IDLgrMPEG

Superclasses | Properties | Creation | Methods | Examples | Version History

An IDLgrMPEG object creates an MPEG movie file from an array of image frames.

Note
The MPEG standard does not allow movies with odd numbers of pixels to be created.

Note
MPEG support in IDL requires a special license. For more information, contact your ITT Visual Information Solutions sales representative or technical support.

Note
The IDLffMJPEG2000 object creates and reads Motion JPEG2000 (MJ2) files, and provides more functionality than the MPEG_* routines. Animations can consist of monochrome, RGB or multi-component frames that display individual components, tiles or regions. See Overview of Motion JPEG2000 (Using IDL) for more information.

Superclasses

IDLitComponent

Creation

See IDLgrMPEG::Init.

Properties

Objects of this class have the following properties. See IDLgrMPEG Properties for details on individual properties.

In addition, objects of this class inherit the properties of all superclasses of this class.

Methods

This class has the following methods:

In addition, this class inherits the methods of its superclasses (if any).

Examples

If you have a series of image objects (or simple image arrays), you can combine them into a single MPEG file using the IDLgrMPEG object.

PRO mpeg_example 
 
   loops = 4 
   increment = 32 
   pulseLength = 100 
   ;waitSeconds = .01 
 
   ; Put the .MPG file into the system's /TMP directory 
   filename = filepath('mpeg_example.mpg', /TMP) 
 
   myDevice = !D.NAME 
   SET_PLOT, 'z' 
   DEVICE, SET_RESOLUTION=[500,400] 
   mpegObj = OBJ_NEW('IDLgrMPEG') 
 
   FOR i = 0, increment*loops DO BEGIN 
      x = 2*!PI/pulseLength * INDGEN(100) + ( i MOD increment ) 
      PLOT, x, SIN(x), XRANGE=[0,increment], XSTYLE=1, $ 
         YRANGE=[-!PI/3, !PI/3] 
      mpegObj->Put, TVRD(/ORDER) 
      ;WAIT, waitSeconds 
   ENDFOR 
 
   mpegObj -> Save, FILENAME=filename 
   SET_PLOT, myDevice 
   PRINT, 'Done writing MPEG file ' + filename 
END 

Version History