HTML filters - Accessing Shotcut properties

eurekasfray · March 26, 2019, 10:34pm

Is there a way to access Shotcut properties so that we can display them on-screen in an HTML overlay? For example: accessing the current position of the timeline (in seconds for example) and displaying the value on-screen using HTML/JavaScript. I think this may be possible, since one of the filters that comes with Shotcut called Simple Screen can access the duration of a clip using webvfx.getNumberParameter('duration'), but I don’t know how it does so beneath that line.

So does Shotcut have ways to access its properties?

Can we access properties like

clip name
clip duration
timeline current position
timeline duration

Thanks

shotcut · March 28, 2019, 5:23am

You cannot access those properties. WebVfx can access properties that have been set by some UI that sets properties. duration is special because the general webvfx/ui.qml sets it from the Shotcut QML filter object. Other possible things it could access are listed as Q_PROPERTY here:

github.com

mltframework/shotcut/blob/master/src/qmltypes/qmlfilter.h#L38


#include <MltAnimation.h>


#include "qmlmetadata.h"
#include "shotcut_mlt_properties.h"


class AbstractJob;


class QmlFilter : public QObject
{
Q_OBJECT
Q_PROPERTY(bool isNew READ isNew)
Q_PROPERTY(QString path READ path)
Q_PROPERTY(QStringList presets READ presets NOTIFY presetsChanged)
Q_PROPERTY(int in READ in WRITE setIn NOTIFY inChanged)
Q_PROPERTY(int out READ out WRITE setOut NOTIFY outChanged)
Q_PROPERTY(int animateIn READ animateIn WRITE setAnimateIn NOTIFY animateInChanged)
Q_PROPERTY(int animateOut READ animateOut WRITE setAnimateOut NOTIFY animateOutChanged)
Q_PROPERTY(int duration READ duration NOTIFY durationChanged)
Q_PROPERTY(bool blockSignals WRITE blockSignals)


public:

eurekasfray · March 29, 2019, 4:00am

Thank man. I’m gonna check this out and see what I can accomplish.

system · June 24, 2019, 10:34pm

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