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How do I get my Desktop Automation to wait for a .bat or python script that takes ~ 10s to return before continuing?

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Posted on by heliox

I have a .bat script that is transcoding video using ffmpeg. This takes around 10 seconds. When I call one of the DOS, Powershell, Python script controls they all return instantly. What am I doing wrong? Building in specific Waits into the flow isn't trustworthy. Thanks.

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Power Automate Desktop

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tc_procare 20 on at

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I would try "Get Window" (for the script window) and then "Wait for Window Content" on the new script window, if you are able to implement a text out at the end of your script to show something unique like 'Exit Code 0' to act as a visual handshake for the flow to see.

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VJR 7,635 on at

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Hi @heliox

Multiple ways to achieve it. One of them is as below.

You can use Wait but in a different way.

Can you add an output to the .bat or python script such that it writes something to a text file after its work is done? Eg: "Process complete"

If so, then then after calling the script from PAD, you can add a loop such that it waits for every 5 or 10 secs to check if there is some text written in the text file. If not found then continue the loop. If found then the job is done. Need to add a counter for the "number of retry attempts" that the loop will continue else there are chances that it may go in an infinite loop.

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