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• Nginx RTMP module to generate HLS

  28 novembre 2020, par Joe Lin

  I'm streaming an audio stream with opus codec from Kurento
via ffmpeg to nginx-rtmp-module. I'm using the below command to stream to nginx-rtmp :

  


  ffmpeg -protocol_whitelist file,udp,rtp  -i test-audio.sdp  
-c:a libopus  -f opus rtmp:///live/


  


  I see no error on the ffmpeg side. But there's no m3u8 file being generated. But I noticed the following in the nginx log :

  


  2020/11/23 23:19:31 [info] 95#0: *8 connect: app='live' args='' flashver='FMLE/3.0 (compatible; Lavf57.83' swf_url='' tc_url='rtmp://192.168.4.28:1935/live' page_url='' acodecs=0 vcodecs=0 object_encoding=0, client: 172.17.0.1, server: 0.0.0.0:1935


  


  Noticed the acodes=0. Does this mean that it doesn't like opus codec ?

  


  Below is my nginx.conf :

  


  rtmp {
    server {
        listen 1935;
        chunk_size 4096;
        application hopefm {
            live on;
            interleave on;

            hls on;
            hls_path /mnt/hls;
            hls_fragment 3;
            hls_playlist_length 60;
        }
    }
}


  


  Thanks for any help.

  


• Unable to get nginx-vod-module plugin to work

  31 octobre 2020, par AAP

  My first time trying hands on nginx-vod-module or any video streaming for that matter.
I just want to play static mp4 videos which I place on the server but via hls instead of direct mp4 access. No actual live streaming

  


  Q1. Am I right in understanding that a mp4 video which I place locally on my server, will automatically get broken down into segments for HLS ?

  


  My nginx installation is here : /opt/kaltura/nginx
The mp4 file is placed at /opt/kaltura/nginx/test/vid.mp4

  


  In ../nginx/conf/server.conf, I have this :

  


  location /hls/ {
            alias test/;
            vod hls;
            vod_bootstrap_segment_durations 2000;
            vod_bootstrap_segment_durations 2000;
            vod_bootstrap_segment_durations 2000;
            vod_bootstrap_segment_durations 4000;

            include /opt/kaltura/nginx/conf/cors.conf;
        }
location / {
            root   html;
        }


  


  Now, I am able to access the m3u8 file :
curl http://104.167xxxxx/hls/vid.mp4/index.m3u8

  


  But when I try to open this file via VLC, I see these errors in errors.log :

  


  *2020/10/31 15:00:08 [error] 12749#0: *60 mp4_parser_validate_stsc_atom: zero entries, client: 49.207 ..., server: ubuntu, request: "GET /hls/vid.mp4/seg-1-v1.ts HTTP/1.1", host: "104.167. ..."
2020/10/31 15:00:08 [error] 12752#0: *61 mp4_parser_validate_stsc_atom: zero entries, client: 49.207 ..., server: ubuntu, request: "GET /hls/vid.mp4/seg-2-v1.ts HTTP/1.1", host: "104.167. ..."
2020/10/31 15:00:09 [error] 12749#0: *62 mp4_parser_validate_stsc_atom: zero entries, client: 49.207 ..., server: ubuntu, request: "GET /hls/vid.mp4/seg-3-v1.ts HTTP/1.1", host: "104.167. ..."
2020/10/31 15:00:10 [error] 12751#0: *63 mp4_parser_validate_stsc_atom: zero entries, client: 49.207 ..., server: ubuntu, request: "GET /hls/vid.mp4/seg-4-v1.ts HTTP/1.1", host: "104.167. ..."*


  


  Q2 : Is https must for this to work ?
Q3 : I dont see any /hls/vid.mp4 folder created anywhere on the server. Do I have to manually run ffmpeg separately to create the hls segments ?

  


  What wrong am I doing ?

  


• Could not load file or assembly 'Accord.Video.FFMPEG.x64.DLL' or one of its dependencies. The specified module could not be found

  24 septembre 2020, par Sandeep Kumar

  Trying to merge image and audio file to create a video file.

  


  I have tried

  


  

  • changing the arch (x86 and x64).

