In the sample, the user can select an image filter in the composition picker to generate videos with special effects. The supplied composition grabs the input video and output a sequence of images. The images are then processed with an image filter selected by the user to produce video with special effects. A QCCompositionPickerPanel is used to provide the image filters for the user to select. When a filter is selected, the application will receive a notification and it will pass the selected filter identifier as the new input parameter for the composition in the QCView. This filter is then applied to process the images.
This sample requires OS X 10.4 or higher.