[Webkit-unassigned] [Bug 183259] [GStreamer] Cannot play particular videos

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=183259

Michael Catanzaro <mcatanzaro at redhat.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |WORKSFORME
             Status|REOPENED                    |RESOLVED

--- Comment #26 from Michael Catanzaro <mcatanzaro at redhat.com> ---
Looking at the GStreamer debug log, I think the problem on Jakub's website in bug #221622. I'll avoid attaching the debug log here because I'm pretty sure that's a different problem from the bug with https://raw.githubusercontent.com/gnome-design-team/gnome-mockups/master/gtk/loop5.webm.

In fact, it's impossible to reproduce the original bug here because WebKit no longer supports the content type and downloads rather than loads https://raw.githubusercontent.com/gnome-design-team/gnome-mockups/master/gtk/loop5.webm, as I mentioned above in comment #20. The content type header for this file is audio/webm. That actually looks like a GitLab bug, because it should be a video, not audio. But anyway, I tested in Firefox and Firefox does not support audio/webm either. So the original bug with https://raw.githubusercontent.com/gnome-design-team/gnome-mockups/master/gtk/loop5.webm is no longer valid.

The next broken video mentioned in this bug is https://gnome.modular.im/_matrix/media/r0/download/gnome.org/62a43e4dd1f71c657be994f79a4a203db9c9e708/video_514ec09.mp4, which got split out into... bug #221622. Moving on.

The remaining problem here is https://bugs.webkit.org/attachment.cgi?id=451573. This video plays fine in Firefox but not in Epiphany. I got yet another debug log for this and decided this video is also broken due to bug #221622, same problem as with Jakub's video.

So I think there is nothing more to fix here, at least not for now. Closing. I strongly suspect we still have a bug that causes WebM video documents to not work, but we'll have to resolve bug #221622 first before we can make further progress, since that seems to be breaking a large number of videos.

BTW, to get the debug log, I followed the instructions from https://trac.webkit.org/wiki/WebKitGTK/Debugging#Debuggingmultimediastuff, but they will be lost when trac disappears. It would be good to add instructions for GStreamer debugging to https://docs.webkit.org/

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