Sur d’autres sites (9786)

• Rsync a video stream continously and watch it

  13 juin 2017, par Ural

  I am recording a cam on a remote machine in my office. I use ffmpeg for that, and writing to mpegts file.
  I want to copy that stream locally, to have a fresh copy, and watch it simultaneously.
  I don’t know options for rsync to grab a changing (appending) file, so I am using loop for it, and it is very slow.

  while true; do rsync -avz --progress --partial --append remote:~/myvideo.mp4 ~/; done

  For watching, I tried :

  mkfifo /tmp/fifo
  
  tail -f ~/myvideo.mp4 > /tmp/fifo
  
  mplayer /tmp/fifo

  But because rsync is stopping every 5 sec, it is working unstable.

  How to record and stream a remote cam continuously, and use only one network stream for that ?

• FFMPEG is not working in app service post deployment

  1er mars 2024, par Tushar Gupta

  I using the Xabe.FFmpeg package to generate clips from a video. The code is basically converting a video to multiple clips and it's working fine in my local but whenever I am uploading the code to app service the code is not working.

  


  Stack : .net
App Service OS : Windows

  


  Error :

  


  2024-02-13 08:57:34.092 +00:00 [Error] Microsoft.AspNetCore.Server.IIS.Core.IISHttpServer : Connection ID "16573246629528734243", Request ID "40000a24-0000-e600-b63f-84710c7967bb" : An unhandled exception was thrown by the application.System.ComponentModel.Win32Exception (193) : An error occurred trying to start process 'C :\home\site\wwwroot\Controllers\ffmpeg\bin\ffmpeg.exe' with working directory 'C :\home\site\wwwroot'. The specified executable is not a valid application for this OS platform.at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)at System.Diagnostics.Process.Start()at Xabe.FFmpeg.FFmpeg.RunProcess(String args, String processPath, Nullable1 priority, Boolean standardInput, Boolean standardOutput, Boolean standardError)at Xabe.FFmpeg.FFmpegWrapper.&lt;>c__DisplayClass14_0.<runprocess>b__0()at System.Threading.Tasks.Task</runprocess>1.InnerInvoke()at System.Threading.Tasks.Task.<>c.<.cctor>b__281_0(Object obj)at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)--- End of stack trace from previous location ---at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)--- End of stack trace from previous location ---at Xabe.FFmpeg.Conversion.Start(String parameters, CancellationToken cancellationToken)at ExtractResponseAPI.Controllers.HomeController.PrepareVideoClips(CloudBlockBlob sourceVideoBlob, TimeSpan startTime, TimeSpan endTime) in C :\Users\tushar.h.gupta\source\repos\ExtractResponseAPI\Controllers\HomeController.cs:line 164at ExtractResponseAPI.Controllers.HomeController.GetIntervalsAsync(String query) in C :\Users\tushar.h.gupta\source\repos\ExtractResponseAPI\Controllers\HomeController.cs:line 60at ExtractResponseAPI.Controllers.HomeController.Get(String query) in C :\Users\tushar.h.gupta\source\repos\ExtractResponseAPI\Controllers\HomeController.cs:line 24at lambda_method4(Closure, Object)at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.AwaitableObjectResultExecutor.Execute(ActionContext actionContext, IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.g__Awaited|12_0(ControllerActionInvoker invoker, ValueTask1 actionResultValueTask)at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<invokenextactionfilterasync>g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State&amp; next, Scope&amp; scope, Object&amp; state, Boolean&amp; isCompleted)at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<invokeinnerfilterasync>g__Awaited|13_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<invokefilterpipelineasync>g__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<invokeasync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<invokeasync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)at Microsoft.AspNetCore.Server.IIS.Core.IISHttpContextOfT</invokeasync></invokeasync></invokefilterpipelineasync></invokeinnerfilterasync></invokenextactionfilterasync>1.ProcessRequestAsync()

  &#xA;

  Code :

