用于C#/.NET的固态FFmpeg包装器
我已经在网络上搜索了一段时间，寻找C#/.NET的可靠的FFmpeg包装。但我还没有想出一些有用的办法。我发现了以下三个项目，但它们都可能在早期的阿尔法阶段就死了用于C#/.NET的固态FFmpeg包装器,c#,.net,video,ffmpeg,video-processing,C#,.net,Video,Ffmpeg,Video Processing,我已经在网络上搜索了一段时间，寻找C#/.NET的可靠的FFmpeg包装。但我还没有想出一些有用的办法。我发现了以下三个项目，但它们都可能在早期的阿尔法阶段就死了 所以我的问题是，是否有人知道更成熟的包装器项目？ 我不寻找一个完整的转码引擎与工作队列和更多。 这只是一个简单的包装器，因此我不必进行命令行调用，然后解析控制台输出，但可以进行方法调用，并使用eventlisteners进行处理 请随时提及任何正在进行的项目，即使它们仍处于早期阶段 我使用了ASP.NET/Windows服务（.
所以我的问题是，是否有人知道更成熟的包装器项目？
我不寻找一个完整的转码引擎与工作队列和更多。 这只是一个简单的包装器，因此我不必进行命令行调用，然后解析控制台输出，但可以进行方法调用，并使用eventlisteners进行处理
请随时提及任何正在进行的项目，即使它们仍处于早期阶段 我使用了ASP.NET/Windows服务（.NET）应用程序中的FFmpeg。 但是我最终使用了命令行，没有解析控制台。
通过使用这个-我有一个简单的方法来控制-FFmpeg的更新，并在多个核心上运行多个转换。试试这个，我想我可能已经写了一些可以用于简单包装的东西
这里还有一个简单的例子：我正在玩一个名为MediaHandler Pro的ffmpeg包装库，它来自
到目前为止似乎很有希望。给你。。。这段代码大部分已经有2年多的历史了，因此缺少了很多异步的东西，并且使用了过时的命名约定。在生产环境中运行一段时间 ~JT
内部静态类FFMpegArgUtils
{
公共静态字符串GetEncodeVideoFFMpegArgs（字符串sSourceFile、MP4Info objMp4Info、双nMbps、int iWidth、int iHeight、bool bIncludeAudio、字符串sOutputFile）
{
//确保文件包含视频流，否则此命令将失败
if（objMp4Info！=null&&objMp4Info.VideoStreamCount==0）
{
抛出新异常（“FFMpegArgUtils:：GetEncodeVideoFFMpegArgs-mp4不包含视频流”）；
}
int IBrateinkbps=（int）（nMbps*1000）；
StringBuilder sbArgs=新的StringBuilder（）；
sbArgs.Append（“-y-threads 2-i\”+sSourceFile+“\”-strict-2”）；//0告诉它选择要使用的线程数
if（bIncludeAudio==true）
{
//sbArgs.Append（“-acodec libmp3lame-ab 96k”）；
附加（“-acodec aac-ar 44100-ab 96k”）；
}
其他的
{
sbArgs.Append（“-an”）；
}
附加（“-vcodeclibx264-level41-r15-crf25-g15-keyint_min 45-bf0”）；
//sbArgs.Append（“-vf pad=“+iWidth+”：“+iHeight+”：“+ivideoffsetx+”：“+ivideoffsetx+”）；
追加（String.Format（“-vf\”scale=iw*min（{0}/iw\，{1}/ih）：ih*min（{0}/iw\，{1}/ih），pad={0}:{1}:（{0}-iw）/2:（{1}-ih）/2\”，iWidth，ihweight））；
//输出文件
追加（“\”+sOutputFile+“\”）；
返回sbArgs.ToString（）；
}
公共静态字符串GetEncodeAudioFFMpegArgs（字符串sSourceFile，字符串sOutputFile）
{
var args=String.Format（“-y-threads 2-i\“{0}\”-strict-2-acodec aac-ar 44100-ab 96k-vn\“{1}\”，sSourceFile，sOutputFile）；
返回args；
//返回GetEncodeVideoFFMpegArgs（sSourceFile，null，.285480，true，sOutputFile）；
//StringBuilder sbArgs=新的StringBuilder（）；
//国际宽度=854；
//int-iHeight=480；
//sbArgs.Append（“-y-i\”+sSourceFile+“\”-strict-2”）；//0告诉它选择要使用的线程数
//附加（“-acodec aac-ar 44100-ab 96k”）；
//附加（“-vcodeclibx264-level41-r15-crf25-g15-keyint_min 45-bf0”）；
//追加（String.Format（“-vf\”scale=iw*min（{0}/iw\，{1}/ih）：ih*min（{0}/iw\，{1}/ih），pad={0}:{1}:（{0}-iw）/2:（{1}-ih）/2\”，iWidth，ihweight））；
//追加（“\”+sOutputFile+“\”）；
//返回sbArgs.ToString（）；
}
}
内部类CreateEncodedVideoCommand:ConsoleCommandBase
{
公共事件ProgressEventHandler OnProgressEvent；
私有字符串_sSourceFile；
私有字符串\u sOutputFolder；
私人双nMaxMbps；
公共双比特率Mbps
{
获取{return\u nMaxMbps；}
}
公共整数比特率inkbps
{
获取{return（int）Math.Round（_nMaxMbps*1000）；}
}
专用输入输出宽度；
专用输入输出高度；
private bool_=false；
//私人时间跨度(u tsDuration);；
私人双百分比完成；
私有字符串\u sOutputFile；
私有字符串_sOutputFileName；
私有bool_bAudioEnabled=true；
私有字符串_sFFMpegPath；
私人字符串_sExePath；
私人字符串(sArgs),；
私人MP4Info_objSourceInfo；
