How to rewind in VideoReader?

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K E 2016-3-9

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/272386-how-to-rewind-in-videoreader

回答： Walter Roberson 2016-3-12

If I have read several frames in VideoReader, how can I rewind to the first frame? In this example, let's say I stop the replay after 5 frames (enter 0 when prompted at the 5th frame). After that I want to rewind to the 1st frame, for example if I want to display the first frame again. How do I rewind?

vidObj = VideoReader('xylophone.mp4'); % Make a video object of an example video on everyone's path
iStop = []; % Stop the frame display if this is not empty
while hasFrame(vidObj) & isempty(iStop) % Loop through all frames
    vidFrame = readFrame(vidObj);
    imagesc(vidFrame);
    iStop = input('0 to stop, return to continue   ');
end

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Walter Roberson 2016-3-10

在 MATLAB Online 中打开

   time_to_remember = vidObj.CurrentTime;
   .... do some things that read frames ...
   vidObj.CurrentTime = time_to_remember;  %position back to where we were

Image Analyst 2016-3-11

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采纳的回答

Walter Roberson 2016-3-12

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/272386-how-to-rewind-in-videoreader#answer_213319

在 MATLAB Online 中打开

   time_to_remember = vidObj.CurrentTime;
   .... do some things that read frames ...
   vidObj.CurrentTime = time_to_remember;  %position back to where we were