如何使用Windows Media Encoder抓取攝象頭視頻并且保存為視頻文件？？

?？莺?/a> 2012-05-09

如何使用Windows Media Encoder抓取攝象頭視頻并且保存為視頻文件？？[問題點數(shù):100分，結(jié)帖人:luguanxiang]

luguanxiang
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樓主發(fā)表于：2005-08-07 22:34:32

如何使用Windows Media Encoder抓取攝象頭視頻并且保存為視頻文件？？

想做一個可以錄制視頻到文件的程序。

我參考了Windows Media Encoder 9 Series SDK，但目前還是沒有什么頭緒。請教各位了。

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bitsbird
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#1樓得分：20回復于：2005-08-07 22:45:18

http://www./cs/media/ChangeVideoSigFormat.asp

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malingxian
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#2樓得分：80回復于：2005-08-08 08:12:38

可以不用Windows Media Encoder吧？
下面是cam.vb:
Imports System
Imports System.Runtime.InteropServices
Imports System.Drawing
Imports System.Drawing.Imaging

Public Class Cam

Private Const WM_USER As Integer = &H400
Private Const WS_CHILD As Integer = &H40000000
Private Const WS_VISIBLE As Integer = &H10000000
Private Const WM_CAP_START As Integer = WM_USER
Private Const WM_CAP_STOP As Integer = WM_CAP_START + 68
Private Const WM_CAP_DRIVER_CONNECT As Integer = WM_CAP_START + 10
Private Const WM_CAP_DRIVER_DISCONNECT As Integer = WM_CAP_START + 11
Private Const WM_CAP_SAVEDIB As Integer = WM_CAP_START + 25
Private Const WM_CAP_GRAB_FRAME As Integer = WM_CAP_START + 60
Private Const WM_CAP_SEQUENCE As Integer = WM_CAP_START + 62
Private Const WM_CAP_FILE_SET_CAPTURE_FILEA As Integer = WM_CAP_START + 20
Private Const WM_CAP_SEQUENCE_NOFILE As Integer = WM_CAP_START + 63
Private Const WM_CAP_SET_OVERLAY As Integer = WM_CAP_START + 51
Private Const WM_CAP_SET_PREVIEW As Integer = WM_CAP_START + 50
Private Const WM_CAP_SET_CALLBACK_VIDEOSTREAM As Integer = WM_CAP_START + 6
Private Const WM_CAP_SET_CALLBACK_ERROR As Integer = WM_CAP_START + 2
Private Const WM_CAP_SET_CALLBACK_STATUSA As Integer = WM_CAP_START + 3
Private Const WM_CAP_SET_CALLBACK_FRAME As Integer = WM_CAP_START + 5
Private Const WM_CAP_SET_SCALE As Integer = WM_CAP_START + 53
Private Const WM_CAP_SET_PREVIEWRATE As Integer = WM_CAP_START + 52

Public Const WM_CAP_GET_CAPSTREAMPTR = WM_CAP_START + 1

Public Const WM_CAP_SET_CALLBACK_STATUS = WM_CAP_START + 3
Public Const WM_CAP_SET_CALLBACK_YIELD = WM_CAP_START + 4
Public Const WM_CAP_SET_CALLBACK_WAVESTREAM = WM_CAP_START + 7
Public Const WM_CAP_GET_USER_DATA = WM_CAP_START + 8
Public Const WM_CAP_SET_USER_DATA = WM_CAP_START + 9

Public Const WM_CAP_DRIVER_GET_NAME = WM_CAP_START + 12
Public Const WM_CAP_DRIVER_GET_VERSION = WM_CAP_START + 13
Public Const WM_CAP_DRIVER_GET_CAPS = WM_CAP_START + 14

Public Const WM_CAP_FILE_SET_CAPTURE_FILE = WM_CAP_START + 20
Public Const WM_CAP_FILE_GET_CAPTURE_FILE = WM_CAP_START + 21
Public Const WM_CAP_FILE_ALLOCATE = WM_CAP_START + 22
Public Const WM_CAP_FILE_SAVEAS = WM_CAP_START + 23
Public Const WM_CAP_FILE_SET_INFOCHUNK = WM_CAP_START + 24
Public Const WM_CAP_FILE_SAVEDIB = WM_CAP_START + 25

