在MatLAB中寫入視頻錯誤

Question

我有一些圖像覆蓋了一些軌道，然後變成了電影，但是我收到了這個錯誤（關於代碼最後的行）。

??? Undefined function or method 'writeVideo' for 
input arguments of type 'uint8'. 

的誤差在這段代碼的最後一行來：

% add this frame to movie file 
    %mov = addframe(mov,gcf); 
    renderer = get(hnd,'renderer'); 
    if strcmp(renderer,'painters') 
     renderer = 'opengl'; 
    end 
    set(hnd, 'Units', 'pixels'); 
    pixelsperinch = get(0,'screenpixelsperInch'); 

    frame = hardcopy(hnd, ['-d' renderer], ['-r' num2str(round(pixelsperinch))]); 
    writeVideo('mov',frame); %error appears here 

Answer 1

上Acoustic77的評論跟進，它看起來像你有你的VideoWriter對象爲MOV，但你傳遞字符串'mov'而不是對象mov來writeVideo。

% demo using random data and surface plot 

mov = VideoWriter('demo.avi'); 
mov.open; 

figure; 
for x = 1:10 
    data = rand(25,25); 
    surf(data); 

    renderer = get(gcf,'renderer'); 
    if strcmp(renderer,'painters') 
     renderer = 'opengl'; 
    end 
    frame = hardcopy(gcf, ['-d' renderer], ['-r' num2str(round(300))]); 

    writeVideo(mov, frame); 

end 

mov.close; 
mov.delete;