[Interest] Phonon video

[Joseph Crowell]

Phonon probably isn't broken. Your codecs most likely are. Its 
surprising that Windows Media player will play them though. Windows 
media Player might be the culprit that broke your codecs.
> On 03/29/2012 10:59 AM, Jason H wrote:
>> I hate to ask this, but have you rebooted?
>>
> Along that vein. There is a great sitcom called "The IT Crowd"
> that came out of Great Britain. You can find it on Netflix.
> The line "Have you tried turning it off and on." is used
> constantly. Must see.
>
> Bill
>
>> And I'd love to see your filter graph.
>>
>>
>>
>> ----- Original Message -----
>> From: Bo Thorsen<bo at fioniasoftware.dk>
>> To: Jason H<scorp1us at yahoo.com>
>> Cc: Qt Project MailingList<interest at qt-project.org>
>> Sent: Thursday, March 29, 2012 9:59 AM
>> Subject: Re: [Interest] Phonon video
>>
>> Hi Jason,
>>
>> Thanks for the attempt :)
>>
>> As I say in the description, it worked last week, now it doesn't. So
>> it's not a question of installing working codecs, because I didn't
>> uninstall any of them.
>>
>> Also, when I first tried to play the files we use, WMP wasn't able to
>> play them, so Phonon wasn't either. Then I installed the codecs, and
>> both were able to play them. Now, only WMP can play the files.
>>
>> About the QtMultimedia: The detailed description of the module says "The
>> functionality provided by the Phonon Module is on a higher level and in
>> many cases more suitable for application developers."
>>
>> But maybe I have to use it if Phonon is broken beyond reasonable repair.
>>
>> Bo.
>>
>> Den 29-03-2012 15:48, Jason H skrev:
>>> I thought QtMultimediaKit was the way to go?
>>>
>>> I would suspect that something in the DS filter graph changed. Verify you have a valid path for the file type you are trying to play: http://msdn.microsoft.com/en-us/library/ms787460.aspx
>>> Keep in mind you still need to install video codecs because mingw version of Qt does not work with Windows7's new media interfaces. Installing K-Lite Codec pack usigally works for me.
>>>
>>>
>>>
>>> ----- Original Message -----
>>> From: Bo Thorsen<bo at fioniasoftware.dk>
>>> To: Qt Project MailingList<interest at qt-project.org>
>>> Cc:
>>> Sent: Thursday, March 29, 2012 8:34 AM
>>> Subject: [Interest] Phonon video
>>>
>>> Hi people,
>>>
>>> I've been trying to figure out why phonon suddenly doesn't work anymore.
>>> It plays audio just fine but not video. I'm completely stuck.
>>>
>>> I built and ran the qmediaplayer demo and saw the same thing, so it's
>>> not my code. And the same code plays the files just fine on Linux. But
>>> just for reference, here it is anyway:
>>>
>>>          mPlayer = new Phonon::MediaObject(this);
>>>          mVideo = new Phonon::VideoWidget;
>>>          Phonon::createPath(mPlayer, mVideo);
>>>          if (!mPlayer->hasVideo()) {
>>>              qDebug()<<    "Phonon video sink is not available";
>>>              ...
>>>          }
>>>
>>> hasVideo() returns false, and any attempt at adding a video file to
>>> Phonon gives me a "Pause Called" in the debug output window. This is the
>>> code used to play a file:
>>>
>>>          mVideo->show();
>>>          mVideo->resize(200, 200);
>>>          mPlayer->enqueue(Phonon::MediaSource(filename));
>>>          mPlayer->play();
>>>
>>> Calling Phonon::BackendCapabilities::availableMimeTypes() gives me a
>>> list of 54 mimetypes with both audio and video types in it. The files
>>> I'm trying to play are supported, and Windows Media Player plays them
>>> just fine.
>>>
>>> Now here's the really strange part: Last week it worked. But suddenly,
>>> video playback is gone. I have no clue what happened in between. I might
>>> have updated Windows, but if that breaks Phonon, we have a real problem.
>>>
>>> I can see that the DS94 backend is still there in both my 4.8.0 and
>>> 4.7.4 plugins.
>>>
>>> This really worries me. The code is for a customer with an embedded
>>> system that's going to be deployed on machines in many countries.
>>> Calling those back to fix a Phonon problem *is not* an option. If Phonon
>>> can't deliver a stable environment (and I currently seriously doubt
>>> this), I will have to ditch it.
>>>
>>> I obviously tried to search the net for this, and found plenty of people
>>> with the same result. But none with a solution for it. I hope someone
>>> here can help.
>>>
>>> I'm on Windows 7 x64 and Windows XP 32 bit, using a fully updated SDK
>>> 2.4.1 with both visual studio 8 and mingw compilers and Qt versions
>>> 4.8.0 and 4.7.4.
>>>
>>> Bo Thorsen,
>>> Fionia Software.
>>>
>>
>> Bo Thorsen,
>> Fionia Software.
>>
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