Survey \u8c03\u67e5
- video + background music only (faster production rate) \u89c6\u9891 + \u80cc\u666f\u97f3\u4e50 \uff08\u51fa\u4ea7\u7387\u8f83\u5feb\uff09 31
- video + background music + sound effect (slower production rate) \u89c6\u9891 + \u80cc\u666f\u97f3\u4e50 + \u97f3\u6548 (\u51fa\u4ea7\u7387\u8f83\u6162\uff09 59