我一直在网上搜索 C＃/。NET 的强大 FFmpeg 包装器。但我还没有想出一些有用的东西。我发现了以下三个项目，但是所有这些项目都在早期的alpha阶段就已经死了。
FFmpeg.NET
ffmpeg-sharp
FFLIB.NET
所以我的问题是，是否有人知道更成熟的包装项目？
我不是在寻找带有工作队列等的完整转码引擎。
只是一个简单的包装器，所以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进行操作。
请随意提及任何活跃的项目，即使它们在早期阶段仍然存在。
答案 0 :(得分：21)
这是我自己的包装：https://github.com/AydinAdn/MediaToolkit
MediaToolkit可以：
Bit rate，Frame rate，Resolution / size，Aspect ratio，Duration of video Audio sample rate DVD，DV，DV50，VCD，SVCD 我正在更新它，欢迎您使用它，您也可以使用软件包管理器控制台进行安装。
PM> Install-Package MediaToolkit
答案 1 :(得分：11)
试试这个，我想我可能已经写了一些你可以用来做一个简单的包装器。
http://jasonjano.wordpress.com/2010/02/09/a-simple-c-wrapper-for-ffmpeg/
答案 2 :(得分：9)
我使用过ASP.NET / Windows服务（.NET）应用程序中的FFmpeg。 但我最终使用命令行，而没有解析控制台。 通过使用它 - 我有一个简单的方法来控制 - 更新FFmpeg并在多个核心上运行多个转换。
答案 3 :(得分：6)
尝试了几个包装后，我接受了这个：FFmpeg auto generated unsafe bindings for C#/.NET and Mono。
它是FFmpeg命名空间中每个类的一组低级互操作绑定。 可能不像使用真正的包装器那样方便，但IMO是在.Net中使用FFmpeg的最佳解决方案，如果你想做非平凡的事情。
优点：
缺点：
注意：此主题是关于使用FFmpeg API，但对于某些用例，最好只使用ffmpeg.exe command line interface。 < / p>
答案 4 :(得分：4)
我正在玩一个名为MediaHandler Pro的ffmpeg包装器库
到目前为止似乎很有希望。答案 5 :(得分：3)
这里还有一个简单的问题：http://ivolo.mit.edu/post/Metamorph-Convert-Audio-Video-to-Any-Format-on-Windows-Linux-and-Mac.aspx
答案 6 :(得分：2)
这里你要去...这段代码的大部分都是2年以上，因此缺少很多异步内容，并使用过时的命名约定。在生产环境中运行了相当长的一段时间 ~JT
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();
}
//对于流程运行者来说，由Roger Knapp查找ProcessRunner
答案 7 :(得分：2)
我一直在研究同样的事情并最初使用了MediaToolKit（在另一个答案中提到），这对于转换非常有用，但现在我需要更强大的功能。
一个看似成熟且仍然活跃的选项是： https://github.com/hudl/HudlFfmpeg 您可以在这里阅读更多信息： http://public.hudl.com/bits/archives/2014/08/15/announcing-hudlffmpeg-a-c-framework-to-make-ffmpeg-interaction-simple/
另一个可能不适合很多情况的选项是直接从你的c＃代码中调用exe： http://www.codeproject.com/Articles/774093/Another-FFmpeg-exe-Csharp-Wrapper
答案 8 :(得分：2)
您可以使用此nuget包：
我知道您询问了成熟项目，但我还没有看到任何项目满足了我的期望，所以我决定自己制作。 您可以轻松地对转换进行排队并将其并行运行，将媒体转换为不同格式的方法，将您自己的参数发送到ffmpeg并使用当前进度解析ffmpeg +事件侦听器的输出。
Install-Package Xabe.FFmpeg
我试图制作易于使用的跨平台FFmpeg包装器。
您可以在https://xabe.net/product/xabe_ffmpeg/
找到有关此内容的更多信息此处有更多信息：https://xabe.net/product/xabe_ffmpeg/#documentation
转换很简单：
IConversionResult result = await Conversion.ToMp4(Resources.MkvWithAudio, output).Start();
如果你想要进步：
IConversion conversion = Conversion.ToMp4(Resources.MkvWithAudio, output);
conversion.OnProgress += (duration, length) => { currentProgress = duration; }
await conversion.Start();
答案 9 :(得分：1)
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;
这个包装器不会让方法陷入循环。 试试这个，它对我有用。
答案 10 :(得分：1)
我从codeplex分叉了FFPMEG.net。
仍在积极开展工作。
https://github.com/spoiledtechie/FFMpeg.Net
它不使用dll，而是使用exe。所以它往往更稳定。
答案 11 :(得分：0)
请参阅Auto Generated FFmpeg wrapper for C#/.NET and Mono，这是一个非常棒的项目，它似乎是FFmpeg互操作的唯一真正的完整.NET包装器。