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 problems with s-video connection

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T O P I C    R E V I E W
Paruyr Posted - Nov 19 2012 : 07:23:17
Hello

imageen 4.1.0
Delphi 7

We are having problem with s-video connection when try to show the video coming in from the camera connected to our computer with s-video cable. We use TImageenview component. When we try to switch to that s-video source it hangs and then the whole system crashes ad computer starts rebooting.
The same thing happens when we try the demo applications which come with imnageen installation.
Can anyone advice please ?

Thank you,
Paruyr.

Paruyr
6   L A T E S T    R E P L I E S    (Newest First)
fab Posted - Dec 14 2012 : 04:10:52
Hi,
first parameter of SetVideoInput should be the capture card. The second (optional) parameter specifies the actual input of that card. Please try to execute:

imageenview1.IO.DShowParams.SetVideoInput(combobox1.itemindex, 1);

or

imageenview1.IO.DShowParams.SetVideoInput(combobox1.itemindex, 2);

etc...
Paruyr Posted - Dec 03 2012 : 12:16:14
Thank you for helping me, fabrizio

here is the code:

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ieview, imageenview;

type
TForm1 = class(TForm)
ImageEnView1: TImageEnView;
ComboBox1: TComboBox;
Button1: TButton;
Button2: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure ImageEnView1DShowNewFrame(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
{ load video input list }
combobox1.items := imageenview1.IO.DShowParams.VideoInputs;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
{ activate vidoe for selected surce }
imageenview1.IO.DShowParams.Disconnect;
imageenview1.IO.DShowParams.SetVideoInput(combobox1.itemindex);
imageenview1.IO.DShowParams.EnableSampleGrabber := true;
imageenview1.IO.DShowParams.RenderAudio := true;
imageenview1.IO.DShowParams.Connect;
imageenview1.IO.DShowParams.Run;
end;

procedure TForm1.ImageEnView1DShowNewFrame(Sender: TObject);
begin
{show frame }
with (Sender as timageenview)
do begin
IO.DShowParams.GetSample(IEBitmap);
Update;
end;
end;

end.


Paruyr
fab Posted - Dec 03 2012 : 00:44:00
Please could you post the code?
Paruyr Posted - Nov 26 2012 : 07:33:03
I am getting the list using ...IO.DShowParams.VideoInputs
and then ...IO.DShowParams.SetVideoInput to setup the input.

Paruyr
fab Posted - Nov 23 2012 : 10:49:43
How do you switch to the s-video source? Are you using DirectShow examples?
Ronald Posted - Nov 20 2012 : 11:53:17
Hi,

ImageEn is a wonderful product. however, for video handling, you may want to have a look at DSPack, which is siuted for video.

http://code.google.com/p/dspack/downloads/list

Regards, Ronald