Video showing in wrong order when using TextureView in ListView

I have a Listview that displays a video in some rows so that the user can view the video through the listview using a TextureView. So far the videos are loading and playing correctly, but they seem to appear in the wrong order at times when scrolling. I suppose it has something to do with looking at the adapter utility, but I'm not sure how to fix it.

here is my implementation

There is a getView that handles rendering of the views, and then an AsyncTask is created, triggered by getView to set up the MediaPlayer for each view.

@Override
public View getView(int position, View view, ViewGroup parent) {
    final ViewHolder holder;

    final VoucherItem vItem = items.get(position);

    if (view == null) {
        view = inflater.inflate(R.layout.voucher_row, parent, false);
        holder = new ViewHolder();

        holder.list_img = (ImageView) view.findViewById(R.id.list_img);         
        holder.vid_play = (ImageView) view.findViewById(R.id.vid_play);
        holder.video = (TextureView) view.findViewById(R.id.texture_video);

        view.setTag(holder);
    } else {
        holder = (ViewHolder) view.getTag();
    }



        if (!vItem.photo.equals(""))
            Picasso.with(context).load(vItem.photo).fit().centerCrop()
                    .into(holder.list_img);
        else
            Picasso.with(context).load(R.drawable.default_spuare).fit()
                    .centerCrop().into(holder.list_img);


        if (!vItem.photo.equals("")){
            holder.vid_play.setVisibility(View.GONE);
            holder.video.setVisibility(View.GONE);
            holder.list_img.setVisibility(View.VISIBLE);
        } else {                
            holder.video.setVisibility(View.VISIBLE);
            holder.list_img.setVisibility(View.GONE);

            holder.video.setSurfaceTextureListener(new SurfaceTextureListener() {

                @Override
                public void onSurfaceTextureUpdated(SurfaceTexture arg0) {

                }

                @Override
                public void onSurfaceTextureSizeChanged(SurfaceTexture arg0, int arg1,
                        int arg2) {                     
                }

                @Override
                public boolean onSurfaceTextureDestroyed(SurfaceTexture arg0) {
                    return false;
                }

                @Override
                public void onSurfaceTextureAvailable(SurfaceTexture surface, int arg1, int arg2) {
                    final MediaPlayer mediaPlayer = new MediaPlayer();
                    holder.vid_play.setTag(mediaPlayer);
                    new SetVideotask().execute(surface, vItem, mediaPlayer, holder.vid_play);                       
                }
            });
        }
    }

    return view;
}

class SetVideotask extends AsyncTask<Object, Integer, String>{

    @Override
    protected String doInBackground(Object... o) {
        // TODO Auto-generated method stub
        final SurfaceTexture s = (SurfaceTexture) o[0];
        final VoucherItem item = (VoucherItem) o[1];
        final MediaPlayer mediaPlayer = (MediaPlayer) o[2];
        final View v = (View) o[3];


        mediaPlayer.setSurface(new Surface(s));
        try {

            mediaPlayer.setDataSource(item.video);
            mediaPlayer.prepare();
            mediaPlayer.start();
            //I do this so there is a frame in the video to act as a preview
            Thread.sleep(100);
            mediaPlayer.pause();    
            mediaPlayer.setOnErrorListener(VoucherAdapter.this);                
        } catch (Exception e) {
            e.printStackTrace();
        }           

        return null;
    }       
}



static class ViewHolder {
    ImageView list_img;
    ImageView vid_play;
    TextureView video;
}


@Override
public boolean onError(MediaPlayer arg0, int arg1, int arg2) {
    return true;
}