The QTPlgMediaVideo class defines a that describes image or video frame sample data. This class inplements properties and methods that allows you to deal with characteristics peculiar to image or video frame samples.
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The QTPlgMediaVideo class constructors are called when you create a new instance of the class, while the ˜QTPlgMediaVideo class destructor, is called automatically when the class is no more in use. Also, you can invoke the class destructor by setting the instance of the class to nil. You can not create a QTPlgMediaVideo object by yourself; instead, you will use class instances obtained from objects of appropriate type.
Once a new class instance is returned, it is good practice to check the class property to be sure that the new object can be used. See the validity requirements for more details.
The class provides you with the following initializer methods:
(other as QTPlgMediaVideo)
This is the copy constructor. The properties of the object to be copied will be used to initialize the
new class instance properties
specifies if the track is an MPEG track
specifies the average frame rate during playback. Because of sampling errors, to obtain accurate results, you should query
this property at intervals of one second at least and after an initial call to the
class method.
Because not all QuickTime movies have a constant frame rate,
the values returned by this property can be difficult to interpret correctly. For this reason, the results of this function
should not be displayed in a place where a novice user is likely to see it
specifies the static video frame rate
provides detailed informations about the stored image sample data
provides detailed informations about the stored image sample data; returns a list of
objects
()
use this method to reset the video media handler’s counters before using
to determine the
frame rate of a