Record a movie
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From: Oriane Le Pocher on 11 Aug 2010 10:28 I've just had a flash of inspiration. It's because of the stepsize, isn't it ? Because I calculate A(i) only every stepzize there is a lot of "uninitialized frames.
From: Steven_Lord on 11 Aug 2010 13:46 "Oriane Le Pocher" <cixi(a)yopmail.com> wrote in message news:i3uc1m$86k$1(a)fred.mathworks.com... > I've just had a flash of inspiration. It's because of the stepsize, isn't > it ? > Because I calculate A(i) only every stepzize there is a lot of > "uninitialized frames. Exactly. If you store frames in A(1), A(1+stepsize), A(1+2*stepsize), etc. and stepsize > 1, you have uninitialized frames. -- Steve Lord slord(a)mathworks.com comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ To contact Technical Support use the Contact Us link on http://www.mathworks.com
From: Oriane Le Pocher on 12 Aug 2010 04:54 "Steven_Lord" <slord(a)mathworks.com> wrote in message <i3unl5$gcj$1(a)fred.mathworks.com>... > > > "Oriane Le Pocher" <cixi(a)yopmail.com> wrote in message > news:i3uc1m$86k$1(a)fred.mathworks.com... > > I've just had a flash of inspiration. It's because of the stepsize, isn't > > it ? > > Because I calculate A(i) only every stepzize there is a lot of > > "uninitialized frames. > > Exactly. If you store frames in A(1), A(1+stepsize), A(1+2*stepsize), etc. > and stepsize > 1, you have uninitialized frames. > > -- > Steve Lord > slord(a)mathworks.com > comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ > To contact Technical Support use the Contact Us link on > http://www.mathworks.com Hello, Thank you for your answer. Yesterday I thougth that I've solved my problem but now I have another problem... I've changed my code and instead of A(i)=getframe I've added another variable j. I've initialized j=1; and then in the loop I have A(j)=getframe; j=j+1; The problem is that now when I want to see my movie with the command movie(A), first I see the movie with the normal speed and then I see it with a slower speed. My questions are: Why is the movie played twice ? And why is it played slowly the second time ?
From: Steven_Lord on 12 Aug 2010 11:01 "Oriane Le Pocher" <cixi(a)yopmail.com> wrote in message news:i40crt$99g$1(a)fred.mathworks.com... > "Steven_Lord" <slord(a)mathworks.com> wrote in message > <i3unl5$gcj$1(a)fred.mathworks.com>... *snip* > Hello, Thank you for your answer. > Yesterday I thougth that I've solved my problem but now I have another > problem... > > I've changed my code and instead of A(i)=getframe I've added another > variable j. I've initialized j=1; and then in the loop I have > A(j)=getframe; j=j+1; > > The problem is that now when I want to see my movie with the command > movie(A), first I see the movie with the normal speed and then I see it > with a slower speed. My questions are: Why is the movie played twice ? And > why is it played slowly the second time ? http://www.mathworks.com/support/solutions/en/data/1-16FM0/?solution=1-16FM0 -- Steve Lord slord(a)mathworks.com comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ To contact Technical Support use the Contact Us link on http://www.mathworks.com
From: Oriane Le Pocher on 12 Aug 2010 11:07
"Steven_Lord" <slord(a)mathworks.com> wrote in message <i412c6$5ri$1(a)fred.mathworks.com>... > > > "Oriane Le Pocher" <cixi(a)yopmail.com> wrote in message > news:i40crt$99g$1(a)fred.mathworks.com... > > "Steven_Lord" <slord(a)mathworks.com> wrote in message > > <i3unl5$gcj$1(a)fred.mathworks.com>... > > *snip* > > > Hello, Thank you for your answer. > > Yesterday I thougth that I've solved my problem but now I have another > > problem... > > > > I've changed my code and instead of A(i)=getframe I've added another > > variable j. I've initialized j=1; and then in the loop I have > > A(j)=getframe; j=j+1; > > > > The problem is that now when I want to see my movie with the command > > movie(A), first I see the movie with the normal speed and then I see it > > with a slower speed. My questions are: Why is the movie played twice ? And > > why is it played slowly the second time ? > > http://www.mathworks.com/support/solutions/en/data/1-16FM0/?solution=1-16FM0 > > -- > Steve Lord > slord(a)mathworks.com > comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ > To contact Technical Support use the Contact Us link on > http://www.mathworks.com Thank you ! |