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Sur d’autres sites (4313)

  • Can not get frames from youtube video using FFmpegMediaMetadataRetriever

    27 juin 2019, par Ahasan Ratul

    I have been trying to extract a frame from a youtube video using FFmpegMediaMetadataRetriever in my android studio project. whenever I use the youtube url inside setDataSource, the app crashes. I am totally new in android studio and haven’t worked with FFmpeg before. I would appreciate if anyone can help me out. Also, I am sorry if I have asked a really silly/easy question.

    import wseemann.media.FFmpegMediaMetadataRetriever;
    
.....
    

    
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
    
    @Override
    
    public void onManagerConnected(int status) {
    
        switch (status) {
    
            case LoaderCallbackInterface.SUCCESS: {
    
                Log.i(TAG, "OpenCV loaded successfully");
    
                mOpenCvCameraView.enableView();
    
                try {
    
                    initializeOpenCVDependencies();
    
                } catch (IOException e) {
    
                    e.printStackTrace();
    
                }
    
            }
    
            break;
    
            default: {
    
                super.onManagerConnected(status);
    
            }
    
            break;
    
        }
    
    }
    
};
    

    

    
private void initializeOpenCVDependencies() throws IOException {
    

    
    tick =0;
    
   //extract frame at 2 second using FFmpegMediaMetadataRetriever
    
    FFmpegMediaMetadataRetriever mmr = new FFmpegMediaMetadataRetriever();
    
    mmr.setDataSource("https://youtu.be/f-ehTcWC6dc");
    
    Bitmap b = mmr.getFrameAtTime(2000000, FFmpegMediaMetadataRetriever.OPTION_CLOSEST);
    
    mmr.release();
    

    
    objMat = new MatOfPoint2f();
    
    sceneMat = new MatOfPoint2f();
    
    obj_corners = new Mat(4, 1, CvType.CV_32FC2);
    
    img = new Mat();
    
    img2 = new Mat();
    
}

    in the build.gradle, I have added the following dependencies

    dependencies {
    

    
       //FFmpegMediaMetadataRetriever dependencies
    
       implementation 'com.github.wseemann:FFmpegMediaMetadataRetriever:1.0.14'
    

    
       implementation project(path: ':openCVLibrary340dev')
    
}

    error that I get is :

    E/AndroidRuntime : FATAL EXCEPTION : main
    Process : com.example.jeverfun, PID : 8877
    java.lang.RuntimeException : Unable to resume activity com.example.jeverfun/com.example.jeverfun.jevercamera : java.lang.IllegalArgumentException : setDataSource failed : status = 0xFFFFFFFF
    at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3581)
    at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3621)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2862)
    at android.app.ActivityThread.-wrap11(Unknown Source:0)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6494)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
    Caused by : java.lang.IllegalArgumentException : setDataSource failed : status = 0xFFFFFFFF
    at wseemann.media.FFmpegMediaMetadataRetriever.setDataSource(Native Method)
    at com.example.jeverfun.jevercamera.initializeOpenCVDependencies(jevercamera.java:373)
    at com.example.jeverfun.jevercamera.access$100(jevercamera.java:59)
    at com.example.jeverfun.jevercamera$1.onManagerConnected(jevercamera.java:347)
    at com.example.jeverfun.jevercamera.onResume(jevercamera.java:469)
    at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1355)
    at android.app.Activity.performResume(Activity.java:7117)
    at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3556)
    at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3621) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2862) 
    at android.app.ActivityThread.-wrap11(Unknown Source:0) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589) 
    at android.os.Handler.dispatchMessage(Handler.java:106) 
    at android.os.Looper.loop(Looper.java:164) 
    at android.app.ActivityThread.main(ActivityThread.java:6494) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807) 
    I/MediaMetadataRetrieverJNI : release
    Application terminated.

  • java.lang.UnsatisfiedLinkError : dlopen failed : cannot locate symbol "av_bsf_next" referenced by "/lib/arm/libffmpeg.so"

    21 octobre 2019, par Sushrita

    I have a third party library which has ffmpeg as dependency and i am getting this error while executing a thread.

