[Webkit-unassigned] [Bug 173796] New: [GStreamer] Browsers that use WebkitGTK play some videos with severe distortion if using VA-API.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=173796

            Bug ID: 173796
           Summary: [GStreamer] Browsers that use WebkitGTK play some
                    videos with severe distortion if using VA-API.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media Elements
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rfarmer84 at outlook.com

Created attachment 313758

  --> https://bugs.webkit.org/attachment.cgi?id=313758&action=review

The distortions when I play a video.

Description of problem:

Browsers that use WebkitGTK play some videos with severe distortion if using VA-API. I've tried this with Gnome Web and Midori. To make sure it wasn't a problem with Gstreamer, I downloaded a local copy of the video and played it in Totem, and it worked fine.


Version-Release number of selected component (if applicable):

WebkitGTK4 2.16.4-1 as provided by Fedora 26


How reproducible:


Steps to Reproduce:

1. Open Gnome Web or Midori with Gstreamer VA API support, Intel VA API driver, Gstreamer's Bad, Ugly, etc. plug ins...

2. Go to certain videos on Youtube or other sites, such as https://www.youtube.com/watch?v=JccW-mLdNe0

3. Notice bizarre video distortions instead of proper playback.


Additional info:

I've attached a picture that shows what I'm talking about.

If it's important, I'm using an Intel Skylake Mobile Iris 540 graphics chipset and the VA API driver  1.8.2 from RPM Fusion. Mesa version is 17.1.3.

Device: Mesa DRI Intel(R) Iris Graphics 540 (Skylake GT3e)  (0x1926)
vainfo: Driver version: Intel i965 driver for Intel(R) Skylake - 1.8.2

This bug report is copied from Red Hat's Bugzilla bug #1464599 at https://bugzilla.redhat.com/show_bug.cgi?id=1464599

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