divide the multiple frames

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ajith
ajith 2013-1-21
sir,
In the movie file consists the 498 frames i process the all frames for my project gone for out of memory so that i would like to process only the 7multiples of frames. my doubt is regards how to taken the all multiples of 7 frames in the loop format
i did
readerobj = mmreader('dec.wmv');
frame = read(readerobj,inf);
y=readerobj.NumberOfFrames;
for loop=1:y
loop=loop+7;
Image = read( readerobj,loop);
but its not taken the 7 multiples of frame how to resolve it

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回答（1 个）

Walter Roberson
Walter Roberson 2013-1-21
编辑：Walter Roberson 2013-1-21
for loop=1:7:y
Images = read( readerobj,[loop loop+6]);
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Walter Roberson
Walter Roberson 2013-1-28
Try
for loop = 480:498
fprintf('about to try frame %d\n', loop);
try
Images = read(readerobj, loop);
fprintf('got frame %d\n', loop);
catch ME
fprintf('problem on frame %d\n, loop);
end
end
and see how far it gets.
ajith
ajith 2013-1-29
Warning: Unable to determine the number of frames in this file.
about to try frame 480
got frame 480
upto 498 frames are processed sir but loop starts from 1 to 498 frames shows beyond the out of frames

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