mediaplayer video playback does not work with Qt 5.3 on armhf

[Timo Jyrinki]

With Qt 5.3 the video player does start its UI but the video screen says black and the playback doesn't start.

media-hub.log: http://pastebin.ubuntu.com/7492720/

After GST_DEBUG=*:4 CORE_UBUNTU_MEDIA_SERVICE_VIDEO_SINK_NAME=mirsink media-hub-server: http://pastebin.ubuntu.com/7492743/ + http://pastebin.ubuntu.com/7492754/

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Refer to kept-update info on the front page of https://launchpad.net/~canonical-qt5-edgers/+archive/qt5-beta2 regarding where/how to get Qt 5.3. Note that it's not necessarily that PPA itself.

[Jim Hodapp (jhodapp)]

Keep me posted on your plans to try other things. Given that the camera video preview doesn't work either, I believe there is something not quite correct in terms of recompiling all of the dependencies with the new Qt 5.3.

[Timo Jyrinki (timo-jyrinki)]

Currently I have no plans on what else could be tried on the Qt side. You can see the recompiled packages at:
https://launchpad.net/~canonical-qt5-edgers/+archive/qt5-beta2/+packages

Everything that has been thought as being needed (qtubuntu, qtubuntu-camera, qtubuntu-media, qtvideo-node) has been recompiled and then some more (media-hub, qtubuntu-media-signals etc). If there's still something more, it'd be good to know.

[Jim Hodapp (jhodapp)]

I would also try recompiling QtMultimedia just to be thorough. I can't think of anything else at this point.

[Timo Jyrinki (timo-jyrinki)]

QtMultimedia is updated 5.3.0 similar to other Qt modules, so it has been recompiled as well. It's probably either something that needs changing at a low level or an actual upstream problem, but good debugging would be needed on what's the problem if it's the latter.

[Timo Jyrinki (timo-jyrinki)]

An update from the desktop: both camera and mediaplayer (webm files) work on the desktop with Qt 5.3, although both of them have a green background unlike on Qt 5.2.

[Timo Jyrinki (timo-jyrinki)]

I filed bug #1323960 regarding the camera problem, even though the bugs may be related.

[Timo Jyrinki (timo-jyrinki)]

And bug #1324105 for music-app crashing and bug #1324106 for sound settings crashing. Again, these might all be related to some single problem in the multimedia system, or be multiple separate problems, but I can't decipher that.

[Timo Jyrinki (timo-jyrinki)]

Sound settings one got fixed by upstream Qt fix that fixed a lot of crashers and apparently also that one. Others (video playback, camera, music app) are still as valid as before.

[Timo Jyrinki (timo-jyrinki)]

With https://code.launchpad.net/~ricmm/qtvideo-node/qt-53-build/+merge/222344 added to the PPA now, media playback and camera seem fixed!

Music app crasher bug #1324105 is still valid, though, and is therefore unrelated.

[Jim Hodapp (jhodapp)]

Video playback is working, however there's a new bug where the video freezes after a few minutes of playback and gets very choppy. Will file a separate bug for this issue on Qt 5.3.