String[] filePathColumn = {MediaStore.Video.VideoColumns.DATA,
                        MediaStore.Video.VideoColumns.WIDTH,
                        MediaStore.Video.VideoColumns.HEIGHT};
cursor = mContext.getContentResolver().query(mVideoUri, filePathColumn, null, null, null);
if (cursor != null && cursor.moveToFirst()) {
      mVideoDecodableString = cursor.getString(cursor.getColumnIndex(filePathColumn[0]));
      mVideoWidth = cursor.getInt(cursor.getColumnIndex(filePathColumn[1]));
      mVideoHeight = cursor.getInt(cursor.getColumnIndex(filePathColumn[2]));
}