  &#xA;

  private async Task> PrepareVideoClips(CloudBlockBlob sourceVideoBlob, TimeSpan startTime, TimeSpan endTime)&#xA;{&#xA;    string tempDirectory = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());&#xA;&#xA;    // Create a temporary directory to store clips locally&#xA;    Directory.CreateDirectory(tempDirectory);&#xA;&#xA;    // Download the source video&#xA;    string sourceVideoPath = Path.Combine(tempDirectory, "sourceVideo.mp4");&#xA;    await sourceVideoBlob.DownloadToFileAsync(sourceVideoPath, FileMode.Create);&#xA;    FFmpeg.SetExecutablesPath("Controllers\\ffmpeg\\bin\\");&#xA;    // Use FFmpegCore to trim the video&#xA;    string outputVideoPath = Path.Combine(tempDirectory, "output.mp4");&#xA;&#xA;    await FFmpeg.Conversions.New()&#xA;        .AddParameter($"-ss {startTime.TotalSeconds}") // Start time&#xA;        .AddParameter($"-i {sourceVideoPath}")&#xA;        .AddParameter($"-to {(endTime - startTime).TotalSeconds}") // Duration&#xA;        .SetOutput(outputVideoPath)&#xA;        .Start();&#xA;&#xA;    // Return a list of file paths for the clips&#xA;    return new List<string> { outputVideoPath };&#xA;}&#xA;</string>

  &#xA;

  I tried deploying the app service using different OS but still facing the same issue, I also tried using different packages but the result is same.

  &#xA;

• Kernel32 not found when using FFmpeg.Autogen 4.1.0.2 in Mono/Linux

  5 décembre 2024, par Robert Russell

  I'm submitting a bug report while I was posting this I didn't know I could see into FFmpeg.Autogen from the stacktrace. Anyways I posted a Bug Report on Github

  &#xA;&#xA;

  https://github.com/Ruslan-B/FFmpeg.AutoGen/issues/109

  &#xA;&#xA;

  I'm trying to run my code in Linux that uses FFmpeg.Autogen to interface with the ffmpeg libraries. I am getting kernel32 dll not found can not figure out why. He says to not post issues to github for troubleshooting.&#xA;Possible related issue : https://github.com/Ruslan-B/FFmpeg.AutoGen/issues/89

  &#xA;&#xA;

  First thing I've tried were to include the binary helper class from the example code I tweaked it a little bit. Added the exact path to the linux files.&#xA;Second thing I did was add FFmpeg.AutoGen.dll.config if configured right and it tries to ref a windows DLL it should point to the linux one.&#xA;Stacktrace :

  &#xA;&#xA;

  System.DllNotFoundException: kernel32
  at at (wrapper managed-to-native) FFmpeg.AutoGen.Native.WindowsNativeMethods.GetProcAddress(intptr,string)
  at FFmpeg.AutoGen.Native.FunctionLoader.GetFunctionPointer (System.IntPtr nativeLibraryHandle, System.String functionName) [0x00000] in D:\FFmpeg.AutoGen\FFmpeg.AutoGen\Native\FunctionLoader.cs:55
  at FFmpeg.AutoGen.Native.FunctionLoader.GetFunctionDelegate[T] (System.IntPtr nativeLibraryHandle, System.String functionName, System.Boolean throwOnError) [0x00000] in D:\FFmpeg.AutoGen\FFmpeg.AutoGen\Native\FunctionLoader.cs:28
  at FFmpeg.AutoGen.ffmpeg.GetFunctionDelegate[T] (System.IntPtr libraryHandle, System.String functionName) [0x00000] in D:\FFmpeg.AutoGen\FFmpeg.AutoGen\FFmpeg.cs:50
  at FFmpeg.AutoGen.ffmpeg+<>c.<.cctor>b__4_318 () [0x00000] in D:\FFmpeg.AutoGen\FFmpeg.AutoGen\FFmpeg.functions.export.g.cs:7163
  at FFmpeg.AutoGen.ffmpeg.avformat_alloc_context () [0x00000] in D:\FFmpeg.AutoGen\FFmpeg.AutoGen\FFmpeg.functions.export.g.cs:7176
  at FF8.FfccVaribleGroup..ctor () [0x0009c] in /home/robert/OpenVIII/FF8/FfccVaribleGroup.cs:53
  at FF8.Ffcc..ctor (System.String filename, FFmpeg.AutoGen.AVMediaType mediatype, FF8.Ffcc+FfccMode mode) [0x00008] in /home/robert/OpenVIII/FF8/Ffcc.cs:31
  at FF8.Module_movie_test.InitMovie () [0x00001] in /home/robert/OpenVIII/FF8/module_movie_test.cs:160
  at FF8.Module_movie_test.Update () [0x000c5] in /home/robert/OpenVIII/FF8/module_movie_test.cs:88
  at FF8.ModuleHandler.Update (Microsoft.Xna.Framework.GameTime gameTime) [0x000ac] in /home/robert/OpenVIII/FF8/ModuleHandler.cs:43
  at FF8.Game1.Update (Microsoft.Xna.Framework.GameTime gameTime) [0x00030] in /home/robert/OpenVIII/FF8/Game1.cs:69
  at Microsoft.Xna.Framework.Game.DoUpdate (Microsoft.Xna.Framework.GameTime gameTime) [0x00019] in <4fc8466c27384bb19c7b81b2a6a71083>:0
  at Microsoft.Xna.Framework.Game.Tick () [0x00103] in <4fc8466c27384bb19c7b81b2a6a71083>:0
  at Microsoft.Xna.Framework.SdlGamePlatform.RunLoop () [0x00021] in <4fc8466c27384bb19c7b81b2a6a71083>:0
  at Microsoft.Xna.Framework.Game.Run (Microsoft.Xna.Framework.GameRunBehavior runBehavior) [0x0008b] in <4fc8466c27384bb19c7b81b2a6a71083>:0
  at Microsoft.Xna.Framework.Game.Run () [0x0000c] in <4fc8466c27384bb19c7b81b2a6a71083>:0
  at FF8.Program.Main () [0x00007] in /home/robert/OpenVIII/FF8/Program.cs:17


