How do I read video frames starting at an arbitrary frame number

2015 2 13
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更新时间：2015 2 13
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I am using MatLab 2014b 64 bit Windows. I have a .mov file with 13170 frames of 1080x 1920 pixels- way too big to read in all at once so I want to read the file in in chunks of 1000 frames each, but cannot find a way to start reading at a specified frame number. Are there parameters to set in VideoReader that does this?

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Image Analyst
Image Analyst 2015-2-13

0 个投票

You have to use read() and pass it the frame number.
% Extract the frame from the movie structure.
thisFrame = read(videoObject, frameNumber);
See my attached demo.

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Derrick Salmon
Derrick Salmon 2015-2-13

0 个投票

Thanks Image Analyst - looks like exactly what I needed
cheers
Derrick

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