Play web videos like youtube through a webview ? Perhaps a free extension?

Is there an extension comparable with the webview to play videos off the web like YouTube for free? because I cant find any

You should be able to use webviewer (with or without an extension) or customwebview to view web videos.

So I forget but the videos work but are very buffery and lag a lot plus with webviewextra it can't go full screen.

No buffering or lag here (on wifi). Fullscreen is another matter.

Perhaps this instead ?

How would I make the videos full screen using the built in button on the page and for any page

If you are talking about the PLYR extension you will need to ask the developer.

Seems you mean in a webviewer.

There appears to be a solution here would require more code in webviewextra (this is not really what webviewextra is for) or a separate extension, but there is no guarantee it would work.

Yes but the link you gave me is in java or python not mit app inventor

Correct

Seems you may need to switch back to customwebview, if you want fullscreen.

but I want to use webviewextra for the fact of the downloading and tabs capabilites

Those are both available with customwebview

Oh ok thanks