私有字符串_sOutputExt；
///
///将MP4编码为提供的规格，质量为0到1之间的值
///
///从0到1的值
///
public CreateEncodedVideoCommand（字符串sSourceFile、字符串sOutputFolder、字符串sFFMpegPath、双nMaxBitrateInMbps、MP4Info objSourceInfo、int iOutputWidth、int iOutputHeight、字符串soutputText）
{
_sSourceFile=sSourceFile；
_sOutputFolder=sOutputFolder；
_nMaxMbps=nMaxBitrateInMbps；
_objSourceInfo=objSourceInfo；
_iOutputWidth=iOutputWidth；
_iOutputHeight=iOutputHeight；
_sFFMpegPath=sFFMpegPath；
_sOutputExt=sOutputExt；
}
public void SetOutputFileName（字符串sOutputFileName）
{
_sOutputFileName=sOutputFileName；
}
公共覆盖无效执行（）
{
尝试
{
_比斯
internal static class FFMpegArgUtils
{
public static string GetEncodeVideoFFMpegArgs(string sSourceFile, MP4Info objMp4Info, double nMbps, int iWidth, int iHeight, bool bIncludeAudio, string sOutputFile)
{
//Ensure file contains a video stream, otherwise this command will fail
if (objMp4Info != null && objMp4Info.VideoStreamCount == 0)
{
throw new Exception("FFMpegArgUtils::GetEncodeVideoFFMpegArgs - mp4 does not contain a video stream");
}
int iBitRateInKbps = (int)(nMbps * 1000);
StringBuilder sbArgs = new StringBuilder();
sbArgs.Append(" -y -threads 2 -i \"" + sSourceFile + "\" -strict -2 "); // 0 tells it to choose how many threads to use
if (bIncludeAudio == true)
{
//sbArgs.Append(" -acodec libmp3lame -ab 96k");
sbArgs.Append(" -acodec aac -ar 44100 -ab 96k");
}
else
{
sbArgs.Append(" -an");
}
sbArgs.Append(" -vcodec libx264 -level 41 -r 15 -crf 25 -g 15 -keyint_min 45 -bf 0");
//sbArgs.Append(" -vf pad=" + iWidth + ":" + iHeight + ":" + iVideoOffsetX + ":" + iVideoOffsetY);
sbArgs.Append(String.Format(" -vf \"scale=iw*min({0}/iw\\,{1}/ih):ih*min({0}/iw\\,{1}/ih),pad={0}:{1}:({0}-iw)/2:({1}-ih)/2\"",iWidth, iHeight));
//Output File
sbArgs.Append(" \"" + sOutputFile + "\"");
return sbArgs.ToString();
}
public static string GetEncodeAudioFFMpegArgs(string sSourceFile, string sOutputFile)
{
var args = String.Format(" -y -threads 2 -i \"{0}\" -strict -2 -acodec aac -ar 44100 -ab 96k -vn \"{1}\"", sSourceFile, sOutputFile);
return args;
//return GetEncodeVideoFFMpegArgs(sSourceFile, null, .2, 854, 480, true, sOutputFile);
//StringBuilder sbArgs = new StringBuilder();
//int iWidth = 854;
//int iHeight = 480;
//sbArgs.Append(" -y -i \"" + sSourceFile + "\" -strict -2 "); // 0 tells it to choose how many threads to use
//sbArgs.Append(" -acodec aac -ar 44100 -ab 96k");
//sbArgs.Append(" -vcodec libx264 -level 41 -r 15 -crf 25 -g 15 -keyint_min 45 -bf 0");
//sbArgs.Append(String.Format(" -vf \"scale=iw*min({0}/iw\\,{1}/ih):ih*min({0}/iw\\,{1}/ih),pad={0}:{1}:({0}-iw)/2:({1}-ih)/2\"", iWidth, iHeight));
//sbArgs.Append(" \"" + sOutputFile + "\"");
//return sbArgs.ToString();
}
}
internal class CreateEncodedVideoCommand : ConsoleCommandBase
{
public event ProgressEventHandler OnProgressEvent;
private string _sSourceFile;
private string _sOutputFolder;
private double _nMaxMbps;
public double BitrateInMbps
{
get { return _nMaxMbps; }
