Re: view:(QTMovieView *)view willDisplayImage:
Re: view:(QTMovieView *)view willDisplayImage:
- Subject: Re: view:(QTMovieView *)view willDisplayImage:
- From: douglas welton <email@hidden>
- Date: Fri, 05 Aug 2011 11:04:28 -0400
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
>
>
>
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