Recording Video Using Borland Delphi 7+Dspack

Beside to capture picture, the DSPack component also can be used to record or capture video. Besides, the DSPack component still have a lot of function, such as to detect a movement (motion detect), to recognize face (face recognition), to detect the edge of picture (edge detection) etc.

To make video recorder using DSPack, enter the component below:

No.	Component  Pallete	Component Name	Property	Value
1	Ds Pack	Filter1	FilterGraph	FilterGraph1
		VideoWindow1	FilterGraph	FilterGraph1
		FilterGraph1	Mode	gmCapture
	Standard	Button1	Caption	Choose Folder
			Name	Buttonsavefolder1
	Standard	Button2	Caption	Start Save Video
			Name	Buttonsave1
	Standard	Button3	Caption	Close
			Name	ButtonClose
	Win32	StatusBar1	Check the note under the table
Double click the component and then will appear, Then Click the object inspector and type Video1 on Text Property

Manage the image detail become as follows:

  

Picture1. Image Program Design.

Before type the source code, please declare this following global variable

After that enter the source code program as follows:

No	Component Name	Event	Source Code
	Form1	OnCreate	var i : integer; begin CapEnum:= TSysDevEnum.Create(CLSID_VideoInputDeviceCategory); for i := 0 to CapEnum.CountFilters - 1 do begin combobox1.Items.Add(CapEnum.Filters[i].FriendlyName); buttonsave1.Enabled:=false; buttonsavefolder1.Enabled:=false; end;
	ComboBox1	OnChange	FilterGraph1.ClearGraph; FilterGraph1.Active := false; Filter1.BaseFilter.Moniker := CapEnum.GetMoniker(combobox1.ItemIndex); FilterGraph1.Active := true; with FilterGraph1 as ICaptureGraphBuilder2 do Renderstream(@PIN_CATEGORY_PREVIEW, nil, Filter1 as IBaseFilter,nil, VideoWindow1 as IbaseFilter); FilterGraph1.Play; buttonsavefolder1.Enabled:=true;
	Buttonsavefolder1	OnClick	if savedialog1.Execute = true then buttonsave1.Enabled:=true;
	Buttonsave1	OnClick	var multiplexer: IBaseFilter; Writer: IFileSinkFilter; i:integer; begin VideoMediaTypes.MediaDescription[i]; savefile1:=savedialog1.FileName   ;  if FilterGraph1.Active then FilterGraph1.Active:=false; FilterGraph1.ClearGraph; //active filter graph FilterGraph1.Active:=true;   // now render streams with FilterGraph1 as IcaptureGraphBuilder2 do begin     // set the output filename SetOutputFileName(MEDIASUBTYPE_avi, PWideChar(saveFile1), multiplexer, Writer); // Connect Video preview (VideoWindow) if Filter1.BaseFilter.DataLength > 0 then RenderStream(@PIN_CATEGORY_PREVIEW, nil, Filter1 as IBaseFilter, nil , VideoWindow1 as IBaseFilter); // Connect Video capture streams if Filter1.FilterGraph <> nil then RenderStream(@PIN_CATEGORY_CAPTURE, nil, Filter1 as IBaseFilter, nil, multiplexer as IBaseFilter); end; FilterGraph1.Play; //show folder penyimpanan file StatusBar1.Panels.Items[0].Text:= saveFile1;
	ButtonClose	OnClick	application.Terminate;

The Result Of The Program Execution is as follows:

 

 Picture2. Result of Application  Execution

 I hope this article can give benefit to the visitors, readers, developer and me. Thanks for visiting and availability for sharing this article by pressing 

Share this on Facebook

Tweet this

or just press like button under this posting