Public Const WM_CAP_EDIT_COPY = WM_CAP_START + 30

Public Const WM_CAP_SET_AUDIOFORMAT = WM_CAP_START + 35
Public Const WM_CAP_GET_AUDIOFORMAT = WM_CAP_START + 36

Public Const WM_CAP_DLG_VIDEOFORMAT = WM_CAP_START + 41
Public Const WM_CAP_DLG_VIDEOSOURCE = WM_CAP_START + 42
Public Const WM_CAP_DLG_VIDEODISPLAY = WM_CAP_START + 43
Public Const WM_CAP_GET_VIDEOFORMAT = WM_CAP_START + 44
Public Const WM_CAP_SET_VIDEOFORMAT = WM_CAP_START + 45
Public Const WM_CAP_DLG_VIDEOCOMPRESSION = WM_CAP_START + 46

Public Const WM_CAP_GET_STATUS = WM_CAP_START + 54
Public Const WM_CAP_SET_SCROLL = WM_CAP_START + 55

Public Const WM_CAP_GRAB_FRAME_NOSTOP = WM_CAP_START + 61

Public Const WM_CAP_SET_SEQUENCE_SETUP = WM_CAP_START + 64
Public Const WM_CAP_GET_SEQUENCE_SETUP = WM_CAP_START + 65
Public Const WM_CAP_SET_MCI_DEVICE = WM_CAP_START + 66
Public Const WM_CAP_GET_MCI_DEVICE = WM_CAP_START + 67
Public Const WM_CAP_ABORT = WM_CAP_START + 69

Public Const WM_CAP_SINGLE_FRAME_OPEN = WM_CAP_START + 70
Public Const WM_CAP_SINGLE_FRAME_CLOSE = WM_CAP_START + 71
Public Const WM_CAP_SINGLE_FRAME = WM_CAP_START + 72

Public Const WM_CAP_PAL_OPEN = WM_CAP_START + 80
Public Const WM_CAP_PAL_SAVE = WM_CAP_START + 81
Public Const WM_CAP_PAL_PASTE = WM_CAP_START + 82
Public Const WM_CAP_PAL_AUTOCREATE = WM_CAP_START + 83
Public Const WM_CAP_PAL_MANUALCREATE = WM_CAP_START + 84

'// Following added post VFW 1.1
Public Const WM_CAP_SET_CALLBACK_CAPCONTROL = WM_CAP_START + 85

'// Defines end of the message range
Public Const WM_CAP_END = WM_CAP_SET_CALLBACK_CAPCONTROL

Private hWndC As IntPtr
Private bStat As Boolean = False

Private mControlPtr As IntPtr
Private mWidth As Integer
Private mHeight As Integer
Private mLeft As Integer
Private mTop As Integer

<DllImport( "avicap32.dll ")> _
Private Shared Function capCreateCaptureWindowA(ByVal lpszWindowName() As Byte, ByVal dwStyle As Integer, ByVal x As Integer, ByVal y As Integer, ByVal nWidth As Integer, ByVal nHeight As Integer, ByVal hWndParent As IntPtr, ByVal nID As Integer) As IntPtr
End Function

<DllImport( "avicap32.dll ")> _
Private Shared Function capGetVideoFormat(ByVal hWnd As IntPtr, ByVal psVideoFormat As IntPtr, ByVal wSize As Integer) As Integer
End Function

<DllImport( "User32.dll ")> _
Private Shared Function SendMessage(ByVal hWnd As IntPtr, ByVal wMsg As Integer, ByVal wParam As Integer, ByVal lParam As Long) As Boolean
End Function

Function capDlgVideoFormat() As Boolean
capDlgVideoFormat = SendMessage(hWndC, WM_CAP_DLG_VIDEOFORMAT, 0, 0)
End Function
Function capDlgVideoSource() As Boolean
capDlgVideoSource = SendMessage(hWndC, WM_CAP_DLG_VIDEOSOURCE, 0, 0)
End Function
Function capDlgVideoDisplay() As Boolean
capDlgVideoDisplay = SendMessage(hWndC, WM_CAP_DLG_VIDEODISPLAY, 0, 0)
End Function
Function capDlgVideoCompression() As Boolean
capDlgVideoCompression = SendMessage(hWndC, WM_CAP_DLG_VIDEOCOMPRESSION, 0, 0)
End Function

