使用avi格式的网络摄像头进行视频捕获 [英] Video Capturing using webcam in avi format

问题描述

我正在开发一个项目，我想同时从两个不同侧面从两个网络摄像头捕获视频.
但是当我从两个摄像头开始录制时，它都显示"END RECORDING"状态； <​​br/> 但是当我开始录制单个网络摄像头时，它会录制视频.
我说的是用于录制的代码.
另外，我正在使用Microsoft Sdks的vfw32 库来实现此网络摄像头功能.

I am developing project in which I want to capture video from two webcam at same time from two different side.
But when I started recording from both webcam it shows "END RECORDING" status ;
But when I started recording single webcam it record a video.
I am mentioning the code used for recording.
Also I am using vfw32 library of Microsoft Sdks for this webcam functionality.

//CONNECTION FOR WEBCAM1

hMyWindow1 = capCreateCaptureWindow("", WS_CHILD |WS_VISIBLE,rect.left, rect.top,rect.right,rect.bottom, hw, 0);

capSetCallbackOnStatus(   hMyWindow1,    capStatusCallback1);

SendMessage(hMyWindow1,WM_CAP_DRIVER_CONNECT,0,0);

SendMessage(hMyWindow1, WM_CAP_SET_SCALE, true , 0);
SendMessage(hMyWindow1, WM_CAP_SET_PREVIEWRATE, 66, 0);
SendMessage(hMyWindow1, WM_CAP_SET_PREVIEW, true , 0);
SendMessage(hMyWindow1,WM_CAP_DLG_VIDEOSOURCE,0,0);


//CONNECTION FOR WEBCAM2

hMyWindow = capCreateCaptureWindow("", WS_CHILD |WS_VISIBLE,rect.left, rect.top,rect.right,rect.bottom, hw, 0);

capSetCallbackOnStatus(   hMyWindow,    capStatusCallback1);

SendMessage(hMyWindow,WM_CAP_DRIVER_CONNECT,0,0);

SendMessage(hMyWindow, WM_CAP_SET_SCALE, true , 0);
SendMessage(hMyWindow, WM_CAP_SET_PREVIEWRATE, 66, 0);
SendMessage(hMyWindow, WM_CAP_SET_PREVIEW, true , 0);
SendMessage(hMyWindow,WM_CAP_DLG_VIDEOSOURCE,0,0);


//RECORDING CODE


p=SendMessage(hMyWindow,WM_CAP_FILE_SET_CAPTURE_FILE , 0,(LPARAM) (LPVOID) cname1);
                 p=  SendMessage(hMyWindow, WM_CAP_GET_SEQUENCE_SETUP, sizeof(CaptureParams),(LPARAM) (LPVOID)(LPCAPTUREPARMS)&CaptureParams);
                 CaptureParams.dwRequestMicroSecPerFrame=14286;/// its for 70 fps(1000000/70) bt giving fps of 60
                 CaptureParams.fYield=1;

                   //p=  SendMessage(hMyWindow, WM_CAP_GET_SEQUENCE_SETUP, sizeof(CaptureParams),(LPARAM) (LPVOID)(LPCAPTUREPARMS)&CaptureParams);
                 p=  SendMessage(hMyWindow, WM_CAP_SET_SEQUENCE_SETUP, sizeof(CaptureParams),(LPARAM) (LPVOID)(LPCAPTUREPARMS)&CaptureParams);
                 p=SendMessage(hMyWindow, WM_CAP_SEQUENCE, 0, 0);





                 p=SendMessage(hMyWindow1,WM_CAP_FILE_SET_CAPTURE_FILE , 0,(LPARAM) (LPVOID) cname2);
                 p=  SendMessage(hMyWindow1, WM_CAP_GET_SEQUENCE_SETUP, sizeof(CaptureParams),(LPARAM) (LPVOID)(LPCAPTUREPARMS)&CaptureParams);
                CaptureParams.dwRequestMicroSecPerFrame=14286;/// its for 70 fps(1000000/70) bt giving fps of 60
                 CaptureParams.fYield=1;
                 p=  SendMessage(hMyWindow1, WM_CAP_SET_SEQUENCE_SETUP, sizeof(CaptureParams),(LPARAM) (LPVOID)(LPCAPTUREPARMS)&CaptureParams);
SendMessage(hMyWindow1, WM_CAP_SEQUENCE, 0, 0);
SetWindowText(GetDlgItem(hDlg, IDC_START_CAPTURE), "Stop Capture");

推荐答案

这听起来很愚蠢，但是正试图从2个不同的来源记录到同一文件中?可能是问题吗?！?

That may sound stupid, but are trying to record to the same file from 2 different sources? that might be the problem?!?

请确保为WM_CAP_DRIVER_CONNECT使用正确的索引值.

谢谢

Hi,

Please make sure that you are using the right index value for WM_CAP_DRIVER_CONNECT.

Thanks

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