How to rewind in VideoReader?

4 次查看（过去 30 天）
K E
K E 2016-3-9
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
Walter Roberson 2016-3-10
time_to_remember = vidObj.CurrentTime;
.... do some things that read frames ...
vidObj.CurrentTime = time_to_remember; %position back to where we were
Image Analyst
Image Analyst 2016-3-11
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采纳的回答

Walter Roberson
Walter Roberson 2016-3-12
time_to_remember = vidObj.CurrentTime;
.... do some things that read frames ...
vidObj.CurrentTime = time_to_remember; %position back to where we were

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