''m still looking hopefully I''ll find but I tried this just for the sake of testing..

 IDirect3DDevice9* g_pd3dDevice;

void MainWindow::capture_video(){

 IDirect3DDevice9* g_pd3dDevice;

void MainWindow::capture_video(){


    IDirect3DSurface9* pSurface;
        g_pd3dDevice->CreateOffscreenPlainSurface(100, 100, D3DFMT_A8R8G8B8, D3DPOOL_SCRATCH, &pSurface, NULL);
        g_pd3dDevice->GetFrontBufferData(0, pSurface);
        std::string path1=path.toStdString();
        LPCWSTR a=(LPCWSTR)path1.c_str();
       D3DXSaveSurfaceToFile(a,D3DXIFF_BMP,pSurface,NULL,NULL);
        pSurface->Release();
}

但是当调用此函数时会崩溃..

我搜索了直接放映，但找不到我不知道为什么.

因此，您是否可以将我定向到一个图书馆/方式来进行此操作，并提供良好的教程，因为我是新手.

but it crashes when this function is called..

I searched for direct show but couldn''t find it I don''t know why.

So could you please direct me to a library/way to do this and with good tutorials since I''d be new to it.

推荐答案

在StackOverflow上有人这样做了使用 openCV [ ^ ].可以在这里找到代码:

http://stackoverflow.com/questions/14148758/how-to-capture-the-desktop-in-opencv-ie-turn-a-bitmap-into-a-mat [

On StackOverflow somebody did this using openCV[^]. The code can be found here:

http://stackoverflow.com/questions/14148758/how-to-capture-the-desktop-in-opencv-ie-turn-a-bitmap-into-a-mat[^]

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