Ok. Reducing resolution and fps.
320 x 240 pixels x 5fps x 1 (no storage) = 384KB
Too much for microcontroller internal RAM. Anyway, it will be a stream with 384KB/s data rate. Impossible again.
You can easily use your camera for taking single photos because it producing normal JPEG compressed images. Then just store them to SD card. Possible, you will can make 2-3 photo per second depends the card speed. Think about it. Video stream is a very difficult task.