Bug#753471: konqueror: Black picture when trying to play youtube videos using html5
Hi! I fixed same problem on Debian Stretch by installing gstreamer1.0-libav and phonon-backend-gstreamer packages followed by system reboot. It looks like there is a problem in KDE4/Qt4 version of Phonon to play mp4 video contrainer and only gstreamer with libav plugin (libgstlibav.so) is able to do that for Phonon. -- Pali Rohár pali.ro...@gmail.com
Bug#753471: konqueror: Black picture when trying to play youtube videos using html5
On Wed, 2 Jul 2014 10:45:17 0200 Petter Reinholdtsen p...@hungry.com wrote: Package: konqueror Version: 4:4.12.4-1 Severity: normal When I visit youtube on a freshly installed Jessie desktop and try to watch a video, the video player seem to start as it should, show the duration and playout position, and even play the sound sound, but there is no image. Only a black video frame. I can confirm this issue with version 4:4.14.1-1 with both the KHTML and the WebKit mode. It does not work for 4:4.8.4-2, too. The corresponding upstream bug report seems to be https://bugs.kde.org/show_bug.cgi?id=229218 Visiting http://www.quirksmode.org/html5/tests/video.html, this seems to be a H.264/MP4 related problem, as both WebM and Ogg/Theora work (tested with 4:4.14.1-1 and WebKit) and only H.262/MP4 plays sound without pictures. I activated some debugging in kdebugdialog, but I couldn't spot anything obvious, though that might have gone lost in the noise. It might be related to this bug report: https://bugs.kde.org/show_bug.cgi?id=253061 If that should be true, QtWebKit would be related. This seems similar to this report: https://github.com/QupZilla/qupzilla/issues/573 In http://stackoverflow.com/questions/3066055/qtwebkit-problems-playing-html5-video it's mentioned, that Phonon might also be relevant. Switching the phonon backend from gstreamer to vlc seems to stop Ogg/Theora support on the above test page, although it dose not change the support for H.264/MP4 videos. But there definitely seems to be a relationship. I tried Rekonq and the support on http://www.quirksmode.org/html5/tests/video.html is identical to that of Konqueror using Konqueror's WebKit mode. So it does not seem to be something Konqueror specific. Then again, Arora, another WebKit based browser, works and supports all three files on testpage mentioned above. Arora is linked against Qt5 and Qt5WebKit, while both Konqueror and Rekonq are linked against Qt4 and the latter one also against libQtWebKit version 4. So it really seems to be QtWebKit4 related. Kind regards Patrick signature.asc Description: This is a digitally signed message part.
Bug#753471: konqueror: Black picture when trying to play youtube videos using html5
Package: konqueror Version: 4:4.12.4-1 Severity: normal Dear Maintainer, Not sure if this problem is with a library or the konqueror application as such, so I start by filing the bug against konqueror. Did not find a similar bug already reported. When I visit youtube on a freshly installed Jessie desktop and try to watch a video, the video player seem to start as it should, show the duration and playout position, and even play the sound sound, but there is no image. Only a black video frame. See for example URL: http://www.youtube.com/watch?v=o6voAW_Go5Y , which is working fine in Iceweasel, but not in konqueror. Could it be a problem with the canvas support in konqueror, incorrect X settings or something else? -- System Information: Debian Release: jessie/sid APT prefers testing-updates APT policy: (500, 'testing-updates'), (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 3.14-1-amd64 (SMP w/2 CPU cores) Locale: LANG=nb_NO.utf8, LC_CTYPE=nb_NO.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages konqueror depends on: ii install-info5.2.0.dfsg.1-4 ii kde-baseapps-bin4:4.12.4-1 ii kde-baseapps-data 4:4.12.4-1 ii kde-runtime 4:4.13.1-1 ii libc6 2.19-4 ii libkactivities6 4:4.13.1-1 ii libkcmutils44:4.13.1-1 ii libkde3support4 4:4.13.1-1 ii libkdecore5 4:4.13.1-1 ii libkdesu5 4:4.13.1-1 ii libkdeui5 4:4.13.1-1 ii libkfile4 4:4.13.1-1 ii libkhtml5 4:4.13.1-1 ii libkio5 4:4.13.1-1 ii libkonq5abi14:4.12.4-1 ii libkonqsidebarplugin4a 4:4.12.4-1 ii libkparts4 4:4.13.1-1 ii libqt4-dbus 4:4.8.6+dfsg-2 ii libqt4-qt3support 4:4.8.6+dfsg-2 ii libqt4-xml 4:4.8.6+dfsg-2 ii libqtcore4 4:4.8.6+dfsg-2 ii libqtgui4 4:4.8.6+dfsg-2 ii libstdc++6 4.9.0-7 ii libx11-62:1.6.2-2 Versions of packages konqueror recommends: ii dolphin 4:4.12.4-1 ii kfind4:4.12.4-1 ii konqueror-nsplugins 4:4.12.4-1 ii kpart-webkit 1.3.2-2 Versions of packages konqueror suggests: ii konq-plugins 4:4.12.4-1 -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#753471: konqueror: Black picture when trying to play youtube videos using html5
Hi. A quick followup after svuorela poked me on IRC and asked for a bit more detail. He asked which rendering engine was being used, and after checking View-Viewmode, I can report that the default setting I was using is webkit. I tried changing it to khtml, but then the video player did not play video at all. -- Happy hacking Petter Reinholdtsen -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
