Export Animations from Adobe Animate CC: 3 different Formats
The bottom line - Export your animation as an SWF and convert it to an MP4 using Swivel from NewGrounds: https://www.newgrounds.com/wiki/creat...
It yields the best quality, most compatibility and smallest filesize out of the alternatives.
The alternatives:
1. Animated GIFS are great for compatibility, but offer no audio
2. MOV videos are good, but LARGE in filesize
3. SWFs provide the best quality and filesize, but will not be compatible with Chrome after 2020