}
public int BitrateInKbps
{
get { return (int)Math.Round(_nMaxMbps * 1000); }
}
private int _iOutputWidth;
private int _iOutputHeight;
private bool _bIsConverting = false;
//private TimeSpan _tsDuration;
private double _nPercentageComplete;
private string _sOutputFile;
private string _sOutputFileName;
private bool _bAudioEnabled = true;
private string _sFFMpegPath;
private string _sExePath;
private string _sArgs;
private MP4Info _objSourceInfo;
private string _sOutputExt;
/// <summary>
/// Encodes an MP4 to the specs provided, quality is a value from 0 to 1
/// </summary>
/// <param name="nQuality">A value from 0 to 1</param>
///
public CreateEncodedVideoCommand(string sSourceFile, string sOutputFolder, string sFFMpegPath, double nMaxBitrateInMbps, MP4Info objSourceInfo, int iOutputWidth, int iOutputHeight, string sOutputExt)
{
_sSourceFile = sSourceFile;
_sOutputFolder = sOutputFolder;
_nMaxMbps = nMaxBitrateInMbps;
_objSourceInfo = objSourceInfo;
_iOutputWidth = iOutputWidth;
_iOutputHeight = iOutputHeight;
_sFFMpegPath = sFFMpegPath;
_sOutputExt = sOutputExt;
}
public void SetOutputFileName(string sOutputFileName)
{
_sOutputFileName = sOutputFileName;
}
public override void Execute()
{
try
{
_bIsConverting = false;
string sFileName = _sOutputFileName != null ? _sOutputFileName : Path.GetFileNameWithoutExtension(_sSourceFile) + "_" + _iOutputWidth + "." + _sOutputExt;
_sOutputFile = _sOutputFolder + "\\" + sFileName;
_sExePath = _sFFMpegPath;
_sArgs = FFMpegArgUtils.GetEncodeVideoFFMpegArgs(_sSourceFile, _objSourceInfo,_nMaxMbps, _iOutputWidth, _iOutputHeight, _bAudioEnabled, _sOutputFile);
InternalExecute(_sExePath, _sArgs);
}
catch (Exception objEx)
{
DispatchException(objEx);
}
}
public override string GetCommandInfo()
{
StringBuilder sbInfo = new StringBuilder();
sbInfo.AppendLine("CreateEncodeVideoCommand");
sbInfo.AppendLine("Exe: " + _sExePath);
sbInfo.AppendLine("Args: " + _sArgs);
sbInfo.AppendLine("[ConsoleOutput]");
sbInfo.Append(ConsoleOutput);
sbInfo.AppendLine("[ErrorOutput]");
sbInfo.Append(ErrorOutput);
return base.GetCommandInfo() + "\n" + sbInfo.ToString();
}
protected override void OnInternalCommandComplete(int iExitCode)
{
DispatchCommandComplete( iExitCode == 0 ? CommandResultType.Success : CommandResultType.Fail);
}
override protected void OnOutputRecieved(object sender, ProcessOutputEventArgs objArgs)
{
//FMPEG out always shows as Error
base.OnOutputRecieved(sender, objArgs);
if (_bIsConverting == false && objArgs.Data.StartsWith("Press [q] to stop encoding") == true)
{
_bIsConverting = true;
}
else if (_bIsConverting == true && objArgs.Data.StartsWith("frame=") == true)
{
//Capture Progress
UpdateProgressFromOutputLine(objArgs.Data);
}
else if (_bIsConverting == true && _nPercentageComplete > .8 && objArgs.Data.StartsWith("frame=") == false)
{
UpdateProgress(1);
_bIsConverting = false;
}
}
override protected void OnProcessExit(object sender, ProcessExitedEventArgs args)
