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swf::videostream

.::SWF::VideoStream(3pm)				User Contributed Perl Documentation				  .::SWF::VideoStream(3pm)

NAME

       SWF::VideoStream - SWF Video class

SYNOPSIS

	       use SWF::VideoStream;
	       $videostream = new SWF::VideoStream("test.flv");

DESCRIPTION

       SWF::VideoStream is a helper class useful for playing videos via SWF applications, either via embedded video data, or controlled by
       ActionScript.

METHODS

       $videostream = new SWF::VideoStream($filename)
	   Creates a SWF::VideoStream object. If the file can't be opened the constructor will return an empty object. The filename is not limited
	   to 'flv' extension.

       $frames = $videostream->getNumFrames()
	   This method returns the number of video-frames of an object of SWF::VideoStream, this works only for embedded streams. In case of error
	   you will get result of -1.

       $videostream->setDimension(width, height)
	   This method sets width and height for streamed videos, this works only on streamed videos (progressive download or rtmp).

       $bool = $videostream->hasAudio()
	   A test whether the embedded FLV stream also has audio data.

       $videostream->setFrameMode($mode)
	   If the mode == SWFVIDEOSTREAM_MODE_AUTO (default) on every SWF movie frame a video frame is added. In SWFVIDEOSTREAM_MODE_MANUAL mode,
	   the user needs to call the nextFrame() method to change the video's frame. This works only with embedded video streams.  Does return
	   the previous mode or -1 if an invalid mode was passed.

       $result = $videostream->nextFrame()
	   Switch to next video frame. Works only with embedded video streams. Returns -1 if an error happend.	Here follows some demo code how to
	   use SWF::VideoStream objects (without ActionScript):

		   use SWF qw(:ALL);			   # to be lazy
		   $movie = new SWF::Movie();
		   $movie->setRate( 25 );
		   # $movie->setRate( 5 );		   # e.g. 5 for slow motion
		   # here movie set background etc. etc.
		   #
		   $video=new SWF::VideoStream('MyTestVideo.flv');
		   die if (-1 == $v->getNumFrames());	   # abort if something went wrong
		   #
		   $video->setFrameMode(SWF::Constants::SWFVIDEOSTREAM_MODE_MANUAL);
		   $video->seek(1000, 0);		   # for example only
		   $displayitem = $movie->add($video);
		   #
		   # 250 for a 10 seconds movie part (at rate of 25 per minute)
		   for(my $n = 0; $n < 250; ++$n)
		   {
		    $video->nextFrame();
		    $movie->nextFrame();
		   }
		   $movie->save("MyTestVideo.swf",9);
		   # that's all, folks

       $result = $videostream->seek($frame, $whence)
	   This functions allows seeking $frame in video stream, returning the old video frame position.  As value of $whence use one of the
	   following:

		   0 for seeking from beginning
		   1 for seeking from current position
		   2 for seeking from end of file

AUTHOR

	       developers of ming
	       ming.sourceforge.net

SEE ALSO

       SWF, SWF::Action, SWF::Movie, SWF::MovieClip, SWF::Sound, SWF::SoundStream, SWF::Constants

perl v5.14.2							    2011-10-26						  .::SWF::VideoStream(3pm)

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