I make screen shot with iphone camera use the UIGetScreenImage()method, I want to make this images sequence to video, but the memory is limited , i think write the image data to documents maybe a good choice for me. so when capture the image use UIGetSreenImage(), start a new thread to write the image data to documents, but this will delay the thread which used to capture image.
I don't know how to deal with this issues, Would you give me some advises? any reply will appreciate.