How to remove sound from already saved video

Question

I am trying to remove sound from already stored video in my gallery and then wanna save it back without sound. I have researched a lot but didn't get suitable answer to my problem. I have also tried JAVE but it just extracts sound from target video. Below is my code, please suggest me how can i solve this problem. Thanks in advance :)

public class MainActivity extends AppCompatActivity implements EasyVideoCallback {

    private static final String TAG = "MainActivity";
    private EasyVideoPlayer player;

    //variables for path
    private static final int SELECT_VIDEO = 1;
    private String selectedVideoPath;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        player = (EasyVideoPlayer) findViewById(R.id.player);
        assert player != null;
        player.setCallback(this);

        Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Video.Media.EXTERNAL_CONTENT_URI);
        startActivityForResult(Intent.createChooser(intent,"Select Video"), SELECT_VIDEO);
    }

    @Override
    protected void onPause() {
        super.onPause();
        player.pause();
    }

    @Override
    public void onStarted(EasyVideoPlayer player) {
    }

    @Override
    public void onPaused(EasyVideoPlayer player) {
    }

    @Override
    public void onPreparing(EasyVideoPlayer player) {
        Log.d("EVP-Sample", "onPreparing()");
    }

    @Override
    public void onPrepared(EasyVideoPlayer player) {
        Log.d("EVP-Sample", "onPrepared()");
        player.setVolume(0,0);
        player.save
    }

    @Override
    public void onBuffering(int percent) {
        Log.d("EVP-Sample", "onBuffering(): " + percent + "%");
    }

    @Override
    public void onError(EasyVideoPlayer player, Exception e) {
        Log.d("EVP-Sample", "onError(): " + e.getMessage());
        new MaterialDialog.Builder(this)
                .title(R.string.error)
                .content(e.getMessage())
                .positiveText(android.R.string.ok)
                .show();
    }

    @Override
    public void onCompletion(EasyVideoPlayer player) {
        Log.d("EVP-Sample", "onCompletion()");
    }

    @Override
    public void onRetry(EasyVideoPlayer player, Uri source) {
//        Toast.makeText(this, "Retry", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onSubmit(EasyVideoPlayer player, Uri source) {
        Toast.makeText(this, "Save", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onClickVideoFrame(EasyVideoPlayer player) {
//        Toast.makeText(this, "Click video frame.", Toast.LENGTH_SHORT).show();
    }

    @ Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode == RESULT_OK) {
            if (requestCode == SELECT_VIDEO) {

                Uri selectedImageUri = data.getData();

                // OI FILE Manager
                String filemanagerstring = selectedImageUri.getPath();

                // MEDIA GALLERY

                selectedVideoPath = getPath(data.getData());
                if(selectedVideoPath == null) {
                    Log.i(TAG, "selected video path = null!");
                } else {
                    player.setSource(selectedImageUri);
                    Log.e(TAG, "selected video path: " + selectedVideoPath);
                }
            }
        }
    }

    public String getPath(Uri uri) {
        String[] projection = { MediaStore.Video.Media.DATA };
        Cursor cursor = getContentResolver().query(uri, projection, null, null, null);
        if (cursor != null) {
            // HERE YOU WILL GET A NULLPOINTER IF CURSOR IS NULL
            // THIS CAN BE, IF YOU USED OI FILE MANAGER FOR PICKING THE MEDIA
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA);
            cursor.moveToFirst();
            return cursor.getString(column_index);
        } else
            return null;
    }
}

Answer 1

if you want to remove sound from the video then use FFmpeg library. complete documentation of this library is here

implementation of FFmpeg in android is here check it out

You need to write the command of removing audio from video and here is the command.

   ffmpeg -i example.mkv -c copy -an example-nosound.mkv

just pass this command in the ffmpeg and enter the input video location and ouput location.

Answer 2

I used FFMPG library in android for do this. u can search how to use FFMPG library in android

https://github.com/WritingMinds/ffmpeg-android