{
_bIsConverting = false;
base.OnProcessExit(sender, args);
}
override public void Abort()
{
if (_objCurrentProcessRunner != null)
{
//_objCurrentProcessRunner.SendLineToInputStream("q");
_objCurrentProcessRunner.Dispose();
}
}
#region Helpers
//private void CaptureSourceDetailsFromOutput()
//{
// String sInputStreamInfoStartLine = _colErrorLines.SingleOrDefault(o => o.StartsWith("Input #0"));
// int iStreamInfoStartIndex = _colErrorLines.IndexOf(sInputStreamInfoStartLine);
// if (iStreamInfoStartIndex >= 0)
// {
// string sDurationInfoLine = _colErrorLines[iStreamInfoStartIndex + 1];
// string sDurantionTime = sDurationInfoLine.Substring(12, 11);
// _tsDuration = VideoUtils.GetDurationFromFFMpegDurationString(sDurantionTime);
// }
//}
private void UpdateProgressFromOutputLine(string sOutputLine)
{
int iTimeIndex = sOutputLine.IndexOf("time=");
int iBitrateIndex = sOutputLine.IndexOf(" bitrate=");
string sCurrentTime = sOutputLine.Substring(iTimeIndex + 5, iBitrateIndex - iTimeIndex - 5);
double nCurrentTimeInSeconds = double.Parse(sCurrentTime);
double nPercentageComplete = nCurrentTimeInSeconds / _objSourceInfo.Duration.TotalSeconds;
UpdateProgress(nPercentageComplete);
//Console.WriteLine("Progress: " + _nPercentageComplete);
}
private void UpdateProgress(double nPercentageComplete)
{
_nPercentageComplete = nPercentageComplete;
if (OnProgressEvent != null)
{
OnProgressEvent(this, new ProgressEventArgs( _nPercentageComplete));
}
}
#endregion
//public TimeSpan Duration { get { return _tsDuration; } }
public double Progress { get { return _nPercentageComplete; } }
public string OutputFile { get { return _sOutputFile; } }
public bool AudioEnabled
{
get { return _bAudioEnabled; }
set { _bAudioEnabled = value; }
}
}
public abstract class ConsoleCommandBase : CommandBase, ICommand
{
protected ProcessRunner _objCurrentProcessRunner;
protected List<String> _colOutputLines;
protected List<String> _colErrorLines;
private int _iExitCode;
public ConsoleCommandBase()
{
_colOutputLines = new List<string>();
_colErrorLines = new List<string>();
}
protected void InternalExecute(string sExePath, string sArgs)
{
InternalExecute(sExePath, sArgs, null, null, null);
}
protected void InternalExecute(string sExePath, string sArgs, string sDomain, string sUsername, string sPassword)
{
try
{
if (_objCurrentProcessRunner == null || _bIsRunning == false)
{
StringReader objStringReader = new StringReader(string.Empty);
_objCurrentProcessRunner = new ProcessRunner(sExePath, sArgs);
_objCurrentProcessRunner.SetCredentials(sDomain, sUsername, sPassword);
_objCurrentProcessRunner.OutputReceived += new ProcessOutputEventHandler(OnOutputRecieved);
_objCurrentProcessRunner.ProcessExited += new ProcessExitedEventHandler(OnProcessExit);
_objCurrentProcessRunner.Run();
_bIsRunning = true;
_bIsComplete = false;
}
else
{
DispatchException(new Exception("Processor Already Running"));
}
}
