[Webkit-unassigned] [Bug 161963] New: [GTK] Gifv videos from Imgur.com don't get displayed when opened from a "direct" link

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=161963

            Bug ID: 161963
           Summary: [GTK] Gifv videos from Imgur.com don't get displayed
                    when opened from a "direct" link
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Local Build
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P3
         Component: WebKit Gtk
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: junrrein at gmail.com
                CC: bugs-noreply at webkitgtk.org

Created attachment 288813
  --> https://bugs.webkit.org/attachment.cgi?id=288813&action=review
Video showing the difference when loading the same video using different URLs

Using:
Opensuse Tumbleweed
Epiphany             3.20.3
WebkitGtk            2.13.91 (It also happened on 2.12.x)

This issue happens with the custom gifv video format used by Imgur.com.

When viewing one of these using the "main" webpage, the video gets loaded correctly.
Sample link: http://imgur.com/8RXhbLz

When viewing one of these using a "direct" link, the video doesn't get loaded correctly.
Sample link: http://i.imgur.com/8RXhbLz.gifv

I don't know whether the issue lies within WebitGtk or not, but I don't have the knowledge or expertise necessary to determine where it is. Hopefully you can help me with that.

I'm attaching a video showing the issue.

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