I am creating a movie file using QTMovie from QTKit and everything's working nicely. The only problem I have is that the audio in the resulting MOV file is just the raw AIFF hence the file size is larger than I'd like. I've seen plenty about third party libraries capable of encoding to AAC but are there any Apple APIs which I can call to do this job? I don't mind converting the AIFF to AAC prior to adding it to my QTMovie or having the encoding done as part of writing the QTMovie to disk.
This was actually easily achievable using QTKit. I just needed to set the QTMovieExportType to 'mpg4' and QTMovieExport to be YES when calling writeToFile:withAttributes:.