'getsnapshot' and 'error writing DiskLogger' problems

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Annie 2017-4-17

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/335801-getsnapshot-and-error-writing-disklogger-problems

Hello, I'm working with a video acquisition code, it was working fine but suddenly, when I tried to run it again, it shows me this error:

Error using imaqdevice/getsnapshot (line
65)
A timeout occurred during GETSNAPSHOT.
Error in CaptVid (line 16)
    I=getsnapshot(vid);

This is the code:

%Image Capture:
  clear all
  clc 
  close all
%Corresponding webcam:
vid=videoinput('winvideo',3);
set(vid,'FramesPerTrigger',15);
aviObject=avifile('VideoP_1.avi');
for iFrame=1:10 %Frames    
    sprintf('Frame %d',iFrame)
    I=getsnapshot(vid);
    F=im2frame(I);
    aviObject=addframe(aviObject,F);
end
sprintf('Cut')
aviObject=close(aviObject);

Also I have another code, trying to do the same but acquiring the video directly but it starts working fine, and then I open another file to analyze the video and then try to run again the video acquisition code and it sends me the "Error writing data to the DiskLogger file." error, this is the other code:

clear all;
close all;
clc;
vid=videoinput('winvideo',3);
set(vid,'FramesPerTrigger',50);
set(vid,'FrameGrabInterval',1);
start(vid);
wait(vid,Inf);
[frames, time]=getdata(vid,get(vid,'FramesAvailable'));
framerate=mean(1./diff(time));
capturetime=15;
interval=get(vid,'FrameGrabInterval');
numframes=floor(capturetime*framerate/interval);
set(vid,'LoggingMode','disk');
avi=avifile('VideoP.avi','fps',framerate);
set(vid,'DiskLogger',avi);
start(vid)
sprintf('Action!')
wait(vid,Inf);
avi=get(vid,'DiskLogger');
avi=close(avi);
delete(vid);
clear vid;