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• Create a "metadata.json" file while saving [MMPEG]

  21 mai 2022, par Emre7

  I am using youtube-dl. I want to create the metadata data of a file while saving, but the JSON file returns empty.

  


  I can get data with —write-info-json but need detailed metadata, like this.

  


  Sample command :

  


  ffprobe -loglevel 0 -print_format json -show_format -show_streams /var/../test.mp4.part > /var/../metadata.json

  


  What could be the reason for this and is there a different way ?

  


• FFMpeg C# wrapper "MediaToolkit 1.0.4.11". How can I do a conversion in memory ?

  8 décembre 2016, par Quantum_Kernel

  I am currently using the MediaToolkit 1.0.4.11 C# wrapper for FFMPEG to extract wav audio from a range of video files.

  Instead of creating a wav file on disk, I would like to create it in memory (as a MemoryStream). This will save me from creating temp files which I need to delete and should speed up the various analyses that I am doing on the audio data.

  Because of the way the call to the library works, I’m not sure how to ’trick’ it into doing this. Is there a way to do it or will I have to obtain and edit the wrapper source code ?

  Here is what I have for doing the conversion on disk :

  var inputFile = new MediaToolkit.Model.MediaFile { Filename = mediaFilePath };
  
              var outputFile = new MediaToolkit.Model.MediaFile { Filename = @"C:\Temp\audio.wav" };
  
  
  
              var conversionOptions = new MediaToolkit.Options.ConversionOptions
  
              {
  
                  MaxVideoDuration = TimeSpan.FromSeconds(30),
  
                  VideoAspectRatio = MediaToolkit.Options.VideoAspectRatio.R16_9,
  
                  VideoSize = MediaToolkit.Options.VideoSize.Hd1080,
  
                  AudioSampleRate = MediaToolkit.Options.AudioSampleRate.Hz48000
  
              };
  
  
  
              using (var engine = new Engine())
  
              {
  
                  engine.Convert(inputFile, outputFile, conversionOptions);
  
              }

• java.lang.UnsatisfiedLinkError : JNI_ERR returned from JNI_OnLoad in "lib/arm/liblsdisplay.so"

  30 décembre 2016, par Virani Ashish

  i have create video reverse application using lansoSDK and i load the jniLib folder lib in class than "java.lang.UnsatisfiedLinkError : JNI_ERR returned from JNI_OnLoad" error occur please any can soleved my problem.

  12-30 17:50:34.797 20641-20641/com.aspiration.gifmaker E/AndroidRuntime: FATAL EXCEPTION: main
  
   Process: com.aspiration.gifmaker, PID: 20641
  
   java.lang.UnsatisfiedLinkError: JNI_ERR returned from JNI_OnLoad in "/data/app/com.aspiration.gifmaker-2/lib/arm/liblsdisplay.so"
  
       at java.lang.Runtime.loadLibrary(Runtime.java:372)
  
       at java.lang.System.loadLibrary(System.java:1076)
  
       at com.aspiration.gifmaker.videoeditor.LoadLanSongSdk.loadLibraries(LoadLanSongSdk.java:13)
  
       at com.aspiration.gifmaker.commonDemo.DemoActivity.onCreate(DemoActivity.java:41)
  
       at android.app.Activity.performCreate(Activity.java:6303)
  
       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
  
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2376)
  
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2483)
  
       at android.app.ActivityThread.access$900(ActivityThread.java:153)
  
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1349)
  
       at android.os.Handler.dispatchMessage(Handler.java:102)
  
       at android.os.Looper.loop(Looper.java:148)
  
       at android.app.ActivityThread.main(ActivityThread.java:5441)
  
       at java.lang.reflect.Method.invoke(Native Method)
  
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738)
  
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:628)

  my lib is

      System.loadLibrary("ffmpegeditor");
  
      System.loadLibrary("lsdisplay");
  
      System.loadLibrary("lsplayer");