     Process: com.joe.epmediademo, PID: 11906
    
    java.lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol "av_bsf_next" referenced by "/data/app/com.joe.epmediademo-U-buiUc64rYJquAlCAhK5A==/lib/arm/libffmpeg.so"...
    
        at java.lang.Runtime.loadLibrary0(Runtime.java:1016)
    
        at java.lang.System.loadLibrary(System.java:1657)
    
        at Jni.FFmpegCmd.<clinit>(FFmpegCmd.java:24)
    
        at Jni.FFmpegCmd.exec(FFmpegCmd.java:73)
    
        at VideoHandle.EpEditor.execCmd(EpEditor.java:571)
    
        at VideoHandle.EpEditor.exec(EpEditor.java:135)
    
        at com.joe.epmediademo.Activity.EditActivity.execVideo(EditActivity.java:182)
    
        at com.joe.epmediademo.Activity.EditActivity.onClick(EditActivity.java:106)
    
        at android.view.View.performClick(View.java:6297)
    
        at android.view.View$PerformClick.run(View.java:24797)
    
        at android.os.Handler.handleCallback(Handler.java:790)
    
        at android.os.Handler.dispatchMessage(Handler.java:99)
    
        at android.os.Looper.loop(Looper.java:164)
    
        at android.app.ActivityThread.main(ActivityThread.java:6626)
    
        at java.lang.reflect.Method.invoke(Native Method)
    
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
    
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:811)
    
</clinit>

  • Cannot include FFmpegMediaPlayer lib in my android project

    20 août 2015, par Lucabro

    I’ve to include in my Android studio project a lib for managing audio streams from urls. I’m tying to use this, but when I try to run the app and it reach the point where have to instantiate a FFmpegMediaPlayer object, it crush with the error

    31444-31444/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
    
    java.lang.ExceptionInInitializerError

    These the steps I’ve done to integrate the lib in my project :

    • I’ve copied all .so, gdb.setup and gdbserver files from demo project and put them into my jniLibs replicating the exact folder structure
    • I’ve copied fmp.jar from demo my libs forlder
    • I’ve changed all paths in gdb.setup files accordingly with my project folder structure
    • synch with gradle

    I’m not an expert of Android specially for tasks like this, am I missing something important ? If you need it I can give a test app

    Thankyou

    Edit 1

    This is the complete error

    08-19 10:20:42.066  31444-31444/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
    
    java.lang.ExceptionInInitializerError
    
            at com.example.lucabrognara.radiostreamprova.RadioActivity.onCreate(RadioActivity.java:126)
    
            at android.app.Activity.performCreate(Activity.java:5206)
    
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
    
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074)
    
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)
    
            at android.app.ActivityThread.access$700(ActivityThread.java:140)
    
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
    
            at android.os.Handler.dispatchMessage(Handler.java:99)
    
            at android.os.Looper.loop(Looper.java:137)
    
            at android.app.ActivityThread.main(ActivityThread.java:4921)
    
            at java.lang.reflect.Method.invokeNative(Native Method)
    
            at java.lang.reflect.Method.invoke(Method.java:511)
    
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)
    
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
    
            at dalvik.system.NativeStart.main(Native Method)
    
     Caused by: java.lang.UnsatisfiedLinkError: Cannot load library: link_image[1892]:  1836 could not load needed library 'libswresample.so' for 'libavcodec.so' (load_library[1094]: Library 'libswresample.so' not found)
    
            at java.lang.Runtime.load(Runtime.java:340)
    
            at java.lang.System.load(System.java:521)
    
            at wseemann.media.FFmpegMediaPlayer.<clinit>(FFmpegMediaPlayer.java:604)
    
            at com.example.lucabrognara.radiostreamprova.RadioActivity.onCreate(RadioActivity.java:126)
    
            at android.app.Activity.performCreate(Activity.java:5206)
    
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
    
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074)
    
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)
    
            at android.app.ActivityThread.access$700(ActivityThread.java:140)
    
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
    
            at android.os.Handler.dispatchMessage(Handler.java:99)
    
            at android.os.Looper.loop(Looper.java:137)
    
            at android.app.ActivityThread.main(ActivityThread.java:4921)
    
            at java.lang.reflect.Method.invokeNative(Native Method)
    
            at java.lang.reflect.Method.invoke(Method.java:511)
    
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)
    
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
    
            at dalvik.system.NativeStart.main(Native Method)
    
</clinit>

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