HTML5 <video> 태그가 Firefox에서 작동하지 않습니다.

Question

<video poster="https://res.cloudinary.com/deesul/image/upload/v1482128248/Up_ci3qna.jpg" autoplay="true" loop preload="auto" > 
    <source src="https://res.cloudinary.com/deesul/video/upload/v1482630062/Up_1_ofz5ri.ogv" type="video/ogv"> 
<source src="https://res.cloudinary.com/deesul/video/upload/v1482126175/Up_srxisl.webm" type='video/webm; codecs="vp8.0, vorbis"'>  
    <source src="https://res.cloudinary.com/deesul/video/upload/v1482126174/Up_tle5de.mp4" type="video/mp4">  
</video> 

이 글은 포스터와 비디오를 파이어 폭스에 표시하지 않습니다. 파이어 폭스에서이 문제를 해결하도록 도와주세요.

Answer 1

이 MDN 및 W3C

<video width="600px" height="320px" class="video" controls poster="https://unsplash.it/598/320"> 
 
    <source src=http://techslides.com/demos/sample-videos/small.webm type=video/webm> 
 
    <source src=http://techslides.com/demos/sample-videos/small.ogv type=video/ogg> 
 
    <source src=http://techslides.com/demos/sample-videos/small.mp4 type=video/mp4> 
 
<source src=http://techslides.com/demos/sample-videos/small.3gp type=video/3gp> 
 
</video>