extractframes.m

Video IO toolbox for matlab. 用directshow做的

% Script to create the frames/ subdirectory.  The data in that directory is
% used to test the 'load' and 'imread' plugins.
%
% Normal users will likely have no need to directly call this function.

N = 100;

if ~exist('frames','dir') || length(dir('frames')) < N
  ienter;
  mkdir('frames');
  for i=0:N-1,
    frame = genTestFrame(320,240,i,N);
    imwrite(frame, sprintf('frames/numbers.%04d.png', i));
    save(sprintf('frames/numbers.%04d.mat', i), 'frame');
  end
  iexit;
end