'/// <summary>
'/// 初始化攝像頭
'/// </summary>
'/// <param name= "handle "> 控件的句柄 </param>
'/// <param name= "left "> 開始顯示的左邊距 </param>
'/// <param name= "top "> 開始顯示的上邊距 </param>
'/// <param name= "width "> 要顯示的寬度 </param>
'/// <param name= "height "> 要顯示的長度 </param>
Public Sub New(ByVal handle As IntPtr, ByVal left As Integer, ByVal top As Integer, ByVal width As Integer, ByVal height As Integer)
mControlPtr = handle
mWidth = width
mHeight = height
mLeft = left
mTop = top
End Sub

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malingxian
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#3樓得分：0回復于：2005-08-08 08:12:51

'/// <summary>
'/// 開始顯示圖像
'/// </summary>
Public Sub Start()
If bStat Then
Return
End If
bStat = True
Dim lpszName(99) As Byte

hWndC = capCreateCaptureWindowA(lpszName, WS_CHILD Or WS_VISIBLE, mLeft, mTop, mWidth, mHeight, mControlPtr, 0)

If hWndC.ToInt32() <> 0 Then
SendMessage(hWndC, WM_CAP_SET_CALLBACK_VIDEOSTREAM, 0, 0)
SendMessage(hWndC, WM_CAP_SET_CALLBACK_ERROR, 0, 0)
SendMessage(hWndC, WM_CAP_SET_CALLBACK_STATUSA, 0, 0)
SendMessage(hWndC, WM_CAP_DRIVER_CONNECT, 0, 0)
SendMessage(hWndC, WM_CAP_SET_SCALE, 1, 0)
SendMessage(hWndC, WM_CAP_SET_PREVIEWRATE, 66, 0)
SendMessage(hWndC, WM_CAP_SET_OVERLAY, 1, 0)
SendMessage(hWndC, WM_CAP_SET_PREVIEW, 1, 0)
End If

Return
End Sub

'/// <summary>
'/// 停止顯示
'/// </summary>
Public Sub [Stop]()
SendMessage(hWndC, WM_CAP_DRIVER_DISCONNECT, 0, 0)
bStat = False
End Sub

'/// <summary>
'/// 抓圖
'/// </summary>
'/// <param name= "path "> 要保存bmp文件的路徑 </param>
Public Sub GrabImage(ByVal path As String)
Dim hBmp As IntPtr = Marshal.StringToHGlobalAnsi(path)
SendMessage(hWndC, WM_CAP_SAVEDIB, 0, hBmp.ToInt64())
End Sub

'/// <summary>
'/// 錄像
'/// </summary>
'/// <param name= "path "> 要保存avi文件的路徑 </param>
Public Sub Kinescope(ByVal path As String)
Dim hBmp As IntPtr = Marshal.StringToHGlobalAnsi(path)
SendMessage(hWndC, WM_CAP_FILE_SET_CAPTURE_FILEA, 0, hBmp.ToInt64())
SendMessage(hWndC, WM_CAP_SEQUENCE, 0, 0)
End Sub

'/// <summary>
'/// 停止錄像
'/// </summary>
Public Sub StopKinescope()
SendMessage(hWndC, WM_CAP_STOP, 0, 0)
End Sub
End Class

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malingxian
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#4樓得分：0回復于：2005-08-08 08:13:15

下面是 Form1.vb

Public Class Form1
Inherits System.Windows.Forms.Form

Private cccap As Cam
#Region " Windows 窗體設(shè)計器生成的代碼 "

Public Sub New()
MyBase.New()

'該調(diào)用是 Windows 窗體設(shè)計器所必需的。
InitializeComponent()

