Julius, QTMovieLayer is your friend. If you haven't already, check out the Core Animation QuickTime Layer sample code. I think you'll find it very helpful.
regards, douglas On Aug 4, 2011, at 3:13 PM, julius wrote: > Hi, > I've been looking for a way to draw on top of a QT movie whose display > dimensions the user can vary using the window's resize handle(?) while it is > running. > > I have previously stepped through the individual frames but the result was > jerky. > I obtained a smoother result by first converting the movie into an image > sequence but the time required to perform the convertion and memory use are > unacceptable. > > The most promising suggestion I've found so far is the (undocumented) > delegate method in QTMovieView.h > - (CIImage *)view:(QTMovieView *)view willDisplayImage:(CIImage *)image > > Some discussions on various forums circa 2008, suggest the method had been > used successfully in the past but it's not worked for me. > XCode seems not to recognise it. > > Is the method no longer extant? > Should I look to try another approach e.g. Core Video? > I use XCode 3.2.6 > > Julius > > http://juliuspaintings.co.uk > > > > _______________________________________________ > > Cocoa-dev mailing list ([email protected]) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/douglas_welton%40earthlink.net > > This email sent to [email protected] _______________________________________________ Cocoa-dev mailing list ([email protected]) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [email protected]
