Phonon Media Format Support

[somnathbanik]

Hi,
I am checked and found that Phonon can't play all types of media files. It can't play mp4 and flv. will we get the fix in the next release of Qt SDK, or is there any other way to fix it.

[Talei]

Phonon is only a back-end, that means everything what can play Your OS native vide player can play Phonon. See doc for more details. (and yes phonon plays mp4 and flv's with correct codec installed).

[somnathbanik]

Phonon is only a back-end, that means everything what can play Your OS native vide player can play Phonon. See doc for more details. (and yes phonon plays mp4 and flv's with correct codec installed).

If that is the case then my app should play mp4 files, cause I am running the app on Windows7 and the default WMP can play the mp4 file but not my app can play the same mp4 file. Could you please put some llight on it.

[tbscope]

How do you open the file?

[somnathbanik]

How do you open the file?

I double click on the MP4 file and it opens on windows Media Player.

[tbscope]

With Phonon I mean.

This can be a couple of things:
1. You do not have the correct codec installed. Media Player might use a different codec (even internal code). Check the capabilities of the backend.
2. There's something wrong with the backend. In your case that would be the DS backend I think.
3. You did not create the correct Phonon/Qt code to play the video. Hence the question, how do you open the file.

[somnathbanik]

this is the code I used

3.

void HelloMeego::on_pushButton_4_clicked()
 
      {
 
      //video
 
 
 
      // display video in same window
 
      Phonon::MediaObject *mediaObject = new Phonon::MediaObject(this);
 
 
 
      // Phonon::VideoPlayer *myPlayer= new Phonon::VideoPlayer(Phonon::VideoCategory, this);
 
      Phonon::VideoWidget *videoWidget = new Phonon::VideoWidget(this);
 
      Phonon::createPath(mediaObject, videoWidget);
 
      ui->verticalLayout->addWidget(videoWidget);
 
 
 
      Phonon::AudioOutput *audioOutput =
 
      new Phonon::AudioOutput(Phonon::VideoCategory, this);
 
      Phonon::createPath(mediaObject, audioOutput);
 
      QString urlVideo ="TV.mp4";
 
      Phonon::MediaSource source = Phonon::MediaSource(urlVideo);
 
      mediaObject->setCurrentSource(source);
 
 
 
      Phonon::SeekSlider *slider = new Phonon::SeekSlider;
 
      slider->setMediaObject(mediaObject);
 
      ui->horizontalLayout_2->addWidget(slider);
 
      slider->show();
 
 
 
      mediaObject->play();
 
      }

void HelloMeego::on_pushButton_4_clicked()
   
      {
  
      //video
   
       
   
      // display video in same window
   
      Phonon::MediaObject *mediaObject = new Phonon::MediaObject(this);
   
       
   
      // Phonon::VideoPlayer *myPlayer= new Phonon::VideoPlayer(Phonon::VideoCategory, this);
   
      Phonon::VideoWidget *videoWidget = new Phonon::VideoWidget(this);
  
      Phonon::createPath(mediaObject, videoWidget);
  
      ui->verticalLayout->addWidget(videoWidget);
  
       
  
      Phonon::AudioOutput *audioOutput =
  
      new Phonon::AudioOutput(Phonon::VideoCategory, this);
  
      Phonon::createPath(mediaObject, audioOutput);
  
      QString urlVideo ="TV.mp4";
  
      Phonon::MediaSource source = Phonon::MediaSource(urlVideo);
  
      mediaObject->setCurrentSource(source);
  
       
  
      Phonon::SeekSlider *slider = new Phonon::SeekSlider;
  
      slider->setMediaObject(mediaObject);
  
      ui->horizontalLayout_2->addWidget(slider);
  
      slider->show();
  
       
  
      mediaObject->play();
  
      }

To copy to clipboard, switch view to plain text mode 

and its running on Linux
1. how to check the backend capabilities. Are you talking about the media file support by phonon?this I have this
("application/vnd.ms-wpl", "application/x-mplayer2", "application/x-ms-wmd", "application/x-ms-wmz", "audio/aiff", "audio/basic", "audio/mid", "audio/midi", "audio/mp3", "audio/mpeg", "audio/mpegurl", "audio/mpg", "audio/wav", "audio/x-aiff", "audio/x-mid", "audio/x-midi", "audio/x-mp3", "audio/x-mpeg", "audio/x-mpegurl", "audio/x-mpg", "audio/x-ms-wax", "audio/x-ms-wma", "audio/x-wav", "midi/mid", "unknown", "video/avi", "video/mpeg", "video/mpg", "video/msvideo", "video/x-mpeg", "video/x-mpeg2a", "video/x-ms-asf", "video/x-ms-asf-plugin", "video/x-ms-wm", "video/x-ms-wmv", "video/x-ms-wmx", "video/x-ms-wvx", "video/x-msvideo")
2. what is DS backend ?

[v-6]

Hi,
i have the same kind of issue, i can play mp4 but not flv.

[somnathbanik]

Hi,
i have the same kind of issue, i can play mp4 but not flv.

It seems to a problem with the codex, you can try running the app on linux or even try to install a codec pack like K-Lite (for me it didn't work)

[v-6]

It seems to a problem with the codex, you can try running the app on linux or even try to install a codec pack like K-Lite (for me it didn't work)

Yes I installed K-Lite and it worked for me. thank you.

[Talei]

If that is the case then my app should play mp4 files, cause I am running the app on Windows7 and the default WMP can play the mp4 file but not my app can play the same mp4 file. Could you please put some llight on it.

Sorry for late reply. I miss this thread by accident.
You can play MP4 files in WMP and not in Phonon because You are probably using ffdshow base codec/pack. K-Lite use DS codecs that are supported by Phonon. It's in doc.

[asmncl]

how did u played mp4 file