Player resizes well when you set all this correctly,
Width: Width of player. Shortcode attribute:** width_value; values: Number. 100 (default). (Optional).
Width dimensions: dimensionn of player width. Shortcode attribute:** width_type; values: % (default) or px. (Optional).
but Thumbnail width: indicates the width of the thumbnails. The height is automatically generated based on the aspect ratio selected. Shortcode attribute: thumb_width; value: Number. (Optional).
seem to be not working. Sadness