ReadFrames

Hi,
I'd like to extract all the frames of a clip, convert them
to an intermediate format and store them in an array for
processing.  I'm currently using ReadFrame:

//for each frame in stream do:
avm::CImage* frame = aviStream->ReadFrame(true); //Read
frame
avm::BitmapInfo *hdr = new
avm::BitmapInfo(frame->Width(),frame->Height(),24) //
convert bmp to "header format"
avm::CImage* bmp= new CImage(frame, hdr); // make bmp
Glib::RefPtr<Gdk::Pixbuf> pixbufframe =
Gdk::Pixbuf::create_from_data(bmp->Data(),
Gdk::COLORSPACE_RGB, FALSE, 8, bmp->Width(), bmp->Height(),
bmp->Stride()); //make pixbuf	
//store pointer in array

Is it better to use ReadFrames though?  How do I determine
the size of memory to allocate to the buffer, and how do I
access individual frames then?

Thanks,
Johan
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