how to display video window using QML

[xiaojun789]

hi all,
I want to implement a video player application. and the UI part I want to use QML, and play core using the Qt mobility. but there is a question for me , how to output the the video window to QML UI part. Thanks in advance for your kindly reply....

[gnuton]

Have you taken a look at http://doc.qt.nokia.com/qtmobility-1.2/qml-video.html?

[xiaojun789]

Thanks~!,
yes,I know QML provide the video element for video playing.but it can't run successfully on N900. I wan't using mobility to play the video, but how to show the video window using QML is big problem for me

[gaba88]

hello xiaojun789

i am still not clear by your problem to show video window, if you can get some more illustration than that will be cool.

BTW try reading this wiki article http://www.developer.nokia.com/Commu..._player_in_QML about using Video Element in QML.

[xiaojun789]

hi gaba88,
I want to implement a video player, like you give me the link shows. but there is some different with that one. I want to use QtMobiliyty multimedia tool to play the video(using QMediaPlayer).
my problem is how to show the video played by QMediaPlayer?

[gaba88]

ok i think i understood your problem.

I guess you have all rest UI things with QML and you want to simple implement the video player using QtMobility QMediaPlayer class. For this you can have couple of options:

1. You can simple call a c++ function from your QML code in which you will we showing your widget which has the video player.
2. using QtMobility classes you can write your own QML plugin and use that in your QML files.

[xiaojun789]

hi gaba88,
Thanks. Can you give some example Code for the option 1???
BRs

[gaba88]

please have a look this Qt Doc link http://doc.qt.nokia.com/4.7/qtbinding.html.

But simple you need to expose your Qt C++ object to QML files using QDeclarativeContext::SetContextProperty and then you can call a function of that class using same object.

Please read the doc and then try what i told you.

[xiaojun789]

hi
I implement a widget and expose to the QML, the QML can call the widget the function and proporty. but how to show the widget in the QML layout?
Thanks~!

[gaba88]

did you try calling yourwidget->show() in the function which are you calling from the QML code??

[xiaojun789]

yes, I have already try, and when I call the show function, the widget will show as a windows. you know as we don't set the parent to the widget. I also set the widget's parent to QDecllarativeView, the widget will show in the QML view, but we can't manual layout this widget. do you have any good idea?? Thanks a lot......

[csu_nj]

I use qml video, but get the info defaultServiceProvider::requestService(): no service found for - "com.nokia.qt.mediaplayer")

[xiaojun789]

I use this in Maemo develop environment or Ubuntu. if I use the QtSDK directly, also has that problem..

I use qml video, but get the info defaultServiceProvider::requestService(): no service found for - "com.nokia.qt.mediaplayer")

[csu_nj]

thanks.now I try it in nokia n97mini, using the example,http://www.developer.nokia.com/Commu..._player_in_QML,but only audio, no pictures Displayed. and I get the debug info:
[Qt Message] Play Button Clicked
[Qt Message] QGraphicsVideoItem:aint
[Qt Message] set video display rect: QRect(0,42 360x528)
------ Statistics of Post Processor ------
Pictures Received : 0
Pictures Displayed: 0
Pictures Skipped : 0
------------------------------------------
[Qt Message] QGraphicsVideoItem:aint
[Qt Message] set video display rect: QRect(0,186 360x240)

[gaba88]

hello csu_nj

just checked the code in my E7. as i dont use a N97 Mini Now ;-( and it worked good there was no problem like that which you have mentioned.