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Re: How to select only one capture device Started by sdecorme at 07-22-2008 5:26. Topic has 7 replies. LEAD Support Fo... » Enduser » Capture & Conve... » Re: How to select only one capture device

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07-22-2008, 5:26 sdecorme Joined on 07-22-2008 FRANCE Posts 30 How to select only one capture device Hi On my computer I've lot of video input device and it change between different configuration I need to be sure that each AxltmmCaptureCtrl have is own device for example: AxltmmCaptureCtrl1 with Card1 AxltmmCaptureCtrl2 with Card2 AxltmmCaptureCtrl3 with Card3 The example give a listing but on my system the position in the listing can change I'm would like to do it in c# thanks    Report

07-22-2008, 10:46 Adam Boulad Joined on 09-16-2007 Posts 541 Re: How to select only one capture device Hello, If you set the AxltmmCaptureCtrl1.VideoDevices.Selection to the desired device number, the control would use that device. However, if the numbers change from time to time, you can search for the device using AxltmmCaptureCtrl1.VideoDevices.Find() before assigning the index you want. Adam Boulad LEADTOOLS Technical Support    Report

07-23-2008, 5:30 sdecorme Joined on 07-22-2008 FRANCE Posts 30 Re: How to select only one capture device Thanks I find my way with your example. Now I'v another problem , I've two AxltmmCaptureCtrl with 2 video acquisition card and of course I've to switch between everything and I've a problem when I use 2 AxltmmCaptureCtrl.an With one AxltmmCaptureCtrl  I can swicth video to another but when I use 2 AxltmmCaptureCtrl the video doesn't change. I  use C#         private void EchangeVideo()         {             AxltmmCaptureCtrl1.Preview = false ;             AxltmmCaptureCtrl2.Preview = false ;             //charge les possibilités d'outils d'acquisition             int countVideo1 = AxltmmCaptureCtrl1.VideoDevices.Count;             string[] videoDeviceList1 = new string[countVideo1];             for (int i = 0; i < countVideo1; i++) videoDeviceList1[i] = AxltmmCaptureCtrl1.VideoDevices.Item(i).FriendlyName;             int countVideo2 = AxltmmCaptureCtrl2.VideoDevices.Count;             string[] videoDeviceList2 = new string[countVideo2];             for (int i = 0; i < countVideo2; i++) videoDeviceList2[i] = AxltmmCaptureCtrl2.VideoDevices.Item(i).FriendlyName;                         if (VideoJour == true) //flag to change video mode             {                 VideoJour = false;                 try                 {                     AxltmmCaptureCtrl1.VideoDevices.Selection = 2;                     AxltmmCaptureCtrl1.VideoCaptureSizes.Selection = 13;                     AxltmmCaptureCtrl1.Preview = true;                 }                 catch (Exception)                 {                 }                 try                 {                     AxltmmCaptureCtrl2.VideoDevices.Selection = 3;                     AxltmmCaptureCtrl2.VideoCaptureSizes.Selection = 1;                     AxltmmCaptureCtrl2.Preview = true;                 }                 catch (Exception)                 {                 }             }             else             {                 VideoJour = true;                 try                 {                     AxltmmCaptureCtrl1.VideoDevices.Selection = 3;                     AxltmmCaptureCtrl1.VideoCaptureSizes.Selection = 13;                     AxltmmCaptureCtrl1.Preview = true;                 }                 catch (Exception)                 {                 }                 try                 {                     AxltmmCaptureCtrl2.VideoDevices.Selection = 2;                     AxltmmCaptureCtrl2.VideoCaptureSizes.Selection = 1;                     AxltmmCaptureCtrl2.Preview = true;                 }                 catch (Exception)                 {                 }             }         } Any ideas ? thanks    Report

07-23-2008, 8:02 sdecorme Joined on 07-22-2008 FRANCE Posts 30 Re: How to select only one capture device One more question I use the two same acquisition system and they have the same name in the system properties sot I can't use                     AxltmmCaptureCtrl1.VideoDevices.Selection = AxltmmCaptureCtrl1.VideoDevices.Find("DFG / USB2 - lt"); with this fonction the selection work fine                     int countVideo2 = AxltmmCaptureCtrl2.VideoDevices.Count;                     string[] videoDeviceList2 = new string[countVideo2];                     for (int i = 0; i < countVideo2; i++) videoDeviceList2[i] = AxltmmCaptureCtrl2.VideoDevices.Item(i).FriendlyName;                     AxltmmCaptureCtrl2.VideoDevices.Selection = 2;                     AxltmmCaptureCtrl2.VideoCaptureSizes.Selection = 1;                     AxltmmCaptureCtrl2.Preview = true; but if I use my software on another Computer the VideoDevices.Selection will not be the same Is there another way to choose my device ? Thanks    Report

07-23-2008, 11:14 Adam Boulad Joined on 09-16-2007 Posts 541 Re: How to select only one capture device About your second post, I'm not sure that understand the problem, what exactly do you mean by switching the video? Does this happen when you try change the VideoDevices or when you change the VideoCaptureSizes? What exactly do you mean by 'Switching videos'? Can you please provide me with more details? About the third post, if you have two devices with the same friendly name, there will be instances in VideoDevices with different indices. In this case,  the user should select the device that he wants to use. If you have a different questions, please create a new forum post and give details regarding your question. Adam Boulad LEADTOOLS Technical Support    Report

08-11-2008, 3:30 sdecorme Joined on 07-22-2008 FRANCE Posts 30 Re: How to select only one capture device My 2 devices have exactly the same friendly name where can I find the indice you talk about. I've 2 AxltmmCaptureCtrl on my frame I to switch the video between this AxltmmCaptureCtrl. VideoA size1 with AxltmmCaptureCtrl1 VideoB size2 with AxltmmCaptureCtrl2 When I switch I want to do VideoB size1 with AxltmmCaptureCtrl1 VideoA size2 with AxltmmCaptureCtrl2 At the startup I have my 2 video but when I make the first switch I loose them.    Report

08-11-2008, 12:30 Adnan Ismail Joined on 07-31-2006 Posts 1,367 Re: How to select only one capture device For each of the 2 controls, you will have a list of devices. You simply set the index to one of the listed device indices. This means, if you want to switch, you do it like this: //Get the 2 index values: old1 = AxltmmCaptureCtrl1.VideoDevices.Selection old2 = AxltmmCaptureCtrl2.VideoDevices.Selection //Clear the selection for both controls AxltmmCaptureCtrl1.VideoDevices.Selection = -1 AxltmmCaptureCtrl2.VideoDevices.Selection = -1 //switch the 2 indices: AxltmmCaptureCtrl1.VideoDevices.Selection = old2 AxltmmCaptureCtrl2.VideoDevices.Selection = old1 Adnan Ismail LEADTOOLS Technical Support    Report

08-12-2008, 2:16 sdecorme Joined on 07-22-2008 FRANCE Posts 30 Re: How to select only one capture device It work thanks you [Y] See you on another post quickly [;)]    Report

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