catch (Exception objEx)
{
DispatchException(objEx);
}
}
protected virtual void OnOutputRecieved(object sender, ProcessOutputEventArgs args)
{
try
{
if (args.Error == true)
{
_colErrorLines.Add(args.Data);
//Console.WriteLine("Error: " + args.Data);
}
else
{
_colOutputLines.Add(args.Data);
//Console.WriteLine(args.Data);
}
}
catch (Exception objEx)
{
DispatchException(objEx);
}
}
protected virtual void OnProcessExit(object sender, ProcessExitedEventArgs args)
{
try
{
Console.Write(ConsoleOutput);
_iExitCode = args.ExitCode;
_bIsRunning = false;
_bIsComplete = true;
//Some commands actually fail to succeed
//if(args.ExitCode != 0)
//{
// DispatchException(new Exception("Command Failed: " + this.GetType().Name + "\nConsole: " + ConsoleOutput + "\nConsoleError: " + ErrorOutput));
//}
OnInternalCommandComplete(_iExitCode);
if (_objCurrentProcessRunner != null)
{
_objCurrentProcessRunner.Dispose();
_objCurrentProcessRunner = null;
}
}
catch (Exception objEx)
{
DispatchException(objEx);
}
}
abstract protected void OnInternalCommandComplete(int iExitCode);
protected string JoinLines(List<String> colLines)
{
StringBuilder sbOutput = new StringBuilder();
colLines.ForEach( o => sbOutput.AppendLine(o));
return sbOutput.ToString();
}
#region Properties
public int ExitCode
{
get { return _iExitCode; }
}
#endregion
public override string GetCommandInfo()
{
StringBuilder sbCommandInfo = new StringBuilder();
sbCommandInfo.AppendLine("Command: " + this.GetType().Name);
sbCommandInfo.AppendLine("Console Output");
if (_colOutputLines != null)
{
foreach (string sOutputLine in _colOutputLines)
{
sbCommandInfo.AppendLine("\t" + sOutputLine);
}
}
sbCommandInfo.AppendLine("Error Output");
if (_colErrorLines != null)
{
foreach (string sErrorLine in _colErrorLines)
{
sbCommandInfo.AppendLine("\t" + sErrorLine);
}
}
return sbCommandInfo.ToString();
}
public String ConsoleOutput { get { return JoinLines(_colOutputLines); } }
public String ErrorOutput { get { return JoinLines(_colErrorLines);} }
}
CommandBase : ICommand
{
protected IDedooseContext _context;
protected Boolean _bIsRunning = false;
protected Boolean _bIsComplete = false;
#region Custom Events
public event CommandCompleteEventHandler OnCommandComplete;
event CommandCompleteEventHandler ICommand.OnCommandComplete
{
add { if (OnCommandComplete != null) { lock (OnCommandComplete) { OnCommandComplete += value; } } else { OnCommandComplete = new CommandCompleteEventHandler(value); } }
remove { if (OnCommandComplete != null) { lock (OnCommandComplete) { OnCommandComplete -= value; } } }
}
public event UnhandledExceptionEventHandler OnCommandException;
event UnhandledExceptionEventHandler ICommand.OnCommandException
{
add { if (OnCommandException != null) { lock (OnCommandException) { OnCommandException += value; } } else { OnCommandException = new UnhandledExceptionEventHandler(value); } }
remove { if (OnCommandException != null) { lock (OnCommandException) { OnCommandException -= value; } } }
