To add FFmpeg support to your app:

Add this permission to your manifest:

android.permission.WRITE_EXTERNAL_STORAGE

Make sure the your app application tag in the Manifest contains: android:extractNativeLibs="true"

Add this line to your app gradle.build:

implementation 'com.netcompss:ffmpeg4android_lib:41.08'

And you are done!

Test it by adding to your activity onCreate:

GeneralUtils.checkForPermissionsMAndAbove(MainActivity.this, true);

LoadJNI vk = new LoadJNI();

try {

    String workFolder = getApplicationContext().getFilesDir().getAbsolutePath();
    
    String[] complexCommand = {"ffmpeg","-i", "/sdcard/videokit/in.mp4"};
    
    vk.run(complexCommand , workFolder , getApplicationContext());
    
    Log.i("test", "ffmpeg4android finished successfully");
    
} catch (Throwable e) {

    Log.e("test", "vk run exception.", e);
    
}

Make sure your device contains the in.mp4 file (small mp4 file for the tests), in this location: /sdcard/videokit/in.mp4. You can get it from the demo assets folder: ffmpeg4android/ffmpeg4android_demo/src/main/assets/