Preview seek bar

    @Override
    public void loadPreview(long currentPosition, long max) {
        float offset = (float) currentPosition / max;
        int scale = player.getDuration() >= ROUND_DECIMALS_THRESHOLD ? 2 : 1;
        float offsetRounded = roundOffset(offset, scale);
        player.setPlayWhenReady(false);
        previewPlayer.seekTo((long) (offsetRounded * previewPlayer.getDuration()));
        previewPlayer.setPlayWhenReady(false);
        View view = previewPlayerView.getVideoSurfaceView();
        if (view instanceof SurfaceView) {
            view.setVisibility(View.VISIBLE);
        }
    }