'在 InitializeComponent() 調(diào)用之后添加任何初始化

End Sub

'窗體重寫 dispose 以清理組件列表。
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub

'Windows 窗體設(shè)計器所必需的
Private components As System.ComponentModel.IContainer

'注意: 以下過程是 Windows 窗體設(shè)計器所必需的
'可以使用 Windows 窗體設(shè)計器修改此過程。
'不要使用代碼編輯器修改它。
Friend WithEvents Button1 As System.Windows.Forms.Button
Friend WithEvents picView As System.Windows.Forms.PictureBox
Friend WithEvents Button2 As System.Windows.Forms.Button
Friend WithEvents Button3 As System.Windows.Forms.Button
Friend WithEvents Button4 As System.Windows.Forms.Button
Friend WithEvents Button5 As System.Windows.Forms.Button
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.picView = New System.Windows.Forms.PictureBox
Me.Button1 = New System.Windows.Forms.Button
Me.Button2 = New System.Windows.Forms.Button
Me.Button3 = New System.Windows.Forms.Button
Me.Button4 = New System.Windows.Forms.Button
Me.Button5 = New System.Windows.Forms.Button
Me.SuspendLayout()
'
'picView
'
Me.picView.Anchor = CType((((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _
Or System.Windows.Forms.AnchorStyles.Left) _
Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
Me.picView.Location = New System.Drawing.Point(16, 16)
Me.picView.Name = "picView "
Me.picView.Size = New System.Drawing.Size(640, 480)
Me.picView.TabIndex = 0
Me.picView.TabStop = False
'
'Button1
'
Me.Button1.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left), System.Windows.Forms.AnchorStyles)
Me.Button1.Location = New System.Drawing.Point(244, 540)
Me.Button1.Name = "Button1 "
Me.Button1.Size = New System.Drawing.Size(56, 24)
Me.Button1.TabIndex = 1
Me.Button1.Text = "start "
'
'Button2
'
Me.Button2.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left), System.Windows.Forms.AnchorStyles)
Me.Button2.Location = New System.Drawing.Point(304, 540)
Me.Button2.Name = "Button2 "
Me.Button2.Size = New System.Drawing.Size(56, 24)
Me.Button2.TabIndex = 1
Me.Button2.Text = "stop "
'
'Button3
'
Me.Button3.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left), System.Windows.Forms.AnchorStyles)
Me.Button3.Location = New System.Drawing.Point(380, 540)
Me.Button3.Name = "Button3 "
Me.Button3.Size = New System.Drawing.Size(56, 24)
Me.Button3.TabIndex = 1
Me.Button3.Text = "cap "
'
'Button4
'
Me.Button4.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left), System.Windows.Forms.AnchorStyles)
Me.Button4.Location = New System.Drawing.Point(352, 508)
Me.Button4.Name = "Button4 "
Me.Button4.Size = New System.Drawing.Size(124, 24)
Me.Button4.TabIndex = 1
Me.Button4.Text = "色彩校正 "
'
'Button5
'
Me.Button5.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left), System.Windows.Forms.AnchorStyles)
Me.Button5.Location = New System.Drawing.Point(164, 512)
Me.Button5.Name = "Button5 "
Me.Button5.Size = New System.Drawing.Size(124, 24)
Me.Button5.TabIndex = 1
Me.Button5.Text = "畫面大小 "
'
'Form1
'
Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
Me.ClientSize = New System.Drawing.Size(792, 573)
Me.Controls.Add(Me.Button1)
Me.Controls.Add(Me.picView)
Me.Controls.Add(Me.Button2)
Me.Controls.Add(Me.Button3)
Me.Controls.Add(Me.Button4)
Me.Controls.Add(Me.Button5)
Me.Name = "Form1 "
Me.Text = "Form1 "
Me.ResumeLayout(False)

End Sub

#End Region

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
cccap = New Cam(picView.Handle, 0, 0, picView.Width, picView.Height)
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
cccap.Start()
End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
cccap.Stop()
End Sub

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
cccap.GrabImage( "c:\test.bmp ")
End Sub

Private Sub Form1_Closed(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Closed
cccap = Nothing
End Sub

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
cccap.capDlgVideoSource()
End Sub

Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
cccap.capDlgVideoFormat()
End Sub
End Class