  


  • Manually moved all the dependent .dlls for "Accord.Video.FFMPEG.x64.DLL" to the the bin.

  


  • used both Accord and Aforge, both of them have the same issue.

  


  • installed VC++ redistribuable 2013 and 2015-19

  


  


  Following is the base code :

  


  private const string _basePath = @"D:\R&D Projects\AudioVideoConvertor\VideoAudioMerger\VideoAudioMerger\Images\";

    protected void Page_Load(object sender, EventArgs e)
    {
        int width = 2500;
        int height = 2100;
        int frameRate = 10;// Shuld be fix
        using (var videoWriter = new VideoFileWriter())
        {
            // default frame size 340, 220
            videoWriter.Open(_basePath + "test.avi", width, height, frameRate, VideoCodec.WMV1);
            ResizeNearestNeighbor filter = new ResizeNearestNeighbor(width, height);
            var images = Directory.GetFiles(_basePath, "*.jpg");
            var tfile = TagLib.File.Create(_basePath + "audio.mp3");
            //string title = tfile.Tag.Title;
            TimeSpan duration = tfile.Properties.Duration;
            decimal timeinSecond = Math.Round((Convert.ToDecimal(duration.TotalSeconds) * frameRate) / images.Length);
            foreach (string img in images)
            {

                using (Bitmap image = Bitmap.FromFile(img) as Bitmap)
                {
                    //As per audio length rotate image in video frame.
                    for (int i = 0; i < timeinSecond; i++)
                    {
                        videoWriter.WriteVideoFrame(filter.Apply(image));
                    }
                }
            }
            videoWriter.Close();
            MergeAudioAndVideo();
        }
    }

    private static void MergeAudioAndVideo()
    {

        File.Delete(_basePath + "mergedvideo.avi");
        Process pss = new Process();
        ProcessStartInfo si = new ProcessStartInfo();
        si.FileName = @"D:\R&D Projects\AudioVideoConvertor\VideoAudioMerger\VideoAudioMerger\ffmpeg-win64-static\bin\ffmpeg.exe";
        si.UseShellExecute = false;
        si.CreateNoWindow = true;
        si.Arguments = "-i \"" + _basePath + "test.avi\" -i \"" + _basePath + "audio.mp3\" -c:v copy -c:a copy -map 0:v:0 -map 1:a:0 \"" + _basePath + "mergevideo1" + ".avi\"";
        pss.StartInfo = si;
        pss.Start();
        pss.WaitForExit();
        File.Delete(_basePath + "test.avi");
    }


  


  Also, putting in the link to this sample project, https://drive.google.com/file/d/1JAt8ZUCCsIwez0fkdvq_2FGeGXif5rwu/view?usp=sharing.

  


  Please help out in finding why this issue is coming ?

  


  Issue :

  


  Could not load file or assembly 'Accord.Video.FFMPEG.x64.DLL' or one of its dependencies. The specified module could not be found.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.FileNotFoundException: Could not load file or assembly 'Accord.Video.FFMPEG.x64.DLL' or one of its dependencies. The specified module could not be found.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[FileNotFoundException: Could not load file or assembly 'Accord.Video.FFMPEG.x64.DLL' or one of its dependencies. The specified module could not be found.]
 System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0
 System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +232
 System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean forIntrospection) +113
 System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +23
 System.Reflection.Assembly.Load(String assemblyString) +35
 System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +49

[ConfigurationErrorsException: Could not load file or assembly 'Accord.Video.FFMPEG.x64.DLL' or one of its dependencies. The specified module could not be found.]
 System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +762
 System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +259
 System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +167
 System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +238
 System.Web.Compilation.BuildManager.GetPreStartInitMethodsFromReferencedAssemblies() +78
 System.Web.Compilation.BuildManager.CallPreStartInitMethods(String preStartInitListPath, Boolean& isRefAssemblyLoaded) +334
 System.Web.Compilation.BuildManager.ExecutePreAppStart() +178
 System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +746

[HttpException (0x80004005): Could not load file or assembly 'Accord.Video.FFMPEG.x64.DLL' or one of its dependencies. The specified module could not be found.]
 System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +552
 System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +122
 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +737