Google Drive Iframe not playin video in Safari browser - iframe

When you add a video via Google Drive, the video doesn't play. When you click on play, nothing happens.
The error was detected only in the Safari browser (Mac OS and iOS), on different devices. The Safari console displays the following:
In Google Drive, the video has permission and is available to everyone who has a link. The video works in Google Chrome, Firefox.
I don't use the API from Google, I only have an iframe that google itself suggests using.
My iframe:
<iframe src="https://drive.google.com/file/d/1tYPqwtbgNp17xXNR5mZH3SdeFTcUrTHt/preview" width="640" height="480" ></iframe>
Video testing takes place on a clean page, without scripts and styles

An embedded Google Drive video does play in Safari (just tested on iPhone with iOS 14.7) but only if you set 'Prevent Cross-Site Tracking' to OFF in Settings, Safari, Privacy & Security.
This is probably not an option for a public website!

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Custom Wordpress template page upon reload doesn't display any content but source code is all there

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Works fine in Chrome desktop browsers and Firefox desktop browsers - in media view and desktop view.
Doesn't reload on Safari desktop.
Doesn't reload on the following media devices: Android phones, iphone, ipad with Chrome incognito browser and Safari browser.
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Is bandwidth always taken from the site hosting the file?

If, for example, I use an iFrame to embed a YouTube video on a site, is it really true that the bandwidth is taken from, in this case, YouTube as it's the site hosting the file, and not from the site with the iFrame?
I just read about this here https://www.tipsandtricks-hq.com/reduce-your-websites-bandwidth-and-storage-usage-92 but haven't found anything else on it.
Try Chrome and the developer Tools > Tab "network".
There you can see exactly where a File/video/whatever is been downloaded.
A Youtube Video is downloaded from youtube.com and the HTML of your i Frame is downloaded from your server. The easyest Test is to hotlink some Images from other Websites, eg "https://stackoverflow.com/content/img/progress-dots.gif" als . The developer Tool in Chrome (or FF or Opera or Safari (if you activate it), or even F12 in IE (...) is showing the source and much more.

Google analytics https iframe does not work on chrome and safari

So I'm trying to embed the google analytics login page onto a page. Works fine on IE and Firefox. The website is hosted on a local machine.
Code:
<iframe src="https://www.google.com/analytics/settings/?et=reset&hl=en" height="1000px" width="100%">Your browser does not support iframes.</iframe>
Is this a bug in chrome safari or can I adapt my xhtml to fix this?
Edit :In the end I used the Google Analytics API with this PHP library http://code.google.com/p/gapi-google-analytics-php-interface/
and google chart api.
Google is setting response headers to explicitly block the loading of these pages into an iframe. The headers are respected by newer browsers, but not implemented in older ones. I suspect you're using a version of IE below 8 if this is working for you.

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