How do I save captured video to an avi like imaqtool does?

I'm using the Image Acquisition Toolbox (imaqtool) to capture video from my Pike camera. In imaqtool I'm able to push a button to acquire video and then another button to save the video to an avi file. The imaqtool session log says that this is the code used:

vid = videoinput('gentl', 1, 'RGB8Packed');
src = getselectedsource(vid);
vid.FramesPerTrigger = 100;
preview(vid);
start(vid);
stoppreview(vid);
diskLogger = VideoWriter('C:\MATLAB\vidx.avi', 'Uncompressed AVI');
open(diskLogger);
data = getdata(vid, vid.FramesAvaialble);
numFrames = size(data, 4);
for ii = 1:numFrames
    writeVideo(diskLogger, data(:,:,:,ii));
end
close(diskLogger);

However, when I copy this code to a script and run it I get this error:

Warning: No video frames were written to this file. The file may be invalid. 
> In VideoWriter.VideoWriter>VideoWriter.close at 289
  In VideoWriter.VideoWriter>VideoWriter.delete at 238
  In camera at 14 
Error using imaqdevice/subsref (line 31)
Invalid property: 'FramesAvaialble'.
Type 'imaqhelp' for information.

Error in camera (line 16)
data = getdata(vid, vid.FramesAvaialble);

What am I doing wrong? Please help /Chris

Answer 1

[Youssef Khmou]

Hi

1)you have an error in your code : you wrote "FramesAvaialble", it is "FramesAvailable" . correct that and try again .

2)After you get the data which is NxPx100 according your code, you can try "avifile" :

 mov = avifile('example.avi')
 for x=1:100
   mov = addframe(mov,data(:,:,x));
 end

try

 doc avifile

[Chris]

Thanks, correcting the spelling error fixed it.

My code was copypasted from the session log of imaqtool, so the spelling error was generated by the toolbox itself... bug report?

[Youssef Khmou]

hi,i am glad it works now, maybe a bug report, if you found it you can email them to rectify .