a141982112@linux-6jho:~/work/anshul/Project/ffmpeg-liveStreaming> ffprobe -f v4l2  -i /dev/video0 -list_formats all
ffprobe version 2.2.1 Copyright (c) 2007-2014 the FFmpeg developers
  built on Apr 19 2014 12:22:51 with gcc 4.7 (SUSE Linux)
  configuration: --enable-nonfree --enable-libfaac --enable-gpl --enable-libx264
  libavutil      52. 66.100 / 52. 66.100
  libavcodec     55. 52.102 / 55. 52.102
  libavformat    55. 33.100 / 55. 33.100
  libavdevice    55. 10.100 / 55. 10.100
  libavfilter     4.  2.100 /  4.  2.100
  libswscale      2.  5.102 /  2.  5.102
  libswresample   0. 18.100 /  0. 18.100
  libpostproc    52.  3.100 / 52.  3.100
[video4linux2,v4l2 @ 0xa4ca8e0] Raw       :   yuyv422 :     YUV 4:2:2 (YUYV) : 640x480 320x240 160x120 352x288 176x144 1280x1024
/dev/video0: Immediate exit requested

i want below info
ioctl: VIDIOC_ENUM_FMT
        Index       : 0
        Type        : Video Capture
        Pixel Format: 'YUYV'
        Name        : YUV 4:2:2 (YUYV)
                Size: Discrete 640x480
                        Interval: Discrete 0.056 s (18.000 fps)
                        Interval: Discrete 0.067 s (15.000 fps)
                        Interval: Discrete 0.100 s (10.000 fps)
                Size: Discrete 320x240
                        Interval: Discrete 0.033 s (30.000 fps)
                        Interval: Discrete 0.067 s (15.000 fps)
                        Interval: Discrete 0.100 s (10.000 fps)
                Size: Discrete 160x120
                        Interval: Discrete 0.033 s (30.000 fps)
                        Interval: Discrete 0.067 s (15.000 fps)
                        Interval: Discrete 0.100 s (10.000 fps)
                Size: Discrete 352x288
                        Interval: Discrete 0.033 s (30.000 fps)
                        Interval: Discrete 0.067 s (15.000 fps)
                        Interval: Discrete 0.100 s (10.000 fps)
                Size: Discrete 176x144
                        Interval: Discrete 0.033 s (30.000 fps)
                        Interval: Discrete 0.067 s (15.000 fps)
                        Interval: Discrete 0.100 s (10.000 fps)
                Size: Discrete 1280x1024
                        Interval: Discrete 0.133 s (7.500 fps)