@SCtriestodraw of course you can make them. but hosting is the problem. HTMl5 is literally just the newest version of HTML, it's what websites are written in. So allowing users to host an HTMl5 movie or game is like supplying a website host for the whole internet and allowing potentially dangerous javascripts to be run. Most likely this will mean that HTML5 movies will not be natively viewable from your browser on any site. You will have to download the file and open it offline.
if you want to share/view things in webpages online, thats what flash is for. you can still install and use flash in your browser in 2020, don't believe google, they are liars. just, don't use google's software, so; uninstall chrome and use a different browser. if that doesn't support flash player; Downgrade. see my post about firefox 51.0 here in comments. spread the word.
joshexdirad
How to Install and use flashplayer in your browser in 2020:
1: uninstall chrome or chromium browsers. or only use them as a backup for when you can't do something in firefox 51.0
2: get the firefox 51.0 offline installer from mozilla's website:
32:
https://ftp.mozilla.org/pub/firefox/releases/51.0/win32/en-US/ (US)
https://ftp.mozilla.org/pub/firefox/releases/51.0/win32/en-GB/ (UK)
64:
https://ftp.mozilla.org/pub/firefox/releases/51.0/win64/en-US/ (US)
https://ftp.mozilla.org/pub/firefox/releases/51.0/win64/en-GB/ (UK)
3: disconnect your computer from the internet.
4: install Firefox 51.0 WITHOUT MOZILLA MAINTENANCE SERVICE
5: in Firefox's settings disable any variation of updating
6: disable sharing any data with mozilla! no bug reports no nothing.
7: go online install flashplayer.
8: you have flashplayer in your browser in 2020.
9: google is jelly
10: install no script
https://web.archive.org/web/20180514152954/https://addons.mozilla.org/en-US/firefox/addon/noscript/versions/
11: never turn on analytics.google.com scripts only turn on google.com if you must use google or recaptcha. then disable it when not in use and kill any google cookies.
12: set duckduckgo.com as your default search engine in firefox.
13: google is madbro
13: google will go bankrupt.