How to transfer photos and videos from mac to iphone 4s?

I would like to know how to put/transfer photos and videos from my mac to my iPhone 4s only to camera roll, can anyone please tell me how to do it without a jailbroken phone. I would really appreciate it.

Maybe you can try to sync your photos and videos to iphone by iTunes. When connect your iphone to Mac by USB cable and open iTunes, you can click "Video" or "photo" to import your local file to iTunes, then click "sync" to do transferring. You can get more details by:

http://www.squidoo.com/...-to-iphone