Tips! Kdenlive - A great video editor

I've just started to take a look on how to editing videos and was searching the net to find some tools for Linux.

After trying a couple I found out about the KDE application Kdenlive from some blog post and I must say that this tools looks very promising. It did crash once when I tried it out but I can live with that since I'm not a heavy user of video editing. I just need something for creating youtube videos occasionally.

In addition to the great app there's also a bunch of video tutorials here to help you getting started.

So if you're in the same position as me I think you should take a look at Kdenlive

PySide and QML

It has been out there for a while but I haven't had time to try it out, PySide 1.0 with QML support!

This really gives you a über rapid app development environment. The power of Python combined with the awesomeness of the declarative language QML from the Qt framework.

Take a look and feel free to play with the example below:

from PySide import QtCore
from PySide import QtGui
from PySide import QtDeclarative

class Message(QtDeclarative.QDeclarativeItem):

    messageChanged = QtCore.Signal()

    def __init__(self, parent = None):
        QtDeclarative.QDeclarativeItem.__init__(self, parent)
        self._msg = u''

    def getMessage(self):
        return self._msg

    def setMessage(self, value):
        if self._msg != value:
            print "Setting message property to", value
            self._msg = value
            self.messageChanged.emit()
        else:
            print "Message property already set to", value

    message = QtCore.Property(unicode, getMessage, setMessage, notify=messageChanged)


def main():
    app = QtGui.QApplication([])

    QtDeclarative.qmlRegisterType(Message, "utils", 1, 0, "Message")

    win = QtDeclarative.QDeclarativeView()
    win.setSource("main.qml")
    win.setWindowTitle("Hello World")
    win.setResizeMode(QtDeclarative.QDeclarativeView.SizeRootObjectToView)

    win.show()
    app.exec_()

if __name__ == "__main__":
    main()

import Qt 4.7 // or QtQuick 1.0 if applicable

import utils 1.0

Rectangle {
    id: main

    signal clicked

    color: "black"
    width: 360; height: 360

    Message {
        id: msg

        message: "Click Me!"
        onMessageChanged: label.font.pixelSize = 40
    }

    Text {
        id: label

        anchors.centerIn: parent

        text: msg.message
        color: "white"
        font.pixelSize: 25

 Behavior on font.pixelSize {
            NumberAnimation { duration: 800; easing.type: Easing.OutBounce }
        }

        MouseArea {
            anchors.fill: parent
            onClicked: msg.message = "Hello World"
        }
    }

}

For more information point your browser to http://www.pyside.org and download the package for your OS.

You'll also find useful information at http://developer.qt.nokia.com/wiki/Category:LanguageBindings::PySide

Happy hacking!

Guest blog post at Nokia Nordic Blog

I've been invited to write a guest blog post at Nokia Nordic blog. Please check it out if you're interested in Qt-development.

http://blogs.nokia.com/nordicblog/news/meet-mario-the-man-behind-the-qt-app-tvmatchen/#date=2011-02-01,mode=month