Running two scripts synchronously

Question

Yanjika O 2020-6-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/547521-running-two-scripts-synchronously

评论： Mohammad Sami 2020-6-13

Hi,

Is it possible to run two scripts at the same time? For example, generating video on the screen and recording a video through usb camera both starting from same time and finishes same time.

Thank you.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Mohammad Sami 2020-6-13

Does it matter if you record a few seconds of extra video before and after ? You can just setup and start your recording. Then generate the video. Finally stop the recording.

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Walter Roberson 2020-6-13

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/547521-running-two-scripts-synchronously#answer_450645

Yes? No?

Synchronizing events precisely turns out to be very hard. There are theoretical arguments to the effect that there are circumstances under which it is literally impossible, that "cause and effect" break down in some cases, and that somes it is not possible to definitely say whether one event occurs before or after another event.

That said... the less precise you need to be on the synchronization, the easier it gets. For example, you could probably synchronize two such scripts to within less than half an hour provided that you do not route the signal out past Jupiter and back. Realistic problems can start showing up at synchronizing to less than 20 seconds.

If you wanted to synchronize to less than one frame at (say) 20 frames per second, then you would probably have trouble doing that.