0.8ร1ร1.2ร1.5ร1.7ร2ร2.5ร12 minโก๏ธ15 min12 min9 min 48 sec7 min 51 sec6 min 55 sec5 min 53 sec4 min 42 secIntroduction0.8ร1ร1.2ร1.5ร1.7ร2ร2.5ร12 minโก๏ธ15 min12 min9 min 48 sec7 min 51 sec6 min 55 sec5 min 53 sec4 min 42 secIntroductionYour user agent does not support the HTML5 Video element.