I am finally able to build the package. I was wondering why rosbuild doesn't work but build actually allows me to compile the codes. Also, after running the launch file, i do not see the video on my screen. My webcam is activated though. Here is errors from i get after using the launch file.

started roslaunch server http://ubuntu:51743/

SUMMARY

PARAMETERS * /uvc_camera/device * /rosdistro * /uvc_camera/fps * /uvc_camera/height * /uvc_camera/camera_info_url * /uvc_camera/frame * /rosversion * /uvc_camera/width

NODES / uvc_camera (uvc_camera/camera_node)

auto-starting new master process[master]: started with pid [3224] ROS_MASTER_URI=http://localhost:11311

setting /run_id to e3b85c52-7962-11e1-b7f2-00269e97ef00 process[rosout-1]: started with pid [3237] started core service [/rosout] process[uvc_camera-2]: started with pid [3245] [rospack] opendir error [No such file or directory] while crawling /home/sinjon/ros_workspace

[rospack] opendir error [No such file or directory] while crawling /home/sinjonros_workspace

opening /dev/video0 pixfmt 0 = 'YUYV' desc = 'YUV 4:2:2 (YUYV)' discrete: 640x480: 1/24 discrete: 352x288: 1/24 discrete: 320x240: 1/24 discrete: 176x144: 1/24 discrete: 160x120: 1/24 int (Brightness, 0, id = 980900): 0 to 127 (1) int (Contrast, 0, id = 980901): 0 to 127 (1) int (Saturation, 0, id = 980902): 0 to 127 (1) int (Hue, 0, id = 980903): -180 to 180 (1) bool (White Balance Temperature, Auto, 0, id = 98090c): 0 to 1 (1) int (Gamma, 0, id = 980910): 1 to 500 (1) menu (Power Line Frequency, 0, id = 980918): 0 to 2 (1) 0: Disabled 1: 50 Hz 2: 60 Hz int (White Balance Temperature, 0, id = 98091a): 2800 to 6500 (1) int (Sharpness, 0, id = 98091b): 0 to 127 (1) int (Backlight Compensation, 0, id = 98091c): 0 to 2 (1) bool (Exposure, Auto Priority, 0, id = 9a0903): 0 to 1 (1) current value of 10094851 is 1 unable to set control: Invalid argument ERROR: could not set some settings.
unable to set control