Metadata-Version: 1.1
Name: vpl
Version: 0.0.3
Summary: Video Pipe Line
Home-page: https://github.com/chemicaldevelopment/vpl
Author: Cade Brown
Author-email: cade@chemicaldevelopment.us
License: GPLv3
Description-Content-Type: UNKNOWN
Description: # vpl
        
        Vide Pipe Line
        
        
        # installation
        
        Run `pip3 install vpl` (it's on pypi)
        
        Or `pip3 install -e git://github.com/chemicaldevelopment/vpl` (for development, i.e. unstable builds)
        
        # usage
        
        It comes with a simple viewer, run:
        
        `python3 -mvpl --help`
        
        You can use `import vpl` in your code
        
        # exposure settings
        
        Exposure settings are extremely finicky to get working. Here's a few commands to try:
        
        First, set the auto control cutoff to 1:
        
        `v4l2-ctl -d /dev/video0 -c exposure_auto=1`
        
        Then, try setting the exposure value to various values between -100 and +100:
        
        `v4l2-ctl -d /dev/video0 -c exposure_absolute=-30`
        
        `v4l2-ctl -d /dev/video0 -c exposure_absolute=0`
        
        `v4l2-ctl -d /dev/video0 -c exposure_absolute=0.5`
        
        `v4l2-ctl -d /dev/video0 -c exposure_absolute=20`
        
        The optimal low/medium light setting for the Micro$oft Lifecam is:
        
        `v4l2-ctl -d /dev/video0 -c exposure_absolute=20.9`
        
        
        Use this command:
        
        `v4l2-ctl --all`
        
        *to print settings (and their defaults). This is the most important v4l command*
        
        Run through setting all these to defaults
        
        
        Here are the defaults for Micro$oft Lifecam:
        
        ```
        
        Streaming Parameters Video Capture:
        	Capabilities     : timeperframe
        	Frames per second: 30.000 (30/1)
        	Read buffers     : 0
                             brightness (int)    : min=30 max=255 step=1 default=133 value=133
                               contrast (int)    : min=0 max=10 step=1 default=5 value=5
                             saturation (int)    : min=0 max=200 step=1 default=83 value=83
         white_balance_temperature_auto (bool)   : default=1 value=1
                   power_line_frequency (menu)   : min=0 max=2 default=2 value=2
              white_balance_temperature (int)    : min=2800 max=10000 step=1 default=4500 value=4500 flags=inactive
                              sharpness (int)    : min=0 max=50 step=1 default=25 value=25
                 backlight_compensation (int)    : min=0 max=10 step=1 default=0 value=5
                          exposure_auto (menu)   : min=0 max=3 default=1 value=1
                      exposure_absolute (int)    : min=5 max=20000 step=1 default=156 value=40
                           pan_absolute (int)    : min=-201600 max=201600 step=3600 default=0 value=0
                          tilt_absolute (int)    : min=-201600 max=201600 step=3600 default=0 value=0
                          zoom_absolute (int)    : min=0 max=10 step=1 default=0 value=0
        
        ```
        
        
        Use the script `utils/reset_lifecam.sh`
        
        
Keywords: video processing
Platform: UNKNOWN
Classifier: Topic :: Multimedia :: Video :: Conversion
