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main44old.m
资源名称：MPEG-2(MATLAB).rar　[点击查看]
上传用户：cxsjwj
上传日期：2022-08-09
资源大小：34k
文件大小：4k
源码类别：

matlab例程

开发平台：

Matlab

main44old.m：源码内容
  3. clc
  4. tic
  6. aviobj = avifile('2.avi','fps',25,'COMPRESSION','None');
  7. %motion Vectors
  8. motionVect=zeros(2,256);
  9. fid=fopen('Qtable2.txt','r');
  10. %array is quantization matrix
  11. array=fscanf(fid,'%e',[8,inf]);
  12. %array=2*array;
  15. i = 0;
  16. %flag to tell if B frame was predicted from I or P frame flag=1 P frame
  17. %flag=0 I frame
  18. flag=2;
  19. %GOP is of 10 pictures IBBPBBPBBI
  20. mov=aviread('news.avi');
  21. movinfo=aviinfo('news.avi');
  22. noframe=movinfo.NumFrames;
  23. %mbSize macroblock size used for motion estimation
  24. mbSize = 8;
  25. %p for search area
  26. p = 7;
  29. global I1 I1d P4d P7d I10d B2d B3d B5d B6d B8d B9d 
  30. array=array;
  32. for i=85:10:95
  33.     i
  34.     framedata=aviread('news.avi',i);
  35.     I1=frame2im(framedata);
  36.     
  37.     if resize==1
  38.     I1=imresize(I1,[long,wide]);
  39.     end
  40.     
  41.     
  42.     I1=I1(:,:,1);
  43.     main441
  44.     layer1
  45.     
  46.     framedata=aviread('news.avi',i);
  47.     I1=frame2im(framedata);
  48.     if resize==1
  49.     I1=imresize(I1,[long,wide]);
  50.     end
  51.     
  52.     I1=I1(:,:,2);
  53.     main442
  54.     layer2
  55.     
  56.     framedata=aviread('news.avi',i);
  57.     I1=frame2im(framedata);
  58.     if resize==1
  59.     I1=imresize(I1,[long,wide]);
  60.     end
  61.     
  62.     I1=I1(:,:,3);
  63.     main443
  64.     layer3
  66. % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  70.         
  71.     
  73.         if i==1
  74.                 imshow(uint8(I1d1))
  75.                 aviobj = addframe(aviobj,getframe);
  76.                 clf;
  77.                 
  78.                 imshow(uint8(B2d1))
  79.                 aviobj = addframe(aviobj,getframe);
  80.                 clf;
  81.                 
  82.                 imshow(uint8(B3d1))
  83.                 aviobj = addframe(aviobj,getframe);
  84.                 clf;
  85.                 
  86.                 imshow(uint8(P4d1))
  87.                 aviobj = addframe(aviobj,getframe);
  88.                 clf;
  89.                 
  90.                 imshow(uint8(B5d1))
  91.                 aviobj = addframe(aviobj,getframe);
  92.                 clf;
  93.                 
  94.                 imshow(uint8(B6d1))
  95.                 aviobj = addframe(aviobj,getframe);
  96.                 clf;
  97.                 
  98.                 imshow(uint8(P7d1))
  99.                 aviobj = addframe(aviobj,getframe);
  100.                 clf;
  101.                 
  102.                 imshow(uint8(B8d1))
  103.                 aviobj = addframe(aviobj,getframe);
  104.                 clf;
  105.                 
  106.                 imshow(uint8(B9d1))
  107.                 aviobj = addframe(aviobj,getframe);
  108.                 clf;
  109.                 
  110.                 imshow(uint8(I10d1))
  111.                 aviobj = addframe(aviobj,getframe); 
  112.                 clf;
  113.             else
  115.                 
  116.                 imshow(uint8(B2d1))
  117.                 aviobj = addframe(aviobj,getframe);
  118.                 clf;
  119.                 
  120.                 imshow(uint8(B3d1))
  121.                 aviobj = addframe(aviobj,getframe);
  122.                 clf;
  123.                 
  124.                 imshow(uint8(P4d1))
  125.                 aviobj = addframe(aviobj,getframe);
  126.                 clf;
  127.                 
  128.                 imshow(uint8(B5d1))
  129.                 aviobj = addframe(aviobj,getframe);
  130.                 clf;
  131.                 
  132.                 imshow(uint8(B6d1))
  133.                 aviobj = addframe(aviobj,getframe);
  134.                 clf;
  135.                 
  136.                 imshow(uint8(P7d1))
  137.                 aviobj = addframe(aviobj,getframe);
  138.                 clf;
  139.                 
  140.                 imshow(uint8(B8d1))
  141.                 aviobj = addframe(aviobj,getframe);
  142.                 clf;
  143.                 
  144.                 imshow(uint8(B9d1))
  145.                 aviobj = addframe(aviobj,getframe);
  146.                 clf;
  147.                 
  148.                 imshow(uint8(I10d1))
  149.                 aviobj = addframe(aviobj,getframe);
  150.                 clf;
  151.         end
  153.             framedata=aviread('news.avi',i+9);
  154.             I10=frame2im(framedata);
  155.             %I10=imresize(I10,[128 128]);
  156.       
  157.             
  158.                       
  159.             
  161. end
  162. aviobj = close(aviobj);
  163. toc