how to change the frame rate of camera

[imharish63]

while transmitting over network , i could see the frame rate is 109. but when the following command is used: v4l2-ctl -L i am not able to set the frame rate as i can't see any option. check the parameters below:

User Controls

                 brightness 0x00980900 (int)    : min=0 max=63 step=1 default=0 value=0 flags=slider
                 saturation 0x00980902 (int)    : min=0 max=200 step=1 default=100 value=100 flags=slider
                        hue 0x00980903 (int)    : min=-4000 max=4000 step=1 default=0 value=0 flags=slider
         auto_white_balance 0x0098090c (bool)   : default=0 value=0
              white_balance 0x0098090d (button) : flags=write-only, execute-on-write
                red_balance 0x0098090e (int)    : min=0 max=8000 step=1 default=1930 value=1930 flags=slider
               blue_balance 0x0098090f (int)    : min=0 max=8000 step=1 default=1500 value=1500 flags=slider
                      gamma 0x00980910 (int)    : min=40 max=240 step=5 default=100 value=100 flags=slider
                   exposure 0x00980911 (int)    : min=63912 max=2147483647 step=15 default=5000000 value=5000007 flags=slider
                  auto_gain 0x00980912 (bool)   : default=0 value=0
                       gain 0x00980913 (int)    : min=0 max=1138 step=10 default=0 value=0 flags=slider
                  reverse_x 0x00980914 (bool)   : default=0 value=0
                  reverse_y 0x00980915 (bool)   : default=0 value=0
      frame_timeout_enabled 0x009809c8 (bool)   : default=1 value=1
              frame_timeout 0x009809c9 (int)    : min=100 max=12000 step=1 default=12000 value=12000
   stride_alignment_enabled 0x009809ca (bool)   : default=1 value=1
     crop_alignment_enabled 0x009809cb (bool)   : default=1 value=1

Camera Controls

              exposure_auto 0x009a0901 (menu)   : min=0 max=1 default=1 value=1
            0: Auto Mode
            1: Manual Mode
          exposure_absolute 0x009a0902 (int64)  : min=1 max=100000 step=1 default=1 value=50
          exposure_auto_min 0x009a0928 (int)    : min=63912 max=2147483647 step=15 default=63912 value=63912 flags=slider
          exposure_auto_max 0x009a0929 (int)    : min=63912 max=2147483647 step=15 default=2147483647 value=2147483647 flags=slider
              auto_gain_min 0x009a092a (int)    : min=0 max=1138 step=10 default=0 value=0 flags=slider
              auto_gain_max 0x009a092b (int)    : min=0 max=1138 step=10 default=1138 value=1138 flags=slider
                bypass_mode 0x009a2064 (intmenu): min=0 max=1 default=0 value=0
            0: 0 (0x0)
            1: 1 (0x1)
            override_enable 0x009a2065 (intmenu): min=0 max=1 default=0 value=0
            0: 0 (0x0)
            1: 1 (0x1)
               height_align 0x009a2066 (int)    : min=1 max=16 step=1 default=1 value=1
                 size_align 0x009a2067 (intmenu): min=0 max=2 default=0 value=0
            0: 1 (0x1)
            1: 65536 (0x10000)
            2: 131072 (0x20000)
           write_isp_format 0x009a2068 (bool)   : default=0 value=0
   sensor_signal_properties 0x009a2069 (u32)    : min=0 max=4294967295 step=1 default=0 [30][18] flags=read-only, has-payload
    sensor_image_properties 0x009a206a (u32)    : min=0 max=4294967295 step=1 default=0 [30][16] flags=read-only, has-payload
  sensor_control_properties 0x009a206b (u32)    : min=0 max=4294967295 step=1 default=0 [30][36] flags=read-only, has-payload
          sensor_dv_timings 0x009a206c (u32)    : min=0 max=4294967295 step=1 default=0 [30][16] flags=read-only, has-payload
           low_latency_mode 0x009a206d (bool)   : default=0 value=0
           preferred_stride 0x009a206e (int)    : min=0 max=65535 step=1 default=0 value=0
               sensor_modes 0x009a2082 (int)    : min=0 max=30 step=1 default=30 value=1 flags=read-only

[arunprakash-avt]

For setting the FPS using V4L2-CTL use the below command v4l2-ctl --set-parm=50 But this will not work if the exposure time is to high. For example, in order to have 50fps, then the exposure time has to be lower than 1/50 = 20ms.

[imharish63]

Does the change is reflected in any parameter. so that i can monitor for example. that the systems is now 50 fps.