I need to capture still's from 2 different video cameras. I am using a 4 channel usb dvr. I have tried to use DirectShow but I only get 1 camera. How can I get a list of all the cameras connected to my pc. I use Visual Studio 2008.
View 2 RepliesI am monitoring 12 video feeds from video cameras. Now I have more than 12 cameras, I have 134. But I will only monitor 12 cameras at a time. By Monitoring I mean, I have 12 small video screens on the form that I can see the video. The way I know which cameras are active, so I can monitor them is by a boolean value in a sql database. I run a Store Procedure in my program, and spit out the results in a XML file. I then read the XML file in a loop. This XML file will have a list of the camera names I need to monitor.
So that is for 12 video feeds. Now, I want to have a NEXT or FORWARD button on my monitor form. So when I click this it will give me the next group of cameras, 13 to 24. Now if I only have15 cameras that are active, that means the first group is 1 to 12, then the second group is 13 to 15 cameras. So I will only have 3 to monitor on the second grouping. One thought I had was to have another field in my table to mark as already as an active monitor, so when I run the SP, i will not select that row. But I need to select 12 at a time. Or I can make a number of xml files, one xml file for each grouping of 12, but I need to figure out how I can select the next group without re-selecting the first group. I have no code at the moment, I'm on my non-programming computer.
i`m trying to understand the following code for video capturing but some things are very strange for me explain briefly the below code. If you can give any articles. Basically i`m trying to create my own video capturing program and i want to understand this one before starting my own.[code...]
View 4 RepliesI have a web cam connected through USB,I capturing and saving video it with avicap32.dll and user32.dll.But in the same time I need to starting other hardware and working with it trough COM port during capturing. And here appearing a problem, because then I send a command for start video capturing:
SendMessage(hWnd, WM_CAP_SEQUENCE, 0, 0) ' start video capture
the executing code stops at this line until I click to stop to capture. But in the capturing time I need to work with my hardware, to obtain the data from it, and after that to stop capturing.To make to work simultaneous video capturing and my hardware or its impossible to do that with avicap32.dll and user32.dll.
I need to create a program that can capture video and image. The program is very simple, it just have a screen and a button labeled "Capture". When I click capture, it will capture the image and save it in drive "C:".
View 1 RepliesHaving been the victim of a robbery recently, I have turned my attention to web cameras used in conjunction with VB as a security system. I am well aware that there are many commercial products available to do the job but using VB has captured my imagination from a coding point of view.
There is a very basic bit of VB code that I copied from VB-HELPER which also appears in many other web sites but none really explain what the various lines of code actually do. The code is posted below:
[Code]...
I'm gonna make a ROV and a UAV. It all gonna be controlled by my computer.To controll the units, I'm using Microcontrollers from Atmel.So what I'm trying to do now, is to implant cameras wirelessly.I'd liked to insert cupple of them, or cupple webcams connected to my USB-port.Is there possibility to have 2 or more cameras in my project?
View 1 RepliesI need to get still image from scanners,cameras and web cam in a wpf-Winform application
can i use WIA in vista or window7
A while back, I was graciously provided the following code which would take a screenshot of a 16 grid layout of cameras:
[Code]...
I have a vb.net project which i have inserted pictures and video. I inserted a video clip using the Windows Media Player control and it does work. The issue i have is that i can't move the program to another computer because the pathname for the video will be wrong. I know i could change the pathname when i move it but this is not practical because i need to present this program. Does anybody know how to make the video accessible no matter what location the program is at?
View 6 RepliesI creat audio video chat and when calling receivng video and client video is together...I want that client move his or her webcam video where want...as I know it name DROP&DRAP but I`m not know how to do it...
View 5 RepliesI was wondering if it was possible to have a program open Firefox, and have it open a bunch of tabs that all go to a link with a video, and then have it automatically play that video?
View 4 RepliesI would like to create thumbnails into a VB (2005 or 2010) form from video files.
I have a directory (in my hard drive) with video files (.mpg).
How to show video thumbnails for each video file?
My VB code (for images) is attached below and I want to convert it in order to manage video files.
Private Sub ThumbButton_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles ThumbButton.Click
Dim imagepath As String
[Code].....
i want to make a video streaming server or a Video Lan chat programe in VB.net
View 1 RepliesHow can i record a video via webcam in visual basic application and then display the video on user's request either live or recorded video.
how to develop video webcam recording application.
i want to buffer a video file on client side when it request.. what syantax i use to buffer the video the video in client's media player
View 1 Repliesis it possible to use avicap32 to capture video with a web cam and save the video as a wmv format instead of avi one
View 1 Repliescan play a SWF video but not a Flash Video?
