WordPress custom permalink for custom post type

I have 2 custom post types photos and videos
I have 3 pages news, photos, videos
In news page the posts are displayed with this permalink structure

/news/%category%/%postname%

Now for photos and videos I need some permalink structure like this

/photos/%category%/%postname%
/videos/%category%/%postname%

Finally some permalink structure like the following will work for me I guess

/%posttype%/%category%/%postname%

Is there any good solution for this problem?