[Webkit-unassigned] [Bug 211323] New: Videos from certain CDNs not loading

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=211323

            Bug ID: 211323
           Summary: Videos from certain CDNs not loading
           Product: WebKit
           Version: Safari 13
          Hardware: All
                OS: All
            Status: NEW
          Severity: Major
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: dev at ricompro.it
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Created attachment 398242

  --> https://bugs.webkit.org/attachment.cgi?id=398242&action=review

Example showing the issue of the video loading on Chrome but not on Safari

When using certain CDNs to serve content, videos are not displayed on Safari without throwing any console error but successfully rendered on Chrome. Nevertheless, a right click shows the option to download the video. 

Example: 
https://www.intexcorp.com/video-test/

<div class="container">
        <p>Through CDN</p>
        <video playsinline="" autoplay="" loop="" muted="">
            <source src="https://cdn11.bigcommerce.com/s-u7yn5f7nmq/content/videos/cover.mp4" type="video/mp4">
        </video>
        <p>Direct Path</p>
        <video playsinline="" autoplay="" loop="" muted="">
            <source src="https://www.intexcorp.com/content/videos/cover.mp4" type="video/mp4">
        </video>
</div>

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