C#调用FFMPEG实现桌面录制（视频+音频+生成本地

using


System;


using


System.Collections.Generic;


using


System.Diagnostics;


using


System.IO;


using


System.Linq;


using


System.Text;


using


System.Threading.Tasks;


using


Microsoft.DirectX;


using


Microsoft.DirectX.DirectSound;


using


System.Runtime.InteropServices;


namespace


ClassTool
{

public


class


RecordHelper
{



#region

模拟控制台信号需要使用的api


[DllImport(


"


kernel32.dll


"


)]



static


extern


bool

GenerateConsoleCtrlEvent(

int

dwCtrlEvent,

int


dwProcessGroupId);
[DllImport(


"


kernel32.dll


"


)]



static


extern


bool

SetConsoleCtrlHandler(IntPtr handlerRoutine,

bool


add);
[DllImport(


"


kernel32.dll


"


)]



static


extern


bool

AttachConsole(

int


dwProcessId);
[DllImport(


"


kernel32.dll


"


)]



static


extern


bool


FreeConsole();



#endregion


//


ffmpeg进程


static

Process p =

new


Process();



//


ffmpeg.exe实体文件路径


static


string

ffmpegPath = AppDomain.CurrentDomain.BaseDirectory +

"


ffmpeg\\ffmpeg.exe


"


;



///

///


获取声音输入设备列表



///

///





声音输入设备列表





public


static


CaptureDevicesCollection GetAudioList()
{
CaptureDevicesCollection collection

=

new


CaptureDevicesCollection();



return


collection;
}



///

///


功能: 开始录制



///

public


static


void

Start(

string

audioDevice,

string


outFilePath)
{



if


(File.Exists(outFilePath))
{
File.Delete(outFilePath);
}



/*


转码，视频录制设备：gdigrab；录制对象：桌面；
* 音频录制方式：dshow；
* 视频编码格式：h.264；


*/



ProcessStartInfo startInfo

=

new


ProcessStartInfo(ffmpegPath);
startInfo.WindowStyle

=

ProcessWindowStyle.Normal;
startInfo.Arguments

=

"


-f gdigrab -framerate 15 -i desktop -f dshow -i audio=\"


"

+ audioDevice +

"


\" -vcodec libx264 -preset:v ultrafast -tune:v zerolatency -acodec libmp3lame \"


"

+ outFilePath +

"


\"


"


;
p.StartInfo

=

startInfo;
p.Start();
}



///

///


功能: 停止录制



///

public


static


void


Stop()
{
AttachConsole(p.Id);
SetConsoleCtrlHandler(IntPtr.Zero,


true


);
GenerateConsoleCtrlEvent(


0

,

0


);
FreeConsole();
}



}
}