EVP Toolbox

 video_open_w - open video for writing
 
Calling Sequence
	handle = video_open_w( filename, bit_rate, width, height, frame_rate );
	
Parameters
	* filename : A string, the video filename to be open for write. The extension determines the type of the video.
	* bit_rate, width, height, frame_rate : specify the paparmeter of the video

Description
	We use FFmpeg. FFmpeg is a complete solution to record, convert and stream audio and video. It includes libavcodec, the leading audio/video codec library. FFmpeg is a charming library. Now we can write almost all type of video file under both Linux and windows. For more information, go to  http://ffmpeg.mplayerhq.hu/
	
Examples
	Here is a example for converting video format:
	in = video_open( 'ww.mpg');
	out = video_open_w ('out.swf', 400000, 352, 288, 25);
	[frame, num ] = video_info(in)

	for i=1:num
	 im = video_read_frame(in);
	 video_write_frame( im, out );
	end
	
	video_close_w( out );
	video_close(in);