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Bug 2099334 - Can not play yelp videos
Summary: Can not play yelp videos
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: webkit2gtk3
Version: 8.7
Hardware: Unspecified
OS: Unspecified
unspecified
medium
Target Milestone: rc
: ---
Assignee: Michael Catanzaro
QA Contact: Michal Odehnal
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-06-20 15:18 UTC by Radek Duda
Modified: 2022-11-08 12:27 UTC (History)
4 users (show)

Fixed In Version: webkit2gtk3-2.36.5-1.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2022-11-08 10:46:37 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-125775 0 None None None 2022-06-20 15:33:01 UTC
Red Hat Product Errata RHSA-2022:7704 0 None None None 2022-11-08 10:46:59 UTC
WebKit Project 242156 0 None None None 2022-06-30 02:10:31 UTC

Description Radek Duda 2022-06-20 15:18:49 UTC 
Description of problem:
No video in yelp is played

Version-Release number of selected component (if applicable):
webkit2gtk3-jsc-2.36.1-1.el8.x86_64
yelp-3.28.1-3.el8.x86_64

How reproducible:
always

Steps to Reproduce:
1.Open yelp
2. Click on "Getting started with GNOME"
3. Play some video (e.g. "Launch applications")

Actual results:
no video is played

Expected results:
Video is played

Additional info:
This bug shows up after webkit2gtk3 upgrade to webkit2gtk3-jsc-2.36.1-1.el8.x86_64. 
There is no such issue with webkit2gtk3-2.34.6-1.el8.x86_64
Comment 1 Michael Catanzaro 2022-06-20 19:36:46 UTC 
What happens if you run:

$ WEBKIT_DISABLE_COMPOSITING_MODE=1 yelp

Does that fix the video?
Comment 2 Radek Duda 2022-06-21 12:37:55 UTC 
It does not fix the video.

Nevertheless I made some debugging attempt ($ export GST_DEBUG="3,webkit*:6" GST_DEBUG_FILE="$HOME/gst.log" GST_DEBUG_NO_COLOR=1 WEBKIT_FORCE_SANDBOX=0) and cough this excerpt with ERRORs (full debug log in attachment):

0:00:00.146036288  4822 0x561c5fcb4600 DEBUG      webkitmediaplayer MediaPlayerPrivateGStreamer.cpp:1840:operator(): got missing plugin installation callback with result 203
0:00:00.146095073  4822 0x561c5fcb4600 WARN               structure gststructure.c:1863:priv_gst_structure_append_to_gstring: No value transform to serialize field 'gerror' of type 'GError'
0:00:00.146122003  4822 0x561c5fcb4600 ERROR           webkitcommon GStreamerCommon.cpp:466:operator():<media-player-0> Got message: error message: 0x561c60385cb0, time 99:99:99.999999999, seq-num 59, element 'uridecodebin0', GstMessageError, gerror=(GError)NULL, debug=(string)"gsturidecodebin.c\(1409\):\ gen_source_element\ \(\):\ /GstPlayBin:media-player-0/GstURIDecodeBin:uridecodebin0";
0:00:00.146147649  4822 0x561c5fcb4600 LOG        webkitmediaplayer MediaPlayerPrivateGStreamer.cpp:1708:handleMessage:<media-player-0> Message error received from element uridecodebin0
0:00:00.146180206  4822 0x561c5fcb4600 WARN               structure gststructure.c:1863:priv_gst_structure_append_to_gstring: No value transform to serialize field 'gerror' of type 'GError'
0:00:00.146202578  4822 0x561c5fcb4600 ERROR           webkitcommon GStreamerCommon.cpp:466:operator():<media-player-1> Got message: error message: 0x561c603a0a30, time 99:99:99.999999999, seq-num 139, element 'uridecodebin1', GstMessageError, gerror=(GError)NULL, debug=(string)"gsturidecodebin.c\(1409\):\ gen_source_element\ \(\):\ /GstPlayBin:media-player-1/GstURIDecodeBin:uridecodebin1";
0:00:00.146224398  4822 0x561c5fcb4600 LOG        webkitmediaplayer MediaPlayerPrivateGStreamer.cpp:1708:handleMessage:<media-player-1> Message error received from element uridecodebin1
0:00:00.146254924  4822 0x561c5fcb4600 ERROR      webkitmediaplayer MediaPlayerPrivateGStreamer.cpp:1714:handleMessage: Error 12: No URI handler implemented for "bogus-help". (url=bogus-help:/gnome-help/figures/gnome-task-switching.webm)
0:00:00.146349303  4822 0x561c5fcb4600 WARN               structure gststructure.c:1863:priv_gst_structure_append_to_gstring: No value transform to serialize field 'gerror' of type 'GError'
0:00:00.146389031  4822 0x561c5fcb4600 ERROR           webkitcommon GStreamerCommon.cpp:466:operator():<media-player-2> Got message: error message: 0x561c603b21c0, time 99:99:99.999999999, seq-num 219, element 'uridecodebin2', GstMessageError, gerror=(GError)NULL, debug=(string)"gsturidecodebin.c\(1409\):\ gen_source_element\ \(\):\ /GstPlayBin:media-player-2/GstURIDecodeBin:uridecodebin2";
0:00:00.146428686  4822 0x561c5fcb4600 LOG        webkitmediaplayer MediaPlayerPrivateGStreamer.cpp:1708:handleMessage:<media-player-2> Message error received from element uridecodebin2
0:00:00.146452332  4822 0x561c5fcb4600 ERROR      webkitmediaplayer MediaPlayerPrivateGStreamer.cpp:1714:handleMessage: Error 12: No URI handler implemented for "bogus-help". (url=bogus-help:/gnome-help/figures/gnome-windows-and-workspaces.webm)


those ERRORs are not present in debug log with working webkit2gtk3-2.34.6-1.el8.x86_64 version.
Comment 4 Michael Catanzaro 2022-06-21 13:24:36 UTC 
I think this is an upstream bug, but we never noticed because all the videos have long since been removed from the upstream user help. The affected code is https://gitlab.gnome.org/GNOME/yelp/-/blob/gnome-3-28/libyelp/yelp-uri-builder.c
Comment 5 Michael Catanzaro 2022-06-21 13:34:34 UTC 
Upstream thinks it might be caused by https://github.com/WebKit/WebKit/commit/e414eb4401d6fdeedc70fe7a27129d9d0489b55b. If not, I will probably have to bisect WebKit to see when it broke.
Comment 6 Michael Catanzaro 2022-06-29 19:52:03 UTC 
(In reply to Michael Catanzaro from comment #5)
> Upstream thinks it might be caused by
> https://github.com/WebKit/WebKit/commit/
> e414eb4401d6fdeedc70fe7a27129d9d0489b55b. If not, I will probably have to
> bisect WebKit to see when it broke.

It's not that commit. I am bisecting.
Comment 7 Michael Catanzaro 2022-06-30 02:10:32 UTC 
Upstream: https://bugs.webkit.org/show_bug.cgi?id=242156

It looks like a one-line change, so hopefully will be easy to solve.
Comment 12 errata-xmlrpc 2022-11-08 10:46:37 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: webkit2gtk3 security and bug fix update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2022:7704
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