}
public event ProgressEventHandler OnProgressUpdate;
event ProgressEventHandler ICommand.OnProgressUpdate
{
add { if (OnProgressUpdate != null) { lock (OnProgressUpdate) { OnProgressUpdate += value; } } else { OnProgressUpdate = new ProgressEventHandler(value); } }
remove { if (OnProgressUpdate != null) { lock (OnProgressUpdate) { OnProgressUpdate -= value; } } }
}
#endregion
protected CommandBase()
{
_context = UnityGlobalContainer.Instance.Context;
}
protected void DispatchCommandComplete(CommandResultType enResult)
{
if (enResult == CommandResultType.Fail)
{
StringBuilder sbMessage = new StringBuilder();
sbMessage.AppendLine("Command Commpleted with Failure: " + this.GetType().Name);
sbMessage.Append(GetCommandInfo());
Exception objEx = new Exception(sbMessage.ToString());
DispatchException(objEx);
}
else
{
if (OnCommandComplete != null)
{
OnCommandComplete(this, new CommandCompleteEventArgs(enResult));
}
}
}
protected void DispatchException(Exception objEx)
{
if (OnCommandException != null)
{
OnCommandException(this, new UnhandledExceptionEventArgs(objEx, true));
}
else
{
_context.Logger.LogException(objEx, MethodBase.GetCurrentMethod());
throw objEx;
}
}
protected void DispatchProgressUpdate(double nProgressRatio)
{
if (OnProgressUpdate != null) { OnProgressUpdate(this, new ProgressEventArgs(nProgressRatio)); }
}
public virtual string GetCommandInfo()
{
return "Not Implemented: " + this.GetType().Name;
}
public virtual void Execute() { throw new NotImplementedException(); }
public virtual void Abort() { throw new NotImplementedException(); }
public Boolean IsRunning { get { return _bIsRunning; } }
public Boolean IsComplete { get { return _bIsComplete; } }
public double GetProgressRatio()
{
throw new NotImplementedException();
}
}
public delegate void CommandCompleteEventHandler(object sender, CommandCompleteEventArgs e);
public interface ICommand
{
event CommandCompleteEventHandler OnCommandComplete;
event UnhandledExceptionEventHandler OnCommandException;
event ProgressEventHandler OnProgressUpdate;
double GetProgressRatio();
string GetCommandInfo();
void Execute();
void Abort();
}
PM> Install-Package MediaToolkit
string result = String.Empty;
StreamReader srOutput = null;
var oInfo = new ProcessStartInfo(exePath, parameters)
{
UseShellExecute = false,
CreateNoWindow = true,
RedirectStandardOutput = true,
RedirectStandardError = true
};
var output = string.Empty;
try
{
Process process = System.Diagnostics.Process.Start(oInfo);
output = process.StandardError.ReadToEnd();
process.WaitForExit();
process.Close();
}
catch (Exception)
{
output = string.Empty;
}
return output;
IConversionResult result = await Conversion.ToMp4(Resources.MkvWithAudio, output).Start();
IConversion conversion = Conversion.ToMp4(Resources.MkvWithAudio, output);
conversion.OnProgress += (duration, length) => { currentProgress = duration; }
await conversion.Start();