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processing:video_capture

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processing:video_capture [2013/05/23 04:03] – [Capture is a PImage] mithatprocessing:video_capture [2013/08/04 03:53] – mithat
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 ====== Video capture examples ====== ====== Video capture examples ======
  
-Examples below have been adapted from the [[http://www.processing.org/reference/libraries/video/Capture.html|Processing 2.0 library reference]] and from examples at [[http://www.learningprocessing.com/|Learning Processing]].+The examples below are based on documentation and code from the [[http://www.processing.org/reference/libraries/video/Capture.html|Processing 2.0 library reference]] and at [[http://www.learningprocessing.com/|Learning Processing]].
  
 ===== List available capture devices ===== ===== List available capture devices =====
-The following sketch will print out a list of available capture devices to the console. You'll need at least one entry to do video capture. On Linux (the only platform I tested) different resolutions show up as different devices.+You'll need at least one available device to do video capture. The following sketch will print out a list of available capture devices to the console. On Linux (the only platform I tested) different resolutions show up as different devices.
  
 <file java list_capture_devices.pde> <file java list_capture_devices.pde>
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 ===== Show video ===== ===== Show video =====
 +There are two ways you can set up video capture: by requesting capture parameters or specifying the device.
 +
 ==== By requesting capture parameters ==== ==== By requesting capture parameters ====
 <file java show_capture_by_parameters.pde> <file java show_capture_by_parameters.pde>
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 ==== By specifying device ==== ==== By specifying device ====
-Note that Processing will crop the capture to the canvas size if it doesn't fit.+Processing will crop the capture to the canvas size if it doesn't fit.
  
 <file java show_capture_by_devnum.pde> <file java show_capture_by_devnum.pde>
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 </file> </file>
  
-<WRAP center round info 80%>+ 
 +<WRAP center round tip 80%>
 ===== Capture is a PImage ===== ===== Capture is a PImage =====
  
-Something the [[http://processing.org/reference/libraries/video/Capture.html|documentation]] on the ''Capture'' class doesn’t mention is that ''Capture'' is derived from ''[[http://processing.org/reference/PImage.html|PImage]]''. You need to dig into the ''Capture'' source code to figure that out:+Something the [[http://processing.org/reference/libraries/video/Capture.html|documentation]] on the Capture class doesn’t mention is that Capture is derived from [[http://processing.org/reference/PImage.html|PImage]]. This is the key to manipulating Capture output. You need to dig into the Capture source code to figure that out:
  
 <code java>public class Capture extends PImage implements PConstants { ...</code> <code java>public class Capture extends PImage implements PConstants { ...</code>
  
-This means all the methods and fields available to ''PImage'' objects should also be available to ''Capture'' objects. This is the key to manipulating ''Capture'' output.+This means all the methods and fields available to PImage objects should also be available to Capture objects.
 </WRAP> </WRAP>
  
processing/video_capture.txt · Last modified: 2013/08/23 04:10 by mithat
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