Video don't play in Firefox (but play in Chrome)

Question

I try to add the video tag on a website, but I encounter a problem. The video is well played in Chrome but not in Firefox even the URL is correct.

<video src="http://127.0.0.1/st_martin/index.php/fre/content/download/89/643/file/test-video.mp4" width="640" height="266" poster="/st_martin/var/ezwebin_site/storage/images/les-partenaires/l-auberge-gourmande/video-1/764-5-fre-FR/Video-1_large.png" controls>  
    Your browser does not support the <code>video</code> element.  
</video>  

And enervous thing : when I copy/paste file URL in firefox it plays the video without any problem.

Using embed video player cause a neverending loading animation.

Answer 1

Firefox does not support .mp4 playback. Try conveting the video to .ogg format which is fast becoming a standard format for html 5 applications.