怎么保存视频文件

Question

有一张H.264的视频压缩卡， 
  开始录象函数StartVideoCapture(ChannelHandle[i])；ChannelHandle[i]为通道句柄
  停止录象函数StopVideoCapture(ChannelHandle[i])；ChannelHandle[i]为通道句柄
 正确调用时返回均为0，
  请问怎么把录的内容保存为视频文件。

Answer 1

//开始视频
procedure TALVideoForm.OpenVideoClick(Sender: TObject);
begin
hWndC := capCreateCaptureWindowA(
  'My Own Capture Window',
  WS_CHILD or WS_VISIBLE ,
  Panel6.Left+Image1.Left,
  Panel6.Top+Image1.Top,
  Image1.Width,
  Image1.Height,
  ALVideoForm.Handle,
  0);
if hWndC <> 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_SEQUENCE_NOFILE, 1, 0);
SendMessage(hWndC, WM_CAP_SET_OVERLAY, 1, 0);
SendMessage(hWndC, WM_CAP_SET_PREVIEW, 1, 0);
OpenVideo.Enabled :=false;
CloseVideo.Enabled :=True;
SaveBMP.Enabled :=True;
StartAVI.Enabled :=True;
end;
//开始录象并保存
procedure TALVideoForm.StartAVIClick(Sender: TObject);
begin
if hWndC <> 0 then
   begin
    SaveDialog1.DefaultExt := 'avi';
    SaveDialog1.Filter := 'AVI files (*.avi)|*.avi';
    if SaveDialog1.Execute then
       begin
      CapturingAVI := true;
      SendMessage(hWndC,
      WM_CAP_FILE_SET_CAPTURE_FILEA,
      0,
      Longint(pchar(SaveDialog1.FileName)));
      SendMessage(hWndC, WM_CAP_SEQUENCE, 0, 0);
      end;
      
    end;
end;

Answer 2

说明上帖的定义
....
private
hWndC : THandle;
CapturingAVI : bool;
....
implementationconst WM_CAP_START = WM_USER;
const WM_CAP_STOP = WM_CAP_START + 68;
const WM_CAP_DRIVER_CONNECT = WM_CAP_START + 10;
const WM_CAP_DRIVER_DISCONNECT = WM_CAP_START + 11;
const WM_CAP_SAVEDIB = WM_CAP_START + 25;
const WM_CAP_GRAB_FRAME = WM_CAP_START + 60;
const WM_CAP_SEQUENCE = WM_CAP_START + 62;
const WM_CAP_FILE_SET_CAPTURE_FILEA = WM_CAP_START + 20;
const WM_CAP_SEQUENCE_NOFILE =WM_CAP_START+  63 ;
const WM_CAP_SET_OVERLAY =WM_CAP_START+  51 ;
const WM_CAP_SET_PREVIEW =WM_CAP_START+  50 ;
const WM_CAP_SET_CALLBACK_VIDEOSTREAM = WM_CAP_START +6;
const WM_CAP_SET_CALLBACK_ERROR=WM_CAP_START +2;
const WM_CAP_SET_CALLBACK_STATUSA= WM_CAP_START +3;
const WM_CAP_SET_CALLBACK_FRAME= WM_CAP_START +5;
const WM_CAP_SET_SCALE=WM_CAP_START+  53 ;
const WM_CAP_SET_PREVIEWRATE=WM_CAP_START+  52 ;
function capCreateCaptureWindowA(lpszWindowName : PCHAR;
    dwStyle : longint;
    x : integer;
    y : integer;
    nWidth : integer;
    nHeight : integer;
    ParentWin : HWND;
    nId : integer): HWND;
    STDCALL EXTERNAL 'AVICAP32.DLL';

Answer 3

我不是要保存avi格式视频，而是用他提供的函数录象，保存成.264格式