  &#xA;&#xA;

  My code that triggers this :

  &#xA;&#xA;

  Format = ffmpeg.avformat_alloc_context();


  &#xA;&#xA;

  Binaryhelper should set the path correctly for the file

  &#xA;&#xA;

  internal static void RegisterFFmpegBinaries()
        {
            var libraryPath = "";
            switch (Environment.OSVersion.Platform)
            {
                case PlatformID.Win32NT:
                case PlatformID.Win32S:
                case PlatformID.Win32Windows:
                    var current = Environment.CurrentDirectory;
                    var probe = Path.Combine(Environment.Is64BitProcess ? "x64" : "x86");
                    while (current != null)
                    {
                        var ffmpegDirectory = Path.Combine(current, probe);
                        if (Directory.Exists(ffmpegDirectory))
                        {
                            Console.WriteLine($"FFmpeg binaries found in: {ffmpegDirectory}");
                            RegisterLibrariesSearchPath(ffmpegDirectory);
                            return;
                        }
                        current = Directory.GetParent(current)?.FullName;
                    }
                    break;
                case PlatformID.Unix:
                    libraryPath = "/usr/lib/x86_64-linux-gnu";
                    RegisterLibrariesSearchPath(libraryPath);
                    break;
                case PlatformID.MacOSX:
                    libraryPath = Environment.GetEnvironmentVariable(LD_LIBRARY_PATH);
                    RegisterLibrariesSearchPath(libraryPath);
                    break;
            }
        }


  &#xA;&#xA;

  The FFmpeg.Autogen.dll.config

  &#xA;&#xA;

  <configuration>&#xA;  <dllmap os="linux" dll="avutil-56.dll" target="/usr/lib/x86_64-linux-gnu/libavutil.so.56"></dllmap>&#xA;  <dllmap os="linux" dll="avcodec-58.dll" target="/usr/lib/x86_64-linux-gnu/libavcodec.so.58"></dllmap>&#xA;  <dllmap os="linux" dll="avformat-58.dll" target="/usr/lib/x86_64-linux-gnu/libavformat.so.58"></dllmap>&#xA;  <dllmap os="linux" dll="avdevice-58.dll" target="/usr/lib/x86_64-linux-gnu/libavdevice.so.58"></dllmap>&#xA;  <dllmap os="linux" dll="avfilter-7.dll" target="/usr/lib/x86_64-linux-gnu/libavfilter.so.7"></dllmap>&#xA;  <dllmap os="linux" dll="avresample-4.dll" target="/usr/lib/x86_64-linux-gnu/libavresample.so.4"></dllmap>&#xA;  <dllmap os="linux" dll="swscale-5.dll" target="/usr/lib/x86_64-linux-gnu/libswscale.so.5"></dllmap>&#xA;  <dllmap os="linux" dll="swresample-3.dll" target="/usr/lib/x86_64-linux-gnu/libswresample.so.3"></dllmap>&#xA;  <dllmap os="linux" dll="postproc-55.dll" target="/usr/lib/x86_64-linux-gnu/libpostproc.so.55"></dllmap>&#xA;</configuration>&#xA;

  &#xA;