View 14 RepliesI want to capture a still picture in any format like .png,.jpg,.bmp etc. using a webcam.And want to save that in directory.
View 3 RepliesHow can I capture text from cmd.exe window? Tried GetWindowText, but this only returns the title.
View 6 RepliesI am using a DataGridView, which is bound to a dataset. There is a bindingNavigator as well.
when a user deletes a row by clicking "bindingNavigatorDeleteItem" button, I am trying to get the row being deleted.
private void bindingNavigatorDeleteItem_Click(object sender, EventArgs e)
{
int crow = gridEventType.CurrentCell.RowIndex;
but it returns the newly selected row AFTER deletion of a selected row.
so, If I have two rows
0
1
2
and I delete 2
crow is 1, not 2.
Am I missing something here?
2. How do I know whether certain rows are modified in datagridview?
I was creating some complex applications in Visual Basic .NET 2008 and since they are in the testing phase right now, people manage to find an error or two every so often that causes the program to crash. The problem is that there is a tracking piece to it that logs who is currently using the programs. When a user logs in, it logs that they are currently logged in, and if the form close event is fired, the log is deleted to show that they have closed it.
Now my problem comes whenever the form crashes from an error since it won't trigger the close event and therefore makes the log become inaccurate. My question is if it is possible to capture any error that the form would have in the form of an event?
I am trying to make a simple personal program and cannot figure out how to capture a section of the screen.I want it to work like prt scr does except it captures a specified rectangle instead of the entire screen. I am thinking I have to use Drawing.Graphics but am not sure.
View 11 RepliesThe below is my program so far
Public Class Form1
Private Display As Boolean
Private WithEvents tmr As Windows.Forms.Timer
[code]....
Upon clicking the button a series of letters are displayed to the screen.I would like to be able to capture the time taken to press the letter shown.
I am trying to modifying the "Math Quiz" tutorial to be more user friendly.
The initial tutorial does not consider the users efforts to answer the math problems as quickly as possible.
The problem is that you must use the mouse or tab key rather than the "enter" key to move to the next control after answering. I believe using the "Enter key to be much more intuitive.
Therefore, I wish to modify the program to either:
1. Check the KeyPress event of the NumberUpDown controls to watch for the "Enter" key to be pressed, and if it is, check to ensure that the current NumberUpDown control is not empty (= Nothing) and if both are True, to then TAB to the next control in the TAB order; OR
2. Uses the PreviewKeyDown event to transpose the "Enter" into a "Tab" automatically so the application will then TAB to the next control in the TAB order.
With all of the new changes to VB 2010 from the last version I actually used professionally (VB6), things are REALLY different, so I no longer know how to accomplish this same task in the new manner. especially if it contains working CODE, because I have always learned better the first time from an example. here is my version of the tutorial Code:
'--- Create a Random object to generate random numbers.
Private objRandomValue As New Random
'--- The Integers will store the numbers for the
' addition problem.
[Code]....
Okay, so I know how to capture a screenshot of the Active Window, but if the active window is a game, then the screen is just black. What do I need to do to be able to also capture ingame screens?
View 3 RepliesI was wondering if there is an easy way to analyse sound that is sent to the speakers (just before it's played). For example when playing a song in winamp or windows media player. Or is it easier to write plugins for those programs to form an interface with your own program?
View 2 RepliesI have a datagridview (unbound). Fields are Name, Family Name and Phone No and a checkbox colum.
There are ten rows in that DataGridView.
There is an OK button
I need to get message of showing which rows user has checked. The message should appear when user clicks OK button. There could be several message, checking each row one by one, in a loop.
I am not able to get this message. I tried following code in OK button
Dim strCB As String = dgvChooseQs.Rows(0).Cells(3).Value.ToString
Cell(3) is my checkbox. Donot consider Rows(0), at the moment I am just checking value at row 0
I have read and tried a dozen or more examples of trying to capture the Enter key in a datagrid, but I have yet to find something that works. My scenario is :
ds.Tables.Add(dt)
dt.Columns.Add("Inventory Nr", GetType(System.String))
dt.Columns.Add("Cases", GetType(System.Int32)) Inventory Nr in the next row.
[code].....
I'm currently trying to Capture through DirectSound, I've been trying toying around with WaveLib(Ported to VB) but this is very confusing. Anyway, I cant figure out how I am supposed to do this and would like some assistance. The end goal of this project is to: Record Microphone > Encode with Speex Codec > Send over UDP > Decode > Play on Speakers
View 3 Replies