The audio and video html 5 tag has support from IE 9 and up and really good support on mobile. You can use these tags if we can’t use a third party to host the media like YouTube.
#Audio
<audio src="filename.mp3"></audio>
##Audio Attributes
autoplay
controls="controls"
#Video Tag
<video src="filename.mp4" autoplay poster="posterimage.jpg"></video>
Please make sure all of the videos you embed are .mp